RU153928U1 - ELECTRIC SWITCHING DEVICE FOR LOW VOLTAGE CHAINS - Google Patents

Abstract

1. An electrical switching device (1) for low voltage circuits, characterized in that it comprises a main body (2) having: - a first section (21) that defines a first enclosing space for one or more electric poles (20A, 20B, 20C ), wherein each of the said electric poles contains at least one fixed contact (60) and a corresponding movable contact (70) that can be connected / disconnected to / from each other; - a second section (22) that defines the second enclosing space for fur anism (98), functionally connected to the drive shaft (53), and the drive shaft (53) is functionally connected to the movable contact (70) of each pole (20A, 20B, 20C) in order to connect / disconnect said movable contact to / from the corresponding fixed contact (60); - the third section (23), which defines the third enclosing space for one or more first auxiliary devices (91a, 91b, 91c, 91d) of the switching device; - the fourth section (24), which defines the fourth enclosing space for block (99) protection and / or control a switching device; wherein said switching device comprises a support device (600) for the drive shaft (53), which is connected so that it can move to the wall (6) of said main body (2), said drive shaft (53) functionally connected to the support device (600) so as to rotate about the axis of rotation (601) relative to the said wall (6) and to the said support device (600), and said switching device also includes means (620) for adjusting

Description

FIELD OF TECHNOLOGY

This utility model relates to an electrical switching device that is preferably used in low voltage circuits.

BACKGROUND OF THE INVENTION

As is known in the art, switching devices are used in low-voltage electrical circuits (which are designed for applications that use rated voltages up to 1000 V AC and up to 1500 V DC), while switches, circuit breakers, disconnectors and contactors are typically devices designed for the proper operation of specific parts of electrical circuits and the loads functionally associated with them.

Switching devices comprise one or more electrical poles, each pole comprising at least one fixed contact and a corresponding movable contact to which corresponding terminals are connected for connection to an input / output of an electrical circuit.

The corresponding drive mechanism drives the movable contacts; in particular, the action of the drive mechanism is based on the rotation of the drive shaft, which is functionally connected to the movable contacts in such a way that as a result of its rotation, the movable contacts are connected (switching closure device) or disconnected from (switching opening device) of the fixed contacts. The connection / disconnection between the fixed and movable contacts occurs inside or in the immediate vicinity of special arc chambers, which are designed in such a way as to minimize the effect of electric arcs.

Moving the movable contacts can be done either manually, by means of the corresponding levers located on the front panel of the circuit breaker, or otherwise, due to the operation of the protection and control devices (such as electronic relays) of the switching device.

The switching devices can be equipped with auxiliary devices, such as, for example, the aforementioned protection and control unit, whose main task is to adjust the operation of the electrical switching according to the functions that the operator can pre-install or install using the appropriate user interface means.

In addition, switching devices are usually equipped with several auxiliary devices for performing specific functions, for example, providing auxiliary contacts, contacts for signaling the status of the switching device (open, closed), actuators for loading springs, solenoid disconnecting devices, sensors, etc. d.

The presence of these auxiliary devices usually leads to complex decisions related to connecting the cable, which is a drawback in terms of installation, as well as in terms of associated costs.

The switching devices comprise a main protective housing for their internal components, such as electric poles, a drive mechanism and any protection and control units, and auxiliary devices.

The front wall of the housing is defined by one panel to close the spaces for placement, designed to accommodate the drive mechanism and auxiliary devices. Thus, the drive mechanism is available whenever a cover is removed, even if it is only necessary to install or remove one auxiliary device.

As is known in the art, the switching device can be either “fixed” or “retractable”. In the first case, the case of the switching device is directly attached to the supporting structure; in the second case, the main protective casing is inserted / removed into / from the additional supporting casing, which, in turn, is attached to the supporting structure.

Considering a pull-out switching device, each connection that is provided between auxiliary devices and / or the protection and control unit installed inside the main body and the external space, which is usually realized by means of a terminal block, adversely disconnects on the main body whenever the switching device is removed from bearing housing. Such disconnection leads to the loss of at least one moment of any information stored inside the auxiliary devices and / or the protection and control unit, which then must be reconfigured or verified in the case when the switching device is again set to its inserted position.

In general, regardless of their possible structural arrangement, switching devices must be quick and reliable during surgical interventions, they must guarantee an adequate service life and must have a design that is as strong as possible, compact and flexible and thus easy to assemble and install and also produced at a competitively priced price.

SUMMARY OF THE USE OF A USEFUL MODEL

The objective of the present utility model is to provide a switching device of this type, which would have improved functions and capabilities.

