AU2022201983A1

AU2022201983A1 - Electrical protection device and electrical switchboard comprising such an electrical protection device

Info

Publication number: AU2022201983A1
Application number: AU2022201983A
Authority: AU
Inventors: Claude Burnot; Thomas Pupin
Original assignee: Schneider Electric Industries SAS
Current assignee: Schneider Electric Industries SAS
Priority date: 2021-03-26
Filing date: 2022-03-22
Publication date: 2022-10-13
Also published as: FR3121274B1; FR3121274A1; CN115132530A; EP4064316C0; EP4064316A1; EP4064316B1

Abstract

This electrical protection device (12) comprises: a housing, two conduction paths (60) that are electrically isolated from one another and distributed across the width (X30) of the housing, each conduction path individually comprising an input terminal (62), arranged at an upper end of the housing so as to be connected to a supply comb; an output terminal (64), arranged at a lower end of the housing; and a mobile contact (66), which is rotationally mobile with respect to the housing. The device also comprises a switching mechanism that is configured to switch the mobile contacts, a first tripping device and a switching lever. Each mobile contact is rotationally mobile with respect to the housing about a mobile contact axis (X66) that is parallel to the lever axis and the mobile contacts rotate in the same direction with respect to the housing and that the direction of rotation of the mobile contacts is opposite the direction of rotation of the switching lever. 3/12 FIG 3 cY) (%j 0 N 0 !0 o 8 OO ~4 I °om (==%41 w --j- - --

Description

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ELECTRICAL PROTECTION DEVICE AND ELECTRICAL SWITCHBOARD COMPRISING SUCH AN ELECTRICAL PROTECTION DEVICE

PRIORITY This application claims priority from French Patent Application n° FR 2103125 filed March 26, 2021. The entire content of this priority application is hereby incorporated by reference. TECHNICAL FIELD The present invention relates to an electrical protection device and to an electrical switchboard comprising such an electrical protection device.

BACKGROUND In the field of electrical installations, it is known to equip an electrical switchboard with an electrical protection device such as a circuit breaker. This protection device is generally mounted on a horizontal rail of the electrical switchboard. This device comprises input terminals, which are connected to a supply comb, and output terminals, which are connected to an electrical installation, which is thus protected by the protection device. EP-2 506 283-Al describes a device of this type, specifically a compact residual current circuit breaker with protection against overcurrents and against overloads. The circuit breaker comprises two conductive paths, with mobile contacts and fixed contacts. The fixed contacts are placed beneath the mobile contacts such that the circuit breaker is opened by the mobile contacts moving back up. As a result of this arrangement of the fixed contacts and the direction of movement of the mobile contacts, an arc extinguishing chamber and equipment for protecting against overloads and short circuits are placed in the lower part of the circuit breaker, and equipment for protecting against current leaks is arranged in the upper part of the circuit breaker, above the mobile contacts. This circuit breaker furthermore comprises, as standard, a lever that has to be toggled downwards in order to actuate the opening of the mobile contacts, and upwards in order to actuate the closure of the mobile contacts. In other words, the mobile contacts are pivoted in the same direction as the lever when they are actuated. There is a constant need to improve the compactness of this type of device and to seek to integrate more equipment inside its housing. For this type of device, the bulk of the upper part is limited by the requirement to position the input terminals such that they are able to be connected to a rigid electric supply comb belonging to the electrical switchboard. The position of the lower terminals is of less importance, since they are generally connected to the electrical installation by flexible conductors. It is therefore generally easier to modify the dimensions of the lower part of the housing. The invention aims in particular to obtain a novel electrical protection device which easily makes it possible to integrate an additional functional component within the housing.

SUMMARY One subject of the invention is an electrical protection device comprising: - a housing, by way of which the electrical protection device is configured so as to be

mounted on a rail belonging to an electrical switchboard, - two conductive paths that are electrically insulated from one another and distributed within the width of the housing, each conductive path individually comprising: o an input terminal, arranged at an upper end of the housing so as to be connected to a supply comb, belonging to the electrical switchboard; o an output terminal, arranged at a lower end of the housing; and o a mobile contact able to move in rotation with respect to the housing between a conducting position, in which the mobile contact electrically connects the input terminal to the output terminal of this conductive path, and an insulating position, in which the input terminal and the output terminal of said conductive path are electrically insulated from one another, - a switching mechanism that is configured so as to toggle between an armed

configuration, in which the switching mechanism puts the mobile contacts into the conducting position, and a tripped position, in which the mechanism puts the mobile contacts into the insulating position, - a first tripping device, which is arranged in the housing and which is

configured so as to toggle the switching mechanism to the tripped configuration under the effect of an electrical fault of a first type, - a switching lever: o able to move in rotation about a lever axis; o able to be actuated, by a user, between a closed position, for putting the switching mechanism into an armed position, and an open position, for putting the switching mechanism into a tripped configuration; and o able to be actuated, by the switching mechanism, from its closed position to its open position, when the switching mechanism is toggled to the tripped configuration under the effect of the first tripping device. According to the invention, each mobile contact is able to move in rotation with respect to the housing about a mobile contact axis parallel to the lever axis and, when the switching lever is pivoted from the closed position to the open position and the mobile contacts are pivoted from their conducting position to their insulating position, the mobile contacts rotate in the same direction with respect to the housing about their respective mobile contact axis and the direction of rotation of the mobile contacts is opposite the direction of rotation of the switching lever. One idea on which the invention is based is that of freeing up space between the mobile contacts and the output terminals. To this end, the invention proposes to reverse the direction of rotation of the mobile contacts with respect to the direction of rotation of the switching lever, thereby advantageously giving the possibility of placing the first tripping device between the input terminals and the mobile contacts. In this situation, a functional component, such as a second tripping device or a monitoring system, may advantageously be integrated between the output terminals and the mobile contacts. This functional component may advantageously be integrated regardless of its bulk, since it is easily possible to modify the dimensions of the area of the housing located between the mobile contacts and the output terminals so as to adapt to the functional component to be received. According to some advantageous but non-mandatory aspects of the invention, the electrical protection device incorporates one or more of the following features, either alone or in any technically permissible combination: - The switching mechanism comprises a stirrup, which is able to move in rotation about a stirrup axis parallel to the mobile contact axis, between an armed position, when the switching mechanism is in the armed configuration, and a tripped position, when the switching mechanism is in the tripped configuration, the stirrup being configured so as, when the stirrup is put into the armed position, to put the mobile contacts into the conducting position, and, when the stirrup is put into the tripped position, to put the mobile contacts into the insulating position. The stirrup and the mobile contacts pivot in opposing directions when the stirrup pivots from its armed position into its tripped position and the mobile contacts are pivoted from their conducting position into their insulating position. - The switching mechanism furthermore comprises a stirrup spring, which exerts a force on the stirrup, with respect to the housing, which tends to toggle the stirrup from its armed position into its tripped position, and a locking latch, able to move between a locked configuration, in which the locking latch slaves the rotation of the stirrup to the rotation of the switching lever, such that the lever drives the stirrup into the armed position when the lever is actuated into the closed position, and the lever releases the pivoting of the stirrup into the tripped position when the lever is actuated into the open position, and when the stirrup is in the armed position and when the switching lever is in the closed position, the stirrup and the lever hold one another in position; and a locked configuration, in which the locking latch allows the stirrup to toggle into the tripped position even if the lever is in the closed position, and the locking latch allows the switching lever to rotate into its open position when the switching mechanism toggles to the tripped configuration. - The switching lever furthermore comprises a lever spring, which exerts a force on the switching lever, with respect to the housing, which tends to toggle the lever from the closed position into the open position; the switching mechanism furthermore comprises a connecting rod, comprising a first end, which is linked to the lever and a second end, which is captured by the locking latch when the latch is in the locked configuration, such that, when the switching lever is in the closed position, the connecting rod holds the locking latch in the locked configuration and the switching lever in the closed position, by bearing on the lever by way of its first end and on the stirrup and the locking latch by way of its second end, and when the switching lever is actuated from its closed position into its open position, the lever drives the locking latch to the unlocked configuration by way of the connecting rod; and which is released by the locking latch when the latch is in the unlocked configuration, such that the connecting rod does not oppose the toggling of the lever into the open position and the stirrup into the tripped configuration. - The locking latch comprises a hook, able to pivot with respect to the stirrup about a hook axis parallel to the stirrup axis, and a bolt, able to pivot with respect to the stirrup about a bolt axis parallel to the stirrup axis. In the locked configuration, the bolt and the hook are in contact against one another so as to slave the rotation of the stirrup to the rotation of the switching lever, and in the unlocked configuration, the bolt and the hook are not in contact so as to release the rotation of the stirrup with respect to the rotation of the lever. - The switching mechanism furthermore comprises a latch spring, which exerts a force on the locking latch, with respect to the stirrup, which tends to toggle the latch to the locked configuration. - The stirrup spring is a torsion spring, comprising a first branch that bears against the housing; and a second branch that bears against the stirrup; and the stirrup is configured such that, when the stirrup is pivoted from the armed position into the tripped position, a distance between the stirrup axis and a straight line perpendicular to a contact surface between the second branch and the stirrup increases. - The switching mechanism furthermore comprises a rocker, which is able to pivot with respect to the housing between an initial position and a toggled position, such that the pivoting of the rocker from its initial position into its toggled position toggles the locking latch from its locked configuration to its unlocked configuration, and the first tripping device is configured so as to drive the rocker from the initial position to the toggled position, under the effect of an electrical fault of a first type. - The first tripping device is a magnetic tripping device, configured so as to toggle the switching mechanism to the tripped configuration when the electrical fault of the first type is a short circuit occurring between the output terminals, or a thermal tripping device that toggles the switching mechanism to the tripped configuration when the electrical fault of the first type is an overload occurring at the output terminals, or a magnetothermal tripping device which toggles the switching mechanism to the tripped configuration when the electrical fault of the first type is a short circuit occurring between the output terminals or an overload occurring at the output terminals. - The electrical protection device also comprises an arc extinguishing chamber and a functional component arranged in the housing, between the output terminals and the mobile contacts, the switching mechanism, the switching lever and the arc extinguishing chamber, the functional component being chosen from: a second tripping device configured so as to toggle the switching mechanism to the tripped configuration under the effect of an electrical fault of a second type, such as for example a differential tripping device configured so as to toggle the switching mechanism to the tripped configuration when the electrical fault of the second type is a differential current, a tripping device controlled by a communication system, or a tripping device configured so as to toggle the switching mechanism to the tripped configuration when the electrical fault of the second type is an electric arc occurring on an installation connected to the output terminals of the conductive paths; and a monitoring system. - The functional component is a second tripping device, the switching mechanism also comprises a drawer, the drawer being able to be actuated with respect to the housing between an armed position and a tripped position, in which the drawer toggles the switching mechanism to the tripped configuration, and the second tripping device is configured to actuate the drawer from the armed position to the tripped position under the effect of an electrical fault of the second type.