This problem is solved using a switching device, as indicated in the attached claims and described below.

In particular, a switching device according to the present utility model will be described below with reference to its implementation as a circuit breaker without intent to limit in any way possible applications: for example, the switching device according to the utility model may be a disconnector or contactor.

BRIEF DESCRIPTION OF THE DRAWINGS

Characteristics and advantages will be mainly presented in the description of preferred, but non-exclusive forms of circuit breaker in accordance with this utility model, which will be illustrated by adapted sample blocks, moreover:

figure 1 shows a General view of a circuit breaker according to the present utility model;

figures 2-6 depict perspective images in a partially disassembled form of a circuit breaker (figure 1);

figure 7 shows a view of one pole of a circuit breaker (figure 1) at the assembly stage;

figure 8 shows a three-pole circuit breaker (figure 1) during the assembly phase;

figure 9 shows three poles (figure 8) assembled on one side of a circuit breaker that is connected to a support device for a drive shaft suitable for use inside a circuit breaker according to the present utility model;

figure 10 shows a General view of the drive shaft, suitable for use inside a circuit breaker in accordance with this utility model;

in figures 11 and 12 shows a General view at different angles of the drive mechanism, suitable for use inside the circuit breaker according to the utility model;

the figure 13 shows the elements of the drive mechanism in disassembled form (figures 11 and 12);

figure 14 shows the user interface in the form of "on / off switches", which is suitable for use with the protection unit and / or control circuit breaker according to this utility model /

15 illustrates a protection and / or control unit that is suitable for use with a circuit breaker according to the present utility model and which comprises a display-based user interface;

16 illustrates a first example of visualization of a protection and / or control display unit for a circuit breaker according to the present utility model;

17 illustrates a second example of visualization of a protection and / or control display unit for a circuit breaker according to the present utility model;

Figure 18 shows a third example of visualization of a protection and / or control display unit for a circuit breaker according to the present utility model;

19 is a first general view showing a first example of a converter that is suitable for use in a circuit breaker according to the present utility model together with a second general view of such a converter with a part of its housing removed;

figure 19A shows a General view of the components located inside the shell of the Converter, illustrated in figure 19;

20 is a first general view showing a second example of a converter that is suitable for use in a circuit breaker according to the present utility model together with a second general view of such a converter with a part of its housing removed;

21 is a first general view showing a third example of a converter that is suitable for use in a circuit breaker according to the present utility model together with a second general view of such a converter with a part of its housing removed;

figure 22 shows a General view of the sliding configuration of the circuit breaker shown in figure 1, whereby the circuit breaker is in the inserted position relative to its bearing housing;

figure 23 shows a General view of a set of auxiliary devices suitable for use inside a circuit breaker in accordance with this utility model;

in figures 24 and 25 shows General views in partially exploded view of a set of auxiliary devices shown in figure 23;

figure 26 shows a General view of the auxiliary device with a set of auxiliary devices shown in figure 23;

Figure 27 shows four examples of electrical leads that can be used inside a circuit breaker according to the present utility model;

figure 28 shows a portion of the rear wall of the circuit breaker shown in figure 22, in its retractable configuration;

FIG. 29 is a perspective view showing in detail some components of a circuit breaker according to the present utility model comprising the support device shown in FIG. 9;

FIG. 30 is a perspective view showing some components of the support device shown in FIG. 29;

figure 31 shows an exploded view of the components of the support device shown in figure 29;

in figures 32 and 33 depicts General views showing the sequence of movements of the components shown in figure 31 during rotation of the drive shaft of the circuit breaker;

figure 34 shows a view in section of some components of a circuit breaker according to the present utility model.

DESCRIPTION OF PREFERRED EMBODIMENTS OF A USEFUL MODEL

The figure 1 is a General view showing a possible embodiment of a circuit breaker 1 according to the present utility model. In particular, in the embodiment shown by the above figures and described below, the circuit breaker 1 is a three-pole type; it is obvious that the circuit breaker 1 can be implemented with a variable number of poles according to the requirements of the electrical circuit into which it is inserted, for example, a single-pole or three-pole. In the case of requirements for operation under especially severe conditions, the poles can be duplicated either all or partially, while you can, for example, have configurations with six or eight poles in three- or four-phase circuits, respectively, you can also have seven poles for three-phase installations plus neutral, where the neutral pole is not duplicated.

Assembled circuit breaker 1 contains the main body 2, which is hereinafter referred to for simplicity as “housing 2”. The housing 2 has a substantially prismatic shape and comprises a front wall 3, a rear wall 4, a first side wall 5, a second side wall 6, a lower wall 7 and an upper wall 8.