According to another aspect, the invention also relates to an electrical switchboard comprising a supply comb and a fastening rail arranged under the supply comb. According to the invention, the electrical switchboard comprises an electrical protection device as described above, the electrical protection device being fastened to the fastening rail, such that the lever axis is parallel to the fastening rail, the input terminals being electrically connected to the supply comb, connectors of the supply comb being plugged into the input terminals. This electrical switchboard brings about the same advantages as those mentioned above with respect to the electrical protection device of the invention.

DRAWINGS The invention will be better understood and other advantages thereof will become apparent in the light of the following description, disclosing some examples complying with the principle thereof, illustrated by the following appended drawings:

[FIG 1] Figure 1 is a perspective view of an electrical switchboard according to the invention, this electrical switchboard comprising multiple electrical protection devices according to the invention, all shown in a closed configuration.

[FIG 2] Figure 2 is a perspective view of an electrical protection device according to the invention, shown in a closed configuration.

[FIG 3] Figure 3 is a side view of the electrical protection device of Figure 2, from a first angle, shown in a closed configuration, in which part of a housing of the electrical protection device is masked.

[FIG 4] Figure 4 is a partial side view of the electrical protection device of Figures 2 and 3, along the detail IV of Figure 3.

[FIG 5] Figure 5 is a side view of the electrical protection device of Figures 2 to 4, from a second angle, shown in a closed configuration, in which part of the housing is masked.

[FIG 6] Figure 6 is a side view of the electrical protection device of Figures 2 to 5, from the first angle, shown in an open configuration, in which part of the housing is masked.

[FIG 7] Figure 7 is a side view of the electrical protection device of Figures 2 to 6, from the second angle, shown in an open configuration, in which part of the housing and part of an arc extinguishing chamber of the device are masked.

[FIG 8] Figure 8 is a side view of the electrical protection device of Figures 2 to 7, from the first angle, shown in a configuration of in the process of being opened, in which part of the housing is masked.

[FIG 9] Figure 9 is a side view of the electrical protection device of Figures 2 to 8, from the second angle, shown in a configuration of in the process of being opened, in which part of the housing and part of an arc extinguishing chamber of the device are masked.

[FIG 10] Figure 10 is a partial perspective view of the electrical protection device of Figures 2 to 9, shown in a closed configuration, in which part of the housing and part of a switching mechanism of the device are masked.

[FIG 11] Figure 11 is a side view, from the second angle, of part of the electrical protection device of preceding Figures 2 to 10, shown in a closed configuration.

[FIG 12] Figure 12 is a side view, from the second angle, of part of the electrical protection device of preceding Figures 2 to 10, shown in an open configuration.

DETAILED DESCRIPTION Figure 1 shows an electrical switchboard 10 according to the invention. The electrical switchboard 10 is configured so as to be integrated into an electrical installation, fitted for example in a building. In the example, the electrical switchboard 10 is in the form of a modular row. Advantageously, this modular row may be combined with other modular rows. The electrical switchboard 10 receives multiple electrical protection devices. The electrical switchboard 10 is modular, that is to say that it is equipped with a variable number of electrical protection devices, depending on the requirements of the electrical installation into which it is configured to be integrated, and that the electrical protection devices may be of various types. The example shown in Figure 1 shows electrical protection devices 12 of a first type and electrical protection devices 14 of a second type. The electrical switchboard 10 furthermore comprises a fastening rail 16 on which the electrical protection devices 12 and 14 are installed. The fastening rail 16 extends along a width axis X1O of the electrical switchboard 10. The electrical protection devices 12 and 14 are thus juxtaposed along the width axis X10. A depth axis Y1O and a height axis Z1O of the electrical switchboard 10 are also defined, these being perpendicular to one another and to the width axis X10. Preferably, when the electrical switchboard 10 is integrated into the electrical installation, the height axis Z1O is vertical and directed upwards. The electrical switchboard 10 furthermore comprises a supply comb 18 that extends along the width axis X1O, that is connected to all of the electrical protection devices 12 and 14 and that supplies electrical energy to the electrical protection devices by way of connectors 20. In practice, in the supply comb 18, the connectors 20 are distributed into multiple groups, all of the connectors of a group being electrically connected to one another and electrically insulated from the connectors of the other groups. In the example shown, the supply comb 18 comprises four groups of connectors 20. Preferably, out of the four groups of connectors 20, three are each connected to a supply phase of the electrical switchboard 10 and one is connected to a neutral conductor of the electrical switchboard. As a variant, the supply comb 18 comprises a different number of groups of connectors 20, for example two groups of connectors, respectively connected to a supply phase and to a neutral conductor. The supply comb 18 is arranged above the fastening rail 16, along the height axis Z10 of the electrical switchboard. Figures 2 to 12 show one of the electrical protection devices 12. The device 12 comprises a housing 30. A width direction X30, a depth direction Y30 and a height direction Z30 of the housing 30 are defined, these being perpendicular to one another and fixed with respect to the housing 30. The housing 30 constitutes an essentially closed and electrically insulating envelope. The housing 30 advantageously comprises a front 32 and a back 34, distributed in the depth direction Y30, with the front 32 in the direction Y30 with respect to the back 34. In order to be integrated into the electrical switchboard 10, the device 12 is advantageously designed to be fastened to the fastening rail 16 by way of the housing 30. For this purpose, the device 12 advantageously comprises, on the back 34, any appropriate fastening means, such as for example a snap-in clip 36, by way of which the device 12 is able to be fixedly attached to the rail 16. When the device 12 is fastened to the rail 16, the direction X30 is parallel to the rail 16 and to the axis X1O, the direction Y30 is parallel to the axis Y1O and the direction Z30 is parallel to the axis Z1O. Thus, in the configuration mounted on the electrical switchboard 10, the back 34 of the housing 30 of the electrical protection device 12 is directed towards the rail 16 and the front 32 is opposite the rail 16. The housing 30 advantageously comprises a lower end 38 and an upper end 40 that are distributed along the direction Z30, with the upper end 40 in the direction Z30 with respect to the lower end 38, the upper end 40 being arranged above the lower end 38 in the configuration with the device 12 mounted on the electrical switchboard 10. The housing 30 advantageously comprises a right-hand side 42 and a left-hand side 44, which are preferably planar and parallel, that are distributed along the direction X30, with the left-hand side 44 in the direction X30 with respect to the right-hand side, the left-hand side 44 being arranged to the left of the right-hand side 42 in the configuration with the device 12 mounted on the electrical switchboard 10. Preferably, the width of the device 12, measured in the direction X30 between the left hand side 44 and the right-hand side 42, is between 15 mm and 25 mm, more preferably equal to 18 mm. The front 32 and the back 34, along with the left-hand side 44 and right-hand side 42, connect the end 38 to the end 40 in the direction Z30. The front 32 and the back 34 each connect the right-hand side to the left-hand side in the direction X30. Each side connects the back 34 to the front 32 in the direction Y30. When two devices 12 are juxtaposed in the electrical switchboard 10 as shown in Figure 1, the left-hand side 44 of a first device 12 is against the right-hand side 42 of a second device 12. Preferably, the housing 30 comprises an internal partition 46 visible in Figures 3 to 10, which extends parallel to the directions Y30 and Z30 and separates an internal volume of the housing 30 into a right-hand compartment 48, visible in Figures 5, 7 and 9, and into a left hand compartment 50, visible in Figures 3, 4, 6, 8 and 10. The right-hand compartment 48 and left-hand compartment 50 are distributed along the direction X30. The right-hand compartment 48 is delimited by the partition 46 and the right-hand side 42 in the direction X30, by the ends 38 and 40 in the direction Z30, and by the front 32 and the back 34 in the direction Y30. The left-hand compartment 50 is delimited by the partition 46 and the left-hand side 44 in the direction X30, by the ends 38 and 40 in the direction Z30, and by the front 32 and the back 34 in the direction Y30. The electrical protection device 12 is a bipolar device in that it comprises two conductive paths. Provision is made for each conductive path to comprise an input terminal, an output terminal, a mobile contact and a fixed contact. Thus, a first conductive path 60 comprises an input terminal 62, an output terminal 64, a mobile contact 66 and a fixed contact 68, visible in Figures 3, 6 and 8, and a second conductive path 70 comprises an input terminal 72, an output terminal 74, a mobile contact 76 and a fixed contact 78, visible in Figures 5, 7 and 9. The conductive paths 60 and 70 are preferably electrically insulated from one another. For this purpose, each conductive path is preferably arranged fully in one of the respective compartments 48 or 50 of the housing 30. Here, the first conductive path 60 is arranged in the left-hand compartment 50 and the second conductive path 70 is arranged in the right-hand compartment 48. The internal partition 46 is interposed between the paths 60 and 70 so as to guarantee that they are electrically insulated from one another. The input terminals 62 and 72 are arranged at the upper end 40 of the housing 30, so as to be able to be electrically connected to the connectors 20 of the supply comb 18 belonging to the electrical switchboard. For example, the input terminal 62 is connected to a first connector 20 belonging to a first group of connectors of the supply comb 18, whereas the second input terminal 72 is connected to a second connector 20 belonging to a second group of connectors of the supply comb 18. In practice, to connect the input terminals 62 and 72 to the connectors 20, the connectors 20 are plugged into the input terminals. For this purpose, each input terminal 62 and 72 comprises a cavity 80, configured so as to receive a connector 20, and a screw 82, configured so as to clamp the connector 20 against the input terminal so as to establish electrical continuity between the connector and the input terminal. The device 12 is thus connected to the supply comb 18 simply by plugging the connectors 20 of the comb into the input terminals 62 and 72 and then by tightening the screws 82. In the example, the input terminals 62 and 72, along with the output terminals 64, 74, are screw terminals. As a variant, the input terminals 62, 72 and/or the output terminals 64, 74 are automatic terminals, also called plug-in terminals, or quick-connector terminals. Each conductive path constitutes a separate pole of the device 12. Preferably, the path constitutes a neutral pole, while the path 70 constitutes a phase pole. Thus, the path 60 is connected to a neutral conductor of the electrical switchboard by way of a connector 20, and the path 70 is connected to a supply phase of the electrical switchboard by way of a connector 20. In other words, each conductive path is intended to be brought to a separate potential. Preferably, the device 12 is designed to be used at a low voltage, that is to say a voltage between 100 V (volts) and 600 V, for example a voltage of 230 V. As a variant, the two conductive paths are phase conductive paths.