Walls 3, 4 occupy a mutually opposite position with respect to the circuit breaker 1, as well as to a pair of side walls 5, 6 and to the lower and upper pair of walls 7, 8.

In the example shown in FIG. 1, the side walls 5 and 6 form two side sides 5 and 6 of the circuit breaker 1, and are preferably made of a metal sheet.

Circuit breaker 1 can be either “fixed” or “withdrawable” type.

In the first case, the housing 2 is attached to a supporting frame (such as an electrical cabinet) on the rear wall 4 and / or side walls 5, 6.

In the second case, the housing 2 is operatively connected to another supporting structure or housing 1000, which is indicated below for simplicity as “housing 1000”.

In turn, the housing 1000 is suitable for attachment to a support frame (such as an electrical cabinet).

In particular, due to the action of a manual or motorized manipulation means, the circuit breaker 1 can be moved from the “inserted” position inside the housing 1000, as a result of which it is electrically connected to the electric line, and the “extracted” position from the housing 1000, in which it is electrically disconnected from electric line.

Obviously, in both configurations under consideration, the circuit breaker 1 is positioned so that the rear wall 4 is facing the supporting structure, and the front wall 3 is free and therefore easily accessible to the operator.

With reference to FIG. 22, the housing 1000 comprises two sides 1001 and 1002, a rear wall 1003, an upper wall 1004 and a lower wall 1005, which together form an internal volume into which the housing 2 can be removably inserted.

The walls 3, 4, 5, 6, 7 and 8 of the housing 2 form a protective volume for the internal components of the circuit breaker 1.

In particular, the housing 2 comprises a first section 21, which forms a first enclosing space for the electric poles 20A, 20B and 20C, each of which contains at least one fixed contact 60, and one movable contact 70, which can be mutually connected / disconnected inside corresponding chamber 80. In particular, the contact 70 can be moved between an open position in which it is electrically separated from the corresponding fixed contact 60 (circuit breaker 1 is open) and a closed position in which it is electrically connected to the fixed contact 60 (one circuit breaker closed).

The electrical terminals 17 may be connected to the poles 20A, 20B and 20C for electrical connection with the phase conductors of the circuit in which the circuit breaker 1 is installed.

In the case of a stationary circuit breaker 1, the electrical terminals 17 protrude from the rear wall 4 of the housing 2, as shown, for example, in figures 1-5. In the case of a withdrawable circuit breaker 1, the electrical terminals 17 protrude from the rear wall 1003 of the housing 1000, as shown, for example, in figure 28.

The movement of the movable contacts 70 of the poles 20A, 20B and 20C is due to the drive mechanism 98, which in working condition is connected to them. In particular, the action of the drive mechanism 98 with respect to the movable contacts 70 occurs through a drive shaft 53, which is positioned between and functionally connected to the side walls 5 and 6 of the circuit breaker 1 so as to rotate around its own axis of rotation 601.

The drive shaft 53 is functionally connected to the movable contacts 70 of the poles 20A, 20B and 20C so that they are forced to move as a result of their rotation, while the drive mechanism 98 is directly functionally connected to the drive shaft 53 in order to cause its rotation and thereby move contacts 70.

The housing 2 also includes: a second section 22, which defines a second enclosing space for the drive mechanism 98 and the drive shaft 53, with which it is functionally connected; and a third section 23, which defines a third enclosing space for one or more auxiliary devices 91A, 91B, 91C and 91D of the circuit breaker 1.

The housing 2 also comprises a fourth section 24, which defines a fourth enclosing space for the protection and / or control unit 99 of the circuit breaker 1 according to the present utility model. The presence of the protection and / or control unit 99 essentially depends on the use of the switching device 1: when using the latter as a disconnector of the electric line, the protection and / or control unit 99 will be absent, and the fourth enclosing space for the housing 2 will basically remain empty.

The housing 2 preferably comprises a fifth section 25, which defines a fifth enclosing space for the manual control lever 97 of the drive mechanism 98.

With reference to the normal vertical mounting of the circuit breaker 1, the section 21 of the housing 2 is positioned in the operating position close to the rear wall 4 between the upper and lower walls 7 and 8, while the sections 22, 23, 24 and 25 are positioned close to the front wall 3.

Sections 22, 23 are located in a position that is separated from the upper wall 8, while section 24 is positioned near the last and on top of sections 21, 22, 23 and 25. In particular, section 22 is positioned in the central zone of the front wall 3, while the section 23 is divided into two separate compartments, each of which is positioned close to one of the two side walls 5, 6.