The output terminals 64 and 74 are preferably arranged at the lower end 38 of the housing 30, so as to be able to be electrically connected to an electrical circuit supplying power to receiving loads, for example, in the case of a building, household appliances or lights. These electrical loads are then supplied with the electrical energy provided to the input terminals 62 and 72 by the connectors 20 of the supply comb 18, through the device 12. As a variant, the input terminal 62 of the conductive path connected to a neutral conductor of the electrical switchboard is arranged at the lower end 38 of the housing 30, that is to say close to the output terminals 64 and 74, and the conductive path 60 forms a loop in the housing. Thus, in this variant, three terminals are arranged at the lower end 38 of the housing, and only the input terminal 72 is arranged at the upper end 40 of the housing. Advantageously, in such a variant, one of the three terminals is replaced by a plug-in clip, or by an electrical wire extending outside the housing 30. The fixed contact 68 is fixed with respect to the housing 30, and is electrically connected to the input terminal 62. The mobile contact 66 is electrically connected to the output terminal 64. The fixed contact 68 is arranged in the direction Z30 with respect to the mobile contact 66. As is visible in Figures 3, 6 and 8, the mobile contact 66 preferably comprises a conductive end 90, performing the function of an electrical contact, and which is electrically connected to the output terminal 64. The mobile contact 66 also comprises a contact carrier 92 that carries the end 90. The mobile contact 66 is able to pivot, with respect to the housing 30, by way of the contact carrier 92, about a mobile contact axis X66, parallel to the direction X30. This pivoting is performed between a conducting position, shown in Figures 3 and 8, and an insulating position, shown in Figure 6. In the conducting position of the mobile contact 66, the conductive end 90 is in electrical contact with the fixed contact 68, thereby electrically connecting the input terminal 62 to the output terminal 64. In the insulating position, the end 90 of the mobile contact 66 is spaced from the fixed contact 68, so as to be electrically insulated therefrom, thereby breaking the electrical connection between the terminals 62 and 64, such that the terminals 62 and 64 are electrically insulated from one another. The fixed contact 78 is fixed with respect to the housing 30, and is electrically connected to the input terminal 72. The mobile contact 76 is electrically connected to the output terminal 74. The fixed contact 78 is arranged in the direction Z30 with respect to the mobile contact 76.

As is visible in Figures 7 and 9, the mobile contact 76 preferably comprises a conductive end 94, performing the function of an electrical contact, and which is electrically connected to the output terminal 74. The mobile contact 76 also comprises a contact carrier 96 that carries the end 94. The mobile contact 76 is able to pivot, with respect to the housing 30, by way of the contact carrier 96, about a mobile contact axis. In the example, the respective mobile contact axes of the mobile contacts 66 and 76 are coincident, that is to say that the mobile contact 76 is able to pivot about the same axis as the mobile contact 66, in other words about the axis X66. As a variant, the mobile contact axes of the contacts 66 and 76 are parallel to one another, non-coincident and both parallel to the direction X30. This pivoting of the contact 76 is performed between a conducting position, shown in Figure 5, and an insulating position, shown in Figure 7. The mobile contacts 66 and 76 are advantageously able to pivot independently with respect to the housing. When they move from their respective conducting position to their respective insulating position, the mobile contacts 66 and 76 advantageously rotate in the same direction about their respective mobile contact axis, in the example about the axis X66. In particular, the contact ends 90 and 94 are then displaced opposite to the direction Z30, that is to say towards the output terminals 64 and 74, that is to say towards the lower end 38 of the housing 30. In the conducting position of the mobile contact 76, the conductive end 94 is in electrical contact with the fixed contact 78, thereby electrically connecting the input terminal 72 to the output terminal 74. In the insulating position, the end 94 of the mobile contact 76 is spaced from the fixed contact 78, so as to be electrically insulated therefrom, thereby breaking the electrical connection between the terminals 72 and 74, such that the terminals 72 and 74 are electrically insulated from one another. In Figure 9, the mobile contact 76 is shown in an intermediate position, that is to say that the conductive end 94 is remote from the fixed contact 78 but the mobile contact 76 is not in the insulating position. This position arises during toggling of the mobile contact 76 from its conducting position to its insulating position. The electrical protection device 12 comprises an arc extinguishing chamber 100, which is shown in full in Figure 5, and partially open in Figures 7 and 9, so as to show the content thereof. The arc extinguishing chamber 100 aims to give the device 12 an extinguishing capability by dissipating any electric arc that might occur when the mobile contact 76 moves from the conducting position to the insulating position, that is to say when it moves away from the fixed contact 78. In practice, when the mobile contact 76 changes from the conducting position to the insulating position, its conductive end 94 is located in the arc extinguishing chamber 100. The arc extinguishing chamber 100 is advantageously arranged in the right-hand compartment 48, between the fixed contact 78 of the input terminal 72, along the back 34 of the housing 30. The arc extinguishing chamber 100 comprises for example a stack of metal sheets 102, sometimes called fins or separators, superimposed at a distance from one another, here along the direction Y30, so as to extend and thus extinguish the potential electric arc. The arc extinguishing chamber 100 advantageously comprises insulating cheeks, not shown, between which the sheets 102 are arranged. The sheets 102 are for example held between the internal partition 46 and the right hand edge 42 of the housing 30. The input terminal 72 is interposed between the arc extinguishing chamber 100 and the upper end 40 of the housing. The fixed contact 78 is preferably extended by an arcing horn 104, curved in the direction of the stack of metal sheets 102 of the arc extinguishing chamber 100. The arc extinguishing chamber advantageously comprises an arcing horn 105, which is electrically connected to the conductive path 70, between the mobile contact 76 and the output terminal 74. The arcing horn 105 is arranged facing the arcing horn 104. Thus, when the mobile contact 76 is toggled to the insulating position, the potential electric arc is guided to the metal sheets 102 by way of the arcing horns 104 and 105, so as to be split and extinguished within the arc extinguishing chamber 100. The electrical protection device 12 furthermore comprises three tripping devices 110, 112 and 114, each configured so as to be excited by an electrical fault of a predetermined separate type and to toggle the mobile contacts 66 and 76 to the insulating position when they are excited. The tripping device 110, visible in Figures 5, 7 and 9, is configured so as to be excited by a short-circuit electrical fault that is for example liable to occur between the conductive paths 60 and 70 or between the conductive path 70 and ground. The tripping device 110 is therefore in particular excited by a short circuit that might occur downstream of the output terminals 64 and 74, on the electrical circuit supplied with power through the device 12, or on one of its loads. In this case, this is a phase-to-neutral or phase-to-ground short circuit. Here, the tripping device 110 is arranged in the right-hand compartment 48, and connected in series on the conductive path 70. In the direction Z30, the tripping device 110 is arranged between the input terminal 72 and the fixed contact 78. In the direction Y30, the tripping device 110 is arranged between the arc extinguishing chamber 100 and the front 32 of the housing 30. In the direction X30, the tripping device 110 is arranged between the right hand side 42 of the housing and the internal partition 46 of the housing. The tripping device 110 is sometimes called magnetic tripping device. In particular, the tripping device 110 is in the form of a magnetic actuator, which here comprises an electromagnetic winding 120 and a mobile core 122. The core 122 is visible only in Figure 9. The input terminal 72 is electrically connected to the fixed contact 78 by way of the tripping device 110, in particular the electromagnetic winding 120. When a short circuit occurs between the conductive paths 60 and 70, in particular downstream of the output terminals 64 and 74, the intensity of the current flowing in the winding 120 suddenly becomes very high, so as to generate enough electromagnetic force to displace the mobile core 122 from a rest position, shown in Figures 5 and 7, to a tripped position, shown in Figure 9, with respect to the housing 30. Here, the displacement of the core 122 from the rest position to the tripped position takes place in a direction opposite to the direction Z30, that is to say towards the lower end 38 of the housing. Once the fault has ended, the current flowing in the winding 120 is no longer high enough to hold the core 122 in the tripped position, such that the core 122 is advantageously returned to the rest position, for example by a spring belonging to the tripping device 110, not shown. When the core 122 is displaced into the tripped position, it drives the rotation of the mobile contacts 66 and 76 from their conducting position to their insulating position, thus interrupting the flow of an electric current between the input terminals 62 and 72 and the output terminals 64 and 74. In Figures 8 and 9, the electrical protection device 12 is shown in a configuration in which the tripping device 110 is in the process of being tripped, that is to say when the core 122 is in the tripped position. In these figures, the mobile contact 76 is no longer in the conducting position and has not yet reached the insulating position illustrated in Figure 7, and the mobile contact 66 has not yet left its conducting position. The tripping device 112, visible in Figures 5, 7 and 9, is configured so as to be excited by an electrical fault of another predetermined type, specifically an overload electrical fault that is for example liable to occur between the conductive paths 60 and 70. The tripping device 112 is therefore in particular excited by an overload that might occur downstream of the output terminals 64 and 74, on the electrical circuit supplied with power through the device 12, or on one of its loads. This type of fault may occur when one or more loads connected to this electrical circuit impose an excessively high current demand. Here, the tripping device 112 is arranged in the right-hand compartment 48, and connected in series on the conductive path 70. In the direction Z30, the tripping device 112 is arranged between the output terminal 74 and the mobile contact 76. In the direction Y30, the tripping device 112 is arranged between the back 34 and the front 32 of the housing 30. In the direction X30, the tripping device 112 is arranged between the right-hand side 42 of the housing and the internal partition 46 of the housing. The tripping device 112 is sometimes called thermal tripping device. In particular, the tripping device 112 is in the form of a thermal actuator, which is formed here by an electrically conductive and heat-deformable bimetal strip. The mobile contact 76 is electrically connected to the output terminal 74 by way of the tripping device 112, that is to say here via the bimetal strip. Preferably, a flexible braid 124 electrically connects the mobile contact 76 to the tripping device 112. When an overload occurs, in particular downstream of the output terminals 64 and 74, the strength of the current flowing in the bimetal strip forming the tripping device 112 raises the temperature of the bimetal strip until it is caused to deform. Once the fault has ended, the bimetal strip cools down and returns to its initial shape. The bimetal strip is therefore able to move between an initial position and a deformed position. When the bimetal strip is in the deformed position, it drives the rotation of the mobile contacts 66 and 76 from their conducting position to their insulating position, thus interrupting the flow of an electric current between the input terminals 62 and 72 and the output terminals 64 and 74. The tripping device 114 is configured so as to be excited by an electrical fault of another predetermined type, specifically a differential electrical fault that is for example liable to occur between the conductive path 70 and ground. The tripping device 114 is therefore in particular excited by a current leak to ground, which may occur downstream of the output terminals 64 and 74, thus causing a difference between the value of the strength of the current flowing within the conductive path 70 and the value of the strength of the current flowing in the opposite direction within the conductive path 60. Here, the tripping device 114 extends at the same time into the compartments 48 and , passing through the internal partition 46. In the direction Z30, the tripping device 114 is advantageously arranged between the output terminals 64 and 74, on the one hand, and the fixed contacts 68 and 78 and the mobile contacts 66 and 76, on the other hand.

The tripping device 114 is sometimes called differential tripping device. Preferably, the tripping device 114 comprises a differential sensor 126 that extends at the same time into the compartments 48 and 50, being arranged along the back 34 of the housing 30. As is visible in Figures 3, 6 and 8, the tripping device 114 preferably also comprises a relay 128 that extends only into the left-hand compartment 50, being arranged between the front 32 and the differential sensor 126. The differential sensor 126 comprises for example a ferromagnetic torus, carrying two electromagnetic windings, one formed by the conductive path 60 and the other formed by the conductive path 70. The electromagnetic winding of the conductive path 60 is advantageously formed by a part of the path 60 between the mobile contact 66 and the output terminal 64. The electromagnetic winding of the path 70 is advantageously formed by a part of the path 70 that connects the mobile contact 76 to the output terminal 74, more precisely by a part of the path between the tripping device 112 and the output terminal 74. For example, the mobile contact 66 and the winding of the differential sensor 126 of the conductive path 60 are electrically connected using a braid, not shown. When a current difference is established between the paths 60 and 70, beyond a certain threshold, an electromagnetic field is generated in the torus of the differential sensor 126. The relay 128 is configured so as to be actuated when this threshold is crossed, this having the effect of actuating the displacement of a mobile rod 130 belonging to the relay 128, from a rest position, shown in Figures 3, 6 and 8, to a tripped position, not visible in the figures, with respect to the housing 30. Here, the displacement of the mobile rod 130 from the rest position to the tripped position takes place in the direction Z30, that is to say towards the upper end 40 of the housing 30. Once the mobile rod 130 has reached the tripped position, it should be returned to the rest position so as to rearm the relay 128 and thus allow the relay 128 to actuate the rod 130 again in the event of a differential fault, as explained below. When the mobile rod 130 is displaced from its rest position to its tripped position, it drives the rotation of the mobile contacts 66 and 76 from their conducting position to their insulating position, thus interrupting the flow of an electric current between the input terminals 62 and 72 and the output terminals 64 and 74. The electrical protection device 12 also comprises a switching mechanism 150. The switching mechanism 150 is housed in the housing 30, partially in the compartment 48 and in the compartment 50. The switching mechanism 150 is configured so as to toggle between an armed configuration, shown in Figures 3 to 5 and 10, in which the mechanism 150 puts the two mobile contacts 66 and 76 into the conducting position, and a tripped configuration, shown in Figures 6 and 7, in which the switching mechanism 150 puts the mobile contacts 66 and 76 into the insulating position. In the present example, the switching mechanism 150 comprises a stirrup 152, visible in Figures 3 to 10. The stirrup 152 is able to pivot with respect to the housing 30 about a stirrup axis X152, parallel to the mobile contact axis X66. The stirrup extends at the same time into the compartments 48 and 50, being carried by the internal partition 46, straddling the latter. When the mechanism 150 is in the armed configuration, the stirrup 152 is in a first orientation, called "armed position", with respect to the housing 30, about the axis X152. When the mechanism 150 is in the tripped configuration, the stirrup 152 is in a second orientation, called "tripped position", about the axis X152. The mechanism 150 actuates the mobile contacts 66 and 76 by way of the stirrup 152. In practice, the stirrup 152 comprises a plate 154, arranged in the left-hand compartment 50, and a mating plate 156, arranged in the right-hand compartment 48. The plate 154 and the mating plate 156 are thus arranged on either side of the internal partition 46 and are able to pivot about the stirrup axis X152. In addition, the plate 154 and the mating plate 156 are fixedly connected by a link shaft 158, such that any rotational movement of the plate 154 about the stirrup axis X152 leads to an identical rotational movement of the mating plate 156 about the stirrup axis X152, and vice versa. As shown in Figures 3, 4, 6, 8 and 10, the plate 154 of the stirrup 152 comprises for example a cam 160, arranged in the left-hand compartment 50, by way of which the stirrup 152 drives the mobile contact 66 of the first conductive path 60 from the conducting position to the insulating position when the stirrup 152 is pivoted from the armed position to the tripped position. To drive the mobile contact 66 in rotation in this direction, the cam 160 bears against the contact carrier 92 of the mobile contact 66. The switching mechanism 150 advantageously comprises a spring 162, called "contact spring", that is arranged in the left-hand compartment 50 bearing both on the plate 154 of the stirrup 152 and on the mobile contact 66, more precisely on the contact carrier 92. Thus, when the stirrup 152 is pivoted from the tripped position to the armed position, the stirrup 152 drives the contact 66 from the insulating position to the conducting position by way of the spring 162. Provision is made for the spring 162 to apply a force to the contact 66, by bearing on the plate 154, preferably on the cam 160, which tends to press the mobile contact 66 against the fixed contact 68, when the stirrup 152 is in the armed position. This force makes it possible to ensure satisfactory contact pressure between the mobile contact 66 and the fixed contact 68. As shown in Figures 5, 7 and 9, the mating plate 156 of the stirrup 152 comprises for example a cam 164, arranged in the right-hand compartment 48, by way of which the stirrup 152 drives the mobile contact 76 of the second conductive path 70 from the conducting position to the insulating position when the stirrup 152 is pivoted from the armed position to the tripped position. To drive the mobile contact 76 in rotation in this direction, the cam 164 bears against the contact carrier 96 of the mobile contact 76. The switching mechanism 150 advantageously comprises a spring 166, called "contact spring", that is arranged in the right-hand compartment 48 bearing both on the mating plate 156 of the stirrup 152 and on the mobile contact 76, more precisely on the contact carrier 96. Thus, when the stirrup 152 is pivoted from the tripped position to the armed position, the stirrup 152 drives the contact 76 from the insulating position to the conducting position by way of the spring 166. Provision is made for the contact spring 166 to apply a force to the contact 76, by bearing on the mating plate 156, preferably on the cam 164, which tends to press the mobile contact 76 against the fixed contact 78, when the stirrup 152 is in the armed position. This force makes it possible to ensure satisfactory contact pressure between the mobile contact 76 and the fixed contact 78. For example, the contact springs 162 and 166 are torsion springs, mounted respectively on the mobile contact 66 and on the mobile contact 76, and a first branch of which bears respectively on the mobile contact 66 and on the mobile contact 76 and a second branch of which bears respectively on the cam 160 and on the cam 164. It will be understood that the cams 160 and 164 and that the contact springs 162 and 166 transmit a rotational movement of the stirrup 152 into a rotational movement of the mobile contacts 66 and 76, and that the direction of rotation of the mobile contacts 66 and 76 is opposite to the direction of rotation of the stirrup 152. For example, when the stirrup toggles from the armed position to the tripped position, it rotates clockwise, at the angle in Figures 3 and 4, and drives the mobile contacts 66 and 76 in rotation anticlockwise, at the angle in Figures 3 and 4. The switching mechanism 150 furthermore comprises a spring 170, called "stirrup spring", visible in Figures 3, 4, 6, 8, 10, 11 and 12 and shown just with the plate 154 in Figures 11 and 12. The stirrup spring 170 is arranged here in the left-hand compartment 50 of the housing 30.