Inside the first compartment, section 23 contains the first seats 231A, 231B, which is positioned close to the side wall 5. The first seats 231A, 231B form the first plurality of third accommodating spaces for accommodating some auxiliary devices; for example, as shown in figures 5 and 6, the first seat 231A is suitable for accommodating the motor 91A for loading the spring (“electric actuator”), and the second seat 231B is suitable for accommodating one or more auxiliary contacts 91B.

Inside the second compartment, section 23 advantageously comprises second seats 232A, 232B, which are positioned close to the side wall 6, second seats 232A, 232B define a second plurality of third accommodating spaces for accommodating additional accessories; for example, as shown in figures 5 and 6, the second footprint 232 is suitable for hosting a plurality of signaling contacts 91C for signaling, for example, one or more operating states of the circuit breaker 1, and the second footprint 232B is suitable for hosting a plurality of trip devices 91D, such as circuit-breaker trip coils 1 (BA, SOR), closing coils (BC, SCR) or undervoltage releases (“Under Voltage Release” or UVR or MT).

The working arrangement described for sections 21-25 of the housing provides the space available for optimizing the internal components of the circuit breaker 1; thus, the circuit breaker 1 comprises a compact design with particularly reduced dimensions.

The internal components of the circuit breaker 1 (located inside the respective spaces for placement, limited by sections 21-25 of the housing 2) are described below in more detail with reference to the figures.

In particular, with reference to figures 7-9, the poles 20A, 20B and 20C of the circuit breaker 1 form structurally self-contained units that are independent, essentially equal to each other. In practice, each of the poles 20A, 20B and 20C is made with its own shell 30, which has a substantially prismatic shape and is implemented using two half-shells of insulating material 30A and 30B. The two half-shells 30A and 30B are joined together along the hinge, whose complementary profiles are made to be aligned in such a way as to guarantee mechanical stability and sufficient tightness with respect to any gases that can form inside the shell 30. In particular, the profiles of the joint line contain recesses 4000 and protrusions 5000, which are calibrated in a calibrated manner, and which form a labyrinth that counteracts the release of gases produced by the electric arc. Alternatively or in addition to the recesses 4000 and the corresponding protrusions 5000, the profiles of the lines of the joint can represent grooves and corresponding reliefs, which are made with the possibility of combining with each other.

The shell 30 comprises a fixed contact 60 and a corresponding movable contact 70 of the pole 20A, 20B and 20C together with an arc chamber 80, which is configured to limit the space within the shell 30 in which the movable contact 70 and the fixed contact 60 are separated.

In particular, the movable contact 70 is mounted on the supporting structure 130 and pivotally connected to it by the axis 19 so that it can rotate around the axis of rotation 8200, while the outer sides of the shell 30 extend on planes that are essentially perpendicular to the axis of rotation 8200.

The arc chamber 80 contains a body 82 of a certain shape on which are mounted plates for an arc discharge for and an element 85 made of a material that emits gas when heated (i.e., an insulating material with gas-forming properties that releases deionizing substances when heated).

With reference to figure 7, the body 82 of a certain shape contains, for example, the upper wall 83, from which stands a pair of side walls 84, which are at a distance from each other and facing each other. The arc chamber 80 is installed inside the shell 30 so that the separation of the fixed and movable contacts 60, 70 occurs in the vicinity of the side walls 84; and for this, the side walls 84 are located on either side of the stationary contact 60.

In the space between the side walls 84, an element 85 is also inserted, which emits gas when heated, and an arc discharge plate 81 so as to be close to the separation zone between the fixed and movable contacts 60, 70, where an electric arc is formed, and so where a significant amount of heat is generated.

In particular, the heating gas evolving element 85 comprises mechanical connection elements 86 which are adapted to be connected to respective connecting places 87 that are formed within the side walls 84; furthermore, the heating gas generating element 85 is formed so as to close the inner surfaces of the side walls 84, positioning directly between these inner surfaces and the arc discharge plates 81.

As a result of the heating produced by the energy that is released during arc burning, the gas evolving element 85 emits deionizing substances that prevent the arc from burning, thereby accelerating interruption and ultimately reducing arc extinction time and overall amount of energy released; in addition, the extinguishing gases produced push the electric arc in the direction of the arc discharge plates 81.

Together with the side walls 84 of the body 82 of a certain shape, the element 85, which emits gas when heated, helps to prevent improper combustion of the electric arc, maintaining it in an effective manner within the zones responsible for its extinction.

The shell 30 has an opening 9, which, during the assembly of the poles 20A, 20B and 20C, is occupied by the upper wall 83 of the arc chamber 80; however, many holes 10 are located within the upper wall 83.