The stirrup spring 170 applies a force to the plate 154 of the stirrup 152, by bearing on the housing 30, which tends to displace the stirrup 152 from the armed position to the tripped position. In the example shown, the stirrup spring 170 is a torsion spring, mounted on the internal partition 46, a first branch 172 of which bears against the housing 30 and a second branch 174 of which bears against an end stop 176 of the plate 154. Thus, the first branch 172 exerts a force F on the housing 30 and the second branch 174 exerts a force on the end stop 176 of the plate. The force F exerted by the stirrup spring 170 on the end stop 176 generates a moment M on the plate 154 that drives the rotation thereof about the stirrup axis X152 through a lever arm phenomenon. In practice, the force F exerted by the second branch 174 on the end stop 176 is directed in a straight line, denoted D176, that is perpendicular to the contact surface between the second branch and the end stop and that is located in a plane perpendicular to the direction X152. Furthermore, the position of the contact surface moves in this plane, during the rotation of the stirrup from the armed position to the tripped position, such that the orientation of the straight line D176 changes during the rotation of the stirrup. The intensity of the moment M generated by the stirrup spring 170 on the plate 154 depends firstly on the strength of the force F exerted by the second branch 174 on the end stop 176 and secondly on the distance between the stirrup axis X152 and the straight line D176, denoted D and measured along an axis perpendicular to the straight line D176 and passing through the stirrup axis X152. Specifically, the greater this distance D, the larger the lever arm generating the moment M from the force F, since the moment M is equal to the product of force F by distance D. The stirrup 152 is configured so that, when the stirrup 152 is pivoted from the armed position to the tripped position, the distance D increases, that is to say that the intensity of the moment M increases. The decrease in the strength of the force F when the stirrup spring 170 relaxes is negligible in comparison with the increase in the distance D, which is relatively large. As a result, the intensity of the moment M increases. The increase in the moment M driving the pivoting of the stirrup 152 is advantageous, since it makes it possible to increase the toggling speed of the mobile contacts 66 and 76 between their conducting position and their insulating position.

The electrical protection device 12 also comprises a switching lever 190. The switching lever 190 is able to pivot, with respect to the housing 30, about a lever axis X190, parallel to the axis X30, between a closed position, shown in Figures 3 to 5 and 8 to 10, and an open position, shown in Figures 6 and 7. The switching lever 190 here comprises a base 192, by way of which the lever is attached to the housing 30 so as to be able to pivot. The base 192 is arranged through an opening belonging to the front 32, while closing off this opening. The switching lever 190 is thus carried by the front 32. In the direction of the axis X190, the base 192 advantageously extends on either side of the internal partition 46. In other words, the lever 190 is advantageously centred in the direction X30, on the front 32. The switching lever 190 comprises a crank pin 194, carried by the base 192, and by way of which a user is able to actuate the lever 190 in rotation. To be accessible to the user, the crank pin 194 is arranged outside the housing 30. The switching mechanism 150 advantageously comprises a spring 196, called "lever spring", visible in Figures 3, 4, 6, 8 and 10. The lever spring 196 applies a force to the lever 190 by bearing on the housing 30, which tends to return the lever from the closed position to the open position. For example, the lever spring 196 is a torsion spring, housed inside the base 192 about the lever axis X190, and one branch of which bears on the lever 190 and another branch of which bears on the internal partition 46. The switching mechanism 150 advantageously comprises a connecting rod 200, visible in Figures 3, 4, 6, 8 and 10. The connecting rod 200 is for example arranged in the left-hand compartment 50. The connecting rod 200 comprises a first end 202 attached to the lever 190, in particular to the base 192. By way of this first end 202, the connecting rod 200 is able to pivot with respect to the lever 190 about an axis that is parallel and non-coincident with the lever axis X190. The rotation of the lever 190 is thus linked to a crank movement of the first end 202 of the connecting rod 200. In practice, during the rotation of the lever 190, the first end 202 of the connecting rod 200 describes a circular arc centred on the lever axis X190. The connecting rod 200 comprises a second end 204, opposite the first end 202, which interacts in particular with the stirrup 152, as described below. The second end 204 is guided in a channel 206 formed in the plate 154, that is to say in a plane parallel to the directions Y30 and Z30. The switching mechanism 150 advantageously comprises a locking latch 210, visible in Figures 3, 4, 6, 8 and 10. At least part of the locking latch 210 is arranged in the same compartment as that of the connecting rod 200, so as to interact therewith, here the left-hand compartment 50. At least part of the locking latch 210 extends into the one or more compartments housing the tripping devices 110, 112 and 114, so as to interact mechanically therewith, here the compartments 48 and 50. The latch 210 is advantageously carried by the stirrup 152. The latch 210 moves between a locked configuration, shown in Figures 3 to 5 and 10, and an unlocked configuration, shown in Figures 6 to 9. As explained below, each tripping device 110, 112 and 114 is configured so as to toggle the locking latch 210 from the locked configuration to the unlocked configuration, directly or indirectly, when said tripping device 110, 112 or 114 in question detects an electrical fault of the type predetermined for this tripping device. In the present example, the latch 210 comprises a bolt 212 and a hook 214 that interact with one another. The hook 214 extends here at the same time into the compartments 48 and 50, so as to be visible in Figures 3 to 10. In practice, provision is made for the hook 214 to extend at the same time into the one or more compartments receiving the tripping devices so as to be actuated thereby. The hook 214 also extends into the compartment where the bolt 212 is located in order to interact therewith. The hook 214 is carried by the stirrup 152, while being able to pivot with respect to the stirrup 152 about an axis X214, called "hook axis", here parallel and non-coincident with the stirrup axis X152. This pivoting is brought about when the latch 210 moves between the locked and unlocked configurations. In the present example, the hook 214 comprises a first part 216, arranged in the same compartment as the bolt 212, and a second part 218, arranged in the other compartment. The first part 216 and second part 218 are fixedly connected to one another, preferably by being recessed into one another, such that any movement of the first part 216 leads to an identical movement of the second part 218, and vice versa. Here, the bolt 212 extends into the left-hand compartment 50, so as to be visible in Figures 3, 4, 6, 8 and 10. In practice, provision is made for the bolt 212 to extend into the same compartment as that of the connecting rod 200 so as to interact therewith. The bolt 212 is carried by the stirrup 152, while being able to pivot with respect to the stirrup 152 about an axis X212, called "bolt axis", here parallel and non-coincident with the axis X152. In the example, the bolt axis X212 is carried by the link shaft 158 that connects the plate 154 to the mating plate 156. In addition, a through hole 213 is formed in the bolt 212.

In the locked configuration, the hook 214 is in an orientation called "holding orientation", in which the hook 214 holds the bolt 212 in an orientation called "capture orientation". For this purpose, the first part 216 of the hook 214 comprises for example a radial arm 220 against which the bolt 212 rotationally abuts. In the unlocked configuration, the hook 214 is in an orientation called "unhooked orientation", in which the hook 214 allows the bolt 212 to be pivoted with respect to the stirrup 152. In the present example, at the angle of Figure 3, the hook 214 pivots clockwise so as to change from the holding orientation to the unhooked orientation. When the hook 214 is displaced from the unhooked orientation to the holding orientation, it returns and holds the bolt 212 in the capture orientation. In other words, in the locked configuration of the locking latch 210, the hook 214 and the bolt 212 are in contact, such that the bolt 212 is prevented from rotating about the bolt axis X212 by the hook 214, while in the unlocked configuration, the hook 214 and the bolt 212 are not in contact, such that the bolt 212 is not prevented from pivoting about the bolt axis X212 by the hook 214. The switching mechanism 150 advantageously comprises a spring 222, called "latch spring", visible in Figures 5, 7 and 9. Here, the latch spring 222 is provided in the right-hand compartment 48. The spring 222 applies a force to the locking latch 210, by bearing on the mating plate 156 of the stirrup 152, which tends to return the locking latch 210 from the unlocked configuration to the locked configuration. For example, the spring 222 is a torsion spring, one branch of which bears on the mating plate 156 and another branch of which bears on the second part 218 of the hook 214, such that the spring 222 actuates the latch 210 by way of the hook 214. The latch spring 222 tends to return the hook 214 from the unhooked orientation to the holding orientation. The second end 204 of the connecting rod 200 is captured by the locking latch 210, in particular by the bolt 212, when the latch 210 is in the locked configuration, here when the bolt 212 is in the capture orientation. Specifically, the second end 204 of the connecting rod is arranged in the through hole 213 of the bolt 212. Then, by way of the latch 210, the second end 204 is attached to the stirrup 152 while being able to pivot with respect to said stirrup 152. In practice, when the latch 210 is in the locked configuration, the second end 204 of the connecting rod 200 is clamped between the walls of the channel 206 in the plate 154 and the walls of the through hole 213 of the bolt 212 then cannot move with respect to the plate 154 of the stirrup 152 or with respect to the bolt 212.

When the latch 210 is in the unlocked configuration, the second end 204 of the connecting rod 200 is free to move in the channel 206 in the plate 154, and this displacement leads to a rotation of the bolt 212 about the bolt axis X212. In the locked configuration of the latch 210, the position of the switching lever 190 is subject to the position of the stirrup 152, and therefore to the position of the mobile contacts 66 and 76, by way of the connecting rod 200 and the locking latch 210. In this situation, when the switching lever 190 is actuated from the open position to the closed position by a user, the stirrup 152 is put into the armed position, by way of the connecting rod 200, the second end 204 of which is captured by the latch 210 so as to drive the stirrup 152. Since the stirrup 152 is put into the armed position, it puts the mobile contacts 66 and 76 into the conducting position, by way of the contact springs 162 and 166. In the locked configuration of the latch 210, when the switching lever 190 is put into the open position by a user, the stirrup 152 is put into the tripped position, by way of the connecting rod 200, the second end 204 of which is captured by the locking latch 210 so as to drive the stirrup 152. Since the stirrup is put into the tripped position, it puts the contacts 66 and 76 into the insulating position, by way of the cams 160 and 164 of the plate 154 and of the mating plate 156. When the locking latch 210 is in the locked configuration, the stirrup 152 is in the armed position and the switching lever 190 is in the closed position, the stirrup 152 and the switching lever 190 hold one another in position, counter to the stirrup spring 170, tending to displace the stirrup 152 to the tripped position, and to the lever spring 196, tending to displace the switching lever 190 to the open position. In order thus to obtain mutual holding of the stirrup 152 and of the switching lever 190, provision is made, when the locking latch 210 is in the locked configuration, the stirrup 152 is in the armed position and the lever 190 is in the closed position, for the connecting rod 200 to then be in a locking orientation, shown in Figures 3 and 4, in which the stirrup 152 tends to hold the lever 190 in the closed position under the action of the stirrup spring 170, the stirrup 152 itself then being held in the armed position by the switching lever 190 via the connecting rod 200. In the present example, the connecting rod 200 is in the locking orientation when the first end 202 is positioned in a direction opposite the direction Y30 with respect to a straight line, parallel to the directions Y30 and Z30 and passing through the lever axis X190 and the second end 204.

Specifically, the rotation of the switching lever 190 from the closed position to the open position leads to a movement of the first end 202, in a plane parallel to the directions Y30 and Z30, which describes a circular arc centred on the lever axis X190. This circular arc movement leads to a displacement of the first end 202 in the direction opposite the direction Z30, that is to say towards the lower end 38 of the housing, as long as the connecting rod 200 is in the locking orientation, and then to a displacement of the first end 202 in the direction Z30 when the connecting rod 200 is no longer in the locking orientation, that is to say when the first end is positioned in the direction Y30 with respect to a straight line, parallel to the directions Y30 and Z30 and passing through the lever axis X190 and the second end 204. Now, the displacement of the first end 202 in the direction opposite the direction Z30 leads to a displacement of the second end 204 in the same direction. The second end 204 thus exerts a force on the walls of the channel 206 in the plate 154 and a force on the walls of the through hole 213 of the bolt 212. This force on the bolt 212 tends to rotate the bolt 212 clockwise about the bolt axis X212, at the angle of Figures 3 and 4, thereby tending to hold the locking latch 210 in the locked configuration. Thus, as long as the switching lever 190 is in the closed position, the connecting rod 200 holds the locking latch 210 in the locked configuration. In addition, this force on the plate 154 tends to rotate the stirrup 152 anticlockwise, at the angle of Figures 3 and 4, but this rotation is prevented by the stirrup spring 170, which exerts a greater force on the plate 154, tending to rotate the stirrup 152 clockwise. The bolt 212 and the stirrup 152 are then prevented from rotating, thereby preventing the second end 204 from being displaced in the direction opposite the direction Z30 and thereby preventing the first end 202 from being displaced. Thus, as long as the latch 210 is in the locked configuration and the connecting rod 200 is in the locking orientation, the switching lever 190 is prevented from rotating. Likewise, due to the position of the second end 204 with respect to the stirrup axis X152, the rotation of the stirrup 152 from the armed position to the tripped position leads to a displacement of the ends 202 and 204 of the connecting rod 200 in the direction Z30. Now, when the connecting rod 200 is in the locking orientation, given the position of the first end 202 with respect to the lever axis X190, a movement of the first end 202 in the direction Z30 leads to a clockwise rotation of the switching lever 190, at the angle of Figures 3 and 4, thereby tending to hold the lever in the closed position. The displacement of the first end 202 is then prevented, thereby preventing the stirrup 152 from rotating from the armed opposition to the tripped position.

Thus, as long as the latch 210 is in the locked configuration and the connecting rod 200 is in the locking orientation, the stirrup 152 is prevented from rotating. In summary, when the latch 210 is in the locked configuration and the connecting rod 200 is in the locking orientation, the switching lever 190 and the stirrup 152 hold one another in the closed position and in the armed position by way of the connecting rod 200. When the user actuates pivoting of the switching lever 190 towards the open position, the connecting rod is displaced first in the direction opposite the direction Z30, as described above, and the actuation force provided by the user leads to the exertion of a force on the plate 154 that is sufficient to drive the anticlockwise rotation of the stirrup 152, at the angle of Figures 3 and 4, counter to the force exerted by the stirrup spring 170. Thus, by virtue of the actuation force of the user, the connecting rod 200 is displaced from its locking orientation until the first end 202 is positioned in the direction Y30 with respect to the straight line, parallel to the directions Y30 and Z30, which passes through the lever axis X190 and the second end 204. When the first end 202 is located on this straight line, and when the first end 202 is arranged in the direction Y30 with respect to said straight line, the connecting rod 200 is no longer in the locking orientation, such that it is no longer ensured that the stirrup 152 and the switching lever 190 hold one another in position. Then, under the effect of the stirrup spring 170, the stirrup 152 is displaced to the tripped position and, under the effect of the lever spring 196, the switching lever 190 is returned to the open position. When the stirrup 152 is in the tripped position and the lever 190 is in the open position, they are held in these positions by the stirrup spring 170 and lever spring 196. Thus, when the switching lever 190 is actuated by a user towards the open position, the locking latch releases the stirrup 152 such that the stirrup toggles to the tripped position. In summary, when the locking latch 210 is in the locked configuration and the switching lever 190 is in the closed position, the lever 190 puts the switching mechanism 150 into the armed configuration. When the locking latch 210 is in the locked configuration and the lever 190 is in the open position, the lever 190 puts the switching mechanism 150 into the tripped configuration. It will furthermore be understood that the direction of rotation of the switching lever 190 is identical to the direction of rotation of the stirrup 152. For example, when the switching lever 190 is actuated towards the open position, that is to say the lever rotates clockwise about the lever axis X190, at the angle of Figures 3 and 4, then the stirrup is toggled to the tripped position by rotating clockwise about the stirrup axis X152, at the angle of Figures 3 and 4.

Each tripping device 110, 112 and 114 is individually configured so as to trip the switching mechanism 150 being put into the tripped configuration, while the switching mechanism 150 was in the armed configuration, when said tripping device 110, 112 or 114 is excited by the electrical fault of the type predetermined for this tripping device 110, 112 or 114. This leads to the mobile contacts 66 and 76 being put into the insulating position by the switching mechanism 150 when the electrical fault occurs. For this purpose, each tripping device 110, 112 and 114 is designed to trip toggling of the locking latch 210 from the locked configuration to the unlocked configuration. When the locking latch 210 is in the locked configuration while the stirrup 152 is in the armed position and the switching lever 190 is in the closed position, the second end 204 of the connecting rod 200 is free to move in the channel 206 in the plate 154 of the stirrup 152. Specifically, when the locking latch 210 is in the unlocked configuration, the bolt 212 is free to rotate about the bolt axis X212 and the second end is no longer clamped between the channel 206 and the through hole 213 of the bolt 212. Here, the channel 206 in the plate 154 forms a circular path along which the second end 204 of the connecting rod 200 is allowed to move. Thus released, the connecting rod 200 no longer holds the stirrup 152 and the switching lever 190 in position with one another. The lever 190 is then returned to the open position under the action of the lever spring 196 and the stirrup 152 is returned to the tripped position under the action of the stirrup spring 170, the stirrup 152 then driving the mobile contacts 66 and 76 into the insulating position. More generally, provision is made for the switching mechanism 150, in particular the lever spring 196, to return the switching lever 190 to the open position when the switching mechanism 150 is put into the tripped configuration, whether this be through the action of the user on the switching lever 190 itself or under the action of tripping performed by one of the tripping devices 110, 112 or 114. To change the locking latch 210 from the locked configuration to the unlocked configuration, the magnetic tripping device 110 actuates for example a rocker 240 belonging to the switching mechanism 150, the rocker 240 driving the hook 214 to the unhooked position. The rocker 240 is visible in Figures 5, 7 and 9. Here, the rocker 240 is attached to the housing 30, for example to the internal partition 46, while being able to pivot with respect to the housing 30 about a rocker axis X240 parallel to the stirrup axis X152, between an initial position, shown in Figures 5 and 7, and a toggled position, shown in Figure 9.