In addition to the arc chamber 80, the housing 30 also includes electrodes 13 and 14, which are electrically connected to the fixed contact 60 and the movable contact 70, respectively. In particular, the connection between the half-shells 30A and 30B sets the boundaries of the hole 15, which provides access to the surface of the electrode 13 on the outside with respect to the shell 30; however, the shell 30 further comprises an opening 16 located within the half-shell 30B, which also makes available the surface of the electrode 14 from the outside with respect to the shell 30.

Inside the shell 30 of each of the poles 20A, 20B and 20C, a location 240 is provided for the converter 700, which is preferably electrically connected to the protection and / or control unit 99 of the circuit breaker 1. To this end, the grooves 29 extending on the outside of the half-shells 30A, 30B provide cable passage for converter 700 to protection and / or control unit 900.

Advantageously, with particular reference to Figures 19A-19B, the transducer 700 comprises a first closed magnetic circuit 710, which consists of a set of circuit boards; while the continuation of the first magnetic circuit 710 in the form of a closed loop allows you to surround the primary wire of the poles 20A, 20B and 20C, within which the transducer 700 is installed. For example, with reference to figure 7, the transducer 700 is placed within the corresponding location 240 of the sheath 30 in this way that its first magnetic circuit 710 surrounds the electrode 14 of the movable contact 70.

The secondary winding 712, which has the function of generating a secondary winding current for supplying the protection and / or control unit 99, is wound around a segment of the first magnetic circuit 710.

The device 700 further comprises a second magnetic circuit 720, also preferably formed by a plurality of stacked plates; the two magnetic circuits 710 and 720 are structurally separated, and are different from each other and compressed so that at least part of the magnetic flux circulating in the first magnetic circuit 710 is intercepted by the second magnetic circuit 720. In particular, the second magnetic circuit 720 is physically placed around the secondary winding 712 in order to wrap part of it and to functionally connect with the first magnetic circuit 710 in two main zones, where the two magnetic circuits are essentially in contact with each other. The two communication zones are preferably located at the ends of the secondary winding 712 in order to obtain the desired bypass path for magnetic flux.

In practice, within the communication zones between two magnetic circuits, the first magnetic flux is intercepted and deviates locally towards the second magnetic circuit 720. When passing from circuit 710 to circuit 720, magnetic induction lines follow the path where at least one component of such lines magnetic induction becomes orthogonal in the direction of the stacked plates, while, respectively, at least one component of these deflected lines of magnetic induction crosses in the perpendicular direction flat the plates of the two circuits 710 and 720, thus overcoming the natural air gaps formed by the gaps between the adjacent plates of each of the magnetic circuits 710 and 720 and between the circuits 710 and the circuit 720. This path leads to the desired effect of weighted subtraction of fluxes based on the current value primary winding.

In addition, the connection between the surfaces of the magnetic circuits 710 or 720 can be realized in a direct way, that is, by using two magnetic circuits interacting with each other, or by finding between the interface elements formed, for example, using diamagnetic material, and this solution facilitates the passage of magnetic flux from the first to the second magnetic circuit at high current levels in the primary wire, while at low currents the passage of magnetic flux between the two circuits is suppressed.

In particular, with increasing current in the primary winding wire, the first magnetic flux also tends to gradually propagate into the second circuit 720. Thus, the second flux will circulate in the second magnetic circuit 720 taking into account a proportion that is variable with respect to the flux generated the current flowing in the primary winding wire, and part of the flow flowing in the second magnetic circuit 720 increases with increasing value of the current circulating in the primary winding wire, this will happen l gradually disconnecting the first magnetic circuit 710. Of these two magnetic fluxes, only the first is related to the secondary winding 720, and therefore the amperometric output signal depends on such a first magnetic flux.

The output signal is due to the following: at low currents flowing in the primary winding wire, there is no noticeable migration of flux to the second magnetic circuit, which means that the resulting secondary winding current is thus fully accessible for supplying the protection and / or control unit 99. At high currents of the primary winding, the output signal generated on the winding, on the contrary, is accordingly reduced so that it remains within the range of compatibility with the electrical characteristics of the protection and / or control unit 99.

With reference to three exemplary embodiments illustrated in Figures 19-21, the transducer 700 comprises a sheath 714 made of an insulating material that insulates all components internal to the transducer 700, this resulting in compactness, strength, reduced size, and simple assembly.

The shell 714 is implemented by connecting the first half-shell 714A, which is made with the possibility of forming a place to accommodate the internal components of the Converter 700, and