The magnetic tripping device 110 drives the rocker 240 from the initial position to the toggled position by displacing the mobile core 122, which bears against a first end 242 of the rocker 240, here in a direction opposite the direction Z30. The rocker 240 has a second end 244, which bears against a limb 246 belonging to the second part 218 of the hook 214, in the direction Z30, such that the hook 214 pivots to the unhooked orientation under the action of the pivoting of the rocker 240 to the toggled position, counter to the force of the latch spring 222. Once the electrical fault has ended, the mobile core 122 returns to its initial position, and allows the rocker 240 to be returned to the initial position, the rocker 240 thus allowing the hook 214 to be returned to the holding orientation. Under the action of the latch spring 222, the rocker 240 is then returned to the initial position by way of the limb 246 of the second part 218 of the hook 214, while the hook 214 is itself returned to the holding orientation by the latch spring 222. Furthermore, to allow faster toggling of the mobile contact 76 from its conducting position to its insulating position, when the mobile core 122 is displaced from its rest position to its tripped position, it also impacts the contact carrier 96 of the mobile contact 76. Thus, under the effect of the impact of the mobile core 122, the mobile contact 76 is displaced directly to the insulating position, without awaiting pivoting of the stirrup 152. In practice, the toggling of the mobile contact 76 to the insulating position is faster than the toggling of the locking latch 210 to the unlocked position and than the toggling of the stirrup 152 to the tripped position, such that, when the stirrup toggles to the tripped position, it drives only the toggling of the mobile contact 66 to the insulating position, and furthermore makes it possible to hold the mobile contact 76 in the insulating position, due to the action of the cam 164. This fast toggling of the mobile contact 76 is illustrated in Figures 8 and 9, in which the electrical protection device 12 is illustrated at two different angles in the same step of tripping the magnetic tripping device 110. Specifically, Figure 8 shows that the mobile contact 66 is in contact with the fixed contact 68, while Figure 9 shows that the mobile contact 76 is not in contact with the fixed contact 78. To change the locking latch 210 from the locked configuration to the unlocked configuration, provision may be made for the thermal tripping device 112 also to actuate the rocker 240 from the initial position to the toggled position, here by way of a tie rod 250, belonging to the switching mechanism 150. In the example, the tie rod 250 comprises a first end fastened to the bimetal strip forming the tripping device 112 and guided in translation into a pocket 252 formed in the internal partition 46 of the housing 30 and a second end fastened to the first end 242 of the rocker 240. The deformation of the bimetal strip under the effect of an electrical fault thus leads to the tie rod 250 being displaced in a direction opposite the direction Z30, such that the rocker 240 is driven from the initial position to the toggled position, as when the mobile core 122 of the magnetic tripping device 120 bears on the first end 242 of the rocker 240. To change the locking latch 210 from the locked configuration to the unlocked configuration, the differential tripping device 114 actuates for example a mechanical force amplifier 260, which is visible in Figures 3, 4, 6 and 8, by way of the mobile rod 130. The amplifier 260 comprises for example a drawer 262, a bolt 264, a drawer spring 266, a bolt spring 268 and a rearming leg 270. The drawer 262 slides, with respect to the housing 30, between an armed position, in which the drawer 262 allows the locking latch 210 to be in the locked configuration, and a tripped position, in which the drawer 262 puts the latch 210 into the unlocked configuration. For this purpose, the drawer 262 for example bears against a limb 272 belonging to the first part 216 of the hook 214, when the drawer 262 is displaced from the armed position to the tripped position, thereby driving the hook 214 from the holding orientation to the unhooked orientation. The drawer spring 266 applies a force to the drawer 262, which tends to displace the drawer from the armed position to the tripped position. When the mobile contact 66 moves from the conducting position to the insulating position, the mobile contact 66 returns the drawer 262 to the armed position, counter to the force of the drawer spring 266, by bearing against the drawer 262. The bolt 264 is carried by the internal partition 46. The bolt 264 is able to pivot between a locked position, shown in Figures 3, 4, 6 and 8, in which the bolt 264 holds the drawer 262 in the armed position, counter to the action of the drawer spring 266, and an unlocked position, not visible in the figures, in which the bolt 264 allows the drawer 262 to be displaced from the armed position to the tripped position by the drawer spring 266, and to be returned from the tripped position to the armed position by the mobile contact 66. The bolt spring 268 exerts a force on the bolt 264, by bearing on the internal partition 46 of the housing 30, which tends to return the bolt 264 from the unlocked position to the locked position. The rearming leg 270 is carried by the housing 30, in particular by the internal partition 46, and extends between the bolt 264 and the mobile rod 130 of the tripping device 114. When a differential fault occurs, the mobile rod 130 is displaced, here in the direction Z30. Under the action of the displacement of the mobile rod 130, the rearming leg 270 is pivoted between a first position, shown in Figures 3, 4, 6 and 8, and a second position, not visible in the figures. In this pivoting, the leg 270 drives the bolt 264 from its locked position to the unlocked position, counter to the action of the bolt spring 268. Since the bolt 264 is in the unlocked position, the drawer 262 is allowed to be displaced from the armed position to the tripped position, under the action of the drawer spring 266, and bears on the limb 272 of the hook 214, thereby pivoting the hook 214 from the holding orientation to the unhooked orientation. In doing so, the drawer 262 toggles the locking latch 210 from the locked configuration to the unlocked configuration. The released stirrup 152 toggles the mobile contacts 66 and 76 from the conducting position to the insulating position, while itself toggling from the armed position to the tripped position. During its pivoting to the insulating position, the contact 66 bears against the drawer 262 so as to return the drawer 262 to the armed position, counter to the action of the drawer spring 266. In doing so, the drawer 262 drives the rearming leg 270 to the first position. The mobile rod 130 is therefore returned, by the leg 270, to its initial position, such that the differential tripping device 114 is rearmed. During the displacement of the drawer 262 to the armed position, the drawer 262 allows the bolt 264 to be returned to the locked position by the bolt spring 268, such that the bolt 264 holds the drawer 262 in the armed position. In this situation, the mechanical amplifier 260 and the differential tripping device 114 are returned to their original configuration, so as to allow new tripping if a new fault occurs. At this time, the stirrup 152 is in the tripped position, the mobile contacts 66 and 76 are in the insulating position and the switching lever 190 is in the open position. The switching mechanism 150 described here and its mode of tripping by the tripping devices 110, 112 and 114 is given only by way of example. Advantageously, the magnetic tripping device 110 and the thermal tripping device 112 may be considered to be a single tripping device, then called "magnetothermal tripping device", which toggles the switching mechanism 150 to the tripped configuration when a short-circuit or overload electrical fault occurs by acting on the rocker 240. Advantageously, the fact that the stirrup 152 rotates in a direction opposite to the mobile contacts 66 and 76 makes it possible to position the magnetic tripping device 110 in the upper part of the housing 30, in practice as close as possible to the upper end 40 of the housing. Specifically, the positioning of the magnetic tripping device is constrained by the direction of rotation of the mobile contact 76, since the exit direction of the mobile core 122 of the magnetic tripping device has to correspond to the displacement direction of the mobile contact 76, the mobile contact being driven by the mobile core 122 when the magnetic tripping device 110 is excited by an electrical fault. The internal distribution of the elements contained in the electrical protection device 12 may be summarized as follows: The input terminals 62, 72 are arranged in the direction Z30 with respect to the output terminals 64, 74, that is to say above the output terminals 64, 74, and as close as possible to the supply comb 18 in the configuration with the device mounted on the electrical switchboard 10. The fixed contacts 68, 78 are arranged, in the height direction Z30, between the output terminals 64, 74 and the input terminals 62, 72. The mobile contacts 66, 76 are arranged, in the height direction Z30, between the fixed contacts 68, 78 and the input terminals 62, 72. The switching mechanism 150 is arranged, in the height direction Z30, between the output terminals 64, 74 and the input terminals 62, 72 and, in the depth direction Y30, between the back 34 and the front 32 of the housing 30. Furthermore, the switching mechanism is arranged partially in the two compartments 48 and 50, on either side of the internal partition 46. The switching lever 190 is arranged, in the depth direction Y30, between the switching mechanism 150 and the front 32. The magnetic tripping device 110 is arranged, in the height direction Z30, between the mobile contacts 66, 76 and the input terminals 62, 72, in the depth direction Y30, between the back 34 and the switching mechanism 150, and in the width direction X30, between the right hand side 42 and the internal partition 46 of the housing 30, that is to say in the right-hand compartment 48. Advantageously, the arc extinguishing chamber 100 is arranged, in the height direction Z30, between the mobile contacts 66, 76 and the input terminals 62, 72, in the depth direction Y30, between the back 34 and the magnetic tripping device 110, and in the width direction X30, between the right-hand side 42 and the internal partition 46 of the housing 30, that is to say in the right-hand compartment 48. The arc extinguishing chamber 100 and the magnetic tripping device 110 are therefore located at the same level in the height direction Z30 and in the same compartment. Advantageously, the thermal tripping device 112 is arranged, in the height direction Z30, between the output terminals 64, 74 and the mobile contacts 66, 76, in the depth direction Y30, between the back 34 of the housing 30 and the switching mechanism 150, and in the width direction X30, between the right-hand side 42 and the internal partition 46 of the housing 30, that is to say in the right-hand compartment 48. The thermal tripping device 112 is therefore arranged in the same compartment as the arc extinguishing chamber 100 and the magnetic tripping device 110. Advantageously, the differential tripping device 114 is arranged, in the height direction Z30, between the output terminals 64, 74 and the thermal tripping device 112, and, in the depth direction Y30, between the back 34 and the front 32. In the width direction X30, the differential tripping device 114 is arranged between the right-hand side 42 and the left hand side 44, that is to say that it is partially situated in both compartments 48 and 50. In practice, the differential relay 128 is arranged entirely in the left-hand compartment 50 and the differential sensor 126 is arranged in both compartments, in an opening formed in the internal partition 46. It will be noted that the front 32 of the housing 30 comprises a central part 280 that is further forward, in the direction Y30, than an upper part 282 and than a lower part 284, situated respectively, in the direction Z30, above and below the central part 280. This protrusion of the central part 280 defines a protruding volume 286. Advantageously, the protruding volume 286 comprises only the switching lever 190 and part of the switching mechanism 150. In practice, the protruding volume 286 comprises in particular the stirrup 152 and the locking latch 210. The tripping devices 110, 112 and 114 are thus arranged, in the depth direction Y30, between the back 34 of the housing, on the one hand, and the upper part 282, the lower part 284 and the protruding volume 286, on the other hand. Furthermore, the mobile contacts 66 and 76 extend from the protruding volume 286, containing the mobile contact axis X66, in the direction of the back 34, in a direction opposite to the direction Y30. For the electrical protection device 12, the differential tripping device 114 constitutes a functional component that is able to be replaced by another functional component offering a different function. Within the electrical protection device 12, a distinction is thus drawn, on the one hand, between a functional component, which is the differential tripping device 114 in the example shown, and, on the other hand, a main module, denoted 300, which advantageously comprises, in the example shown, the conductive paths 60 and 70, the arc extinguishing chamber 100, the magnetic tripping device 110, the thermal tripping device 112, the switching mechanism 150 and the switching lever 190.

As a variant, the tripping device 114 is replaced by another functional component, which is a tripping device configured so as to be excited by an electrical fault of a predetermined type other than the abovementioned electrical faults, such as for example an electric arc occurring on an installation connected to the output terminals 64 and 74, or else a tripping device configured so as to be controlled by a communication system, for example so as to be triggered when an opening signal is communicated. As a variant, the tripping device 114 is replaced by another functional component, which is a monitoring system. Such a monitoring system is in practice a tracking system configured so as to measure physical quantities representative of the operation of the protection device and/or to detect the operating state of the protection device. Advantageously, such a monitoring system is configured so as to communicate information with a remote information system. For example, such a monitoring system makes it possible to count the number of toggling operations of the stirrup 152 from the armed position to the tripped position, or to track the consumption of an installation connected to the output terminals 64 and 74. When the tripping device 114 is replaced by such a monitoring system, the switching mechanism 150 does not comprise a mechanical force amplifier 260. Any feature described for one variant in the above text may be implemented for the other variants described above, as long as this is technically feasible. The reference to any prior art in this specification is not, and should not be taken as, an acknowledgement or any form of suggestion that such prior art forms part of the common general knowledge. It will be understood that the terms "comprise" and "include" and any of their derivatives (e.g. comprises, comprising, includes, including) as used in this specification, and the claims that follow, is to be taken to be inclusive of features to which the term refers, and is not meant to exclude the presence of any additional features unless otherwise stated or implied. It will be appreciated by those skilled in the art that the disclosure is not restricted in its use to the particular application or applications described. Neither is the present disclosure restricted in its preferred embodiment with regard to the particular elements and/or features described or depicted herein. It will be appreciated that the disclosure is not limited to the embodiment or embodiments disclosed, but is capable of numerous rearrangements, modifications and substitutions without departing from the scope as set forth and defined by the following claims.

Claims

1. Electrical protection device comprising: a housing, by way of which the electrical protection device is configured so as to be mounted on a rail belonging to an electrical switchboard, two conductive paths that are electrically insulated from one another and distributed within the width of the housing, each conductive path individually comprising: o an input terminal, arranged at an upper end of the housing so as to be connected to a supply comb , belonging to the electrical switchboard; o an output terminal, arranged at a lower end of the housing; and o a mobile contact able to move in rotation with respect to the housing between a conducting position, in which the mobile contact electrically connects the input terminal to the output terminal of this conductive path, and an insulating position, in which the input terminal and the output terminal of said conductive path are electrically insulated from one another, - a switching mechanism that is configured so as to toggle between an armed configuration, in which the switching mechanism puts the mobile contacts into the conducting position, and a tripped position, in which the mechanism puts the mobile contacts into the insulating position, - a first tripping device, which is arranged in the housing and which is configured so as to toggle the switching mechanism to the tripped configuration under the effect of an electrical fault of a first type, - a switching lever: o able to move in rotation about a lever axis; o able to be actuated, by a user, between a closed position, for putting the switching mechanism into an armed position, and an open position, for putting the switching mechanism into a tripped configuration; and o able to be actuated, by the switching mechanism, from its closed position to its open position, when the switching mechanism is toggled to the tripped configuration under the effect of thefirst tripping device, characterized in that each mobile contact is able to move in rotation with respect to the housing about a mobile contact axis parallel to the lever axis and in that, when the switching lever is pivoted from the closed position to the open position and the mobile contacts are pivoted from their conducting position to their insulating position, the mobile contacts rotate in the same direction with respect to the housing about their respective mobile contact axis and the direction of rotation of the mobile contacts is opposite the direction of rotation of the switching lever.

2. Electrical protection device according to Claim 1, wherein the switching mechanism comprises a stirrup, which is able to move in rotation about a stirrup axis parallel to the mobile contact axis, between an armed position, when the switching mechanism is in the armed configuration, and a tripped position, when the switching mechanism is in the tripped configuration, the stirrup being configured so as: - when the stirrup is put into the armed position, to put the mobile contacts into the conducting position; and - when the stirrup is put into the tripped position, to put the mobile contacts into the insulating position, wherein the stirrup and the mobile contacts pivot in opposing directions when the stirrup pivots from its armed position into its tripped position and the mobile contacts are pivoted from their conducting position into their insulating position.

3. Electrical protection device according to Claim 2, wherein the switching mechanism furthermore comprises: - a stirrup spring, which exerts a force on the stirrup, with respect to the housing, which tends to toggle the stirrup from its armed position into its tripped position, and - a locking latch, able to move between: o a locked configuration, in which • the locking latch slaves the rotation of the stirrup to the rotation of the

switching lever, such that the lever drives the stirrup into the armed position when the lever is actuated into the closed position, and the lever releases the pivoting of the stirrup into the tripped position when the lever is actuated into the open position, • when the stirrup is in the armed position and when the switching lever is in the closed position, the stirrup and the lever hold one another in position; and " a locked configuration, in which

• the locking latch allows the stirrup to toggle into the tripped position even if the lever is in the closed position, • the locking latch allows the switching lever to rotate into its open position when the switching mechanism toggles to the tripped configuration.

4. Electrical protection device according to Claim 3, wherein: - the switching lever furthermore comprises a lever spring, which exerts a force on the switching lever, with respect to the housing, which tends to toggle the lever from the closed position into the open position, - the switching mechanism furthermore comprises a connecting rod, comprising a first end, which is linked to the lever and a second end, which o is captured by the locking latch when the latch is in the locked configuration, such that: • when the switching lever is in the closed position, the connecting rod holds the locking latch in the locked configuration and the switching lever in the closed position, by bearing on the lever by way of its first end and on the stirrup and the locking latch by way of its second end, • when the switching lever is actuated from its closed position into its open position, the lever drives the locking latch to the unlocked configuration by way of the connecting rod, and o is released by the locking latch when the latch is in the unlocked configuration, such that the connecting rod does not oppose the toggling of the lever into the open position and the stirrup into the tripped configuration.

5. Electrical protection device according to either one of Claims 3 and 4, wherein the locking latch comprises: - a hook, able to pivot with respect to the stirrup about a hook axis parallel to the stirrup axis, and - a bolt, able to pivot with respect to the stirrup about a bolt axis parallel to the stirrup axis, and wherein:

- in the locked configuration, the bolt and the hook are in contact against one another so as to slave the rotation of the stirrup to the rotation of the switching lever, and - in the unlocked configuration, the bolt and the hook are not in contact so as to release the rotation of the stirrup with respect to the rotation of the lever.

6. Electrical protection device according to any one of Claims 3 to 5, wherein the switching mechanism furthermore comprises a latch spring, which exerts a force on the locking latch, with respect to the stirrup, which tends to toggle the latch to the locked configuration.

7. Electrical protection device according to any one of Claims 3 to 6, wherein: - the stirrup spring is a torsion spring, comprising: o a first branch that bears against the housing; and o a second branch that bears against the stirrup, and - the stirrup is configured such that, when the stirrup is pivoted from the armed position into the tripped position, a distance between the stirrup axis and a straight line perpendicular to a contact surface between the second branch and the stirrup increases.

8. Electrical protection device according to any one of Claims 3 to 7, wherein the switching mechanism furthermore comprises a rocker, which is able to pivot with respect to the housing between an initial position and a toggled position, such that the pivoting of the rocker from its initial position into its toggled position toggles the locking latch from its locked configuration to its unlocked configuration, and wherein the first tripping device is configured so as to drive the rocker from the initial position to the toggled position, under the effect of an electrical fault of a first type.

9. Electrical protection device according to any one of the preceding claims, wherein the first tripping device is: - a magnetic tripping device, configured so as to toggle the switching mechanism to the tripped configuration when the electrical fault of the first type is a short circuit occurring between the output terminals, or

- a thermal tripping device that toggles the switching mechanism to the tripped configuration when the electrical fault of the first type is an overload occurring at the output terminals, or - a magnetothermal tripping device which toggles the switching mechanism to the tripped configuration when the electrical fault of the first type is a short circuit occurring between the output terminals or an overload occurring at the output terminals.

10. Electrical protection device according to any one of the preceding claims, also comprising: - an arc extinguishing chamber, and - a functional component arranged in the housing, between the output terminals and the mobile contacts, the switching mechanism, the switching lever and the arc extinguishing chamber, wherein the functional component is chosen from: o a second tripping device configured so as to toggle the switching mechanism to the tripped configuration under the effect of an electrical fault of a second type, such as for example: Sa differential tripping device configured so as to toggle the switching mechanism to the tripped configuration when the electrical fault of the second type is a differential current; Sa tripping device controlled by a communication system; or Sa tripping device configured so as to toggle the switching mechanism to the tripped configuration when the electrical fault of the second type is an electric arc occurring on an installation connected to the output terminals of the conductive paths, and o a monitoring system.

11. Electrical protection device according to Claim 10, wherein: - the functional component is a second tripping device; - the switching mechanism comprises a drawer, the drawer being able to be actuated with respect to the housing between an armed position and a tripped position, in which the drawer toggles the switching mechanism to the tripped configuration; and - the second tripping device is configured to actuate the drawer from the armed position

to the tripped position under the effect of an electrical fault of the second type.

12. Electrical switchboard comprising a supply comb and a fastening rail arranged below the supply comb, the electrical switchboard comprising the electrical protection device according to any one of the preceding claims, the electrical protection device being fastened to the fastening rail, such that the lever axis is parallel to the fastening rail, the input terminals being electrically connected to the supply comb, connectors of the supply comb being plugged into the input terminals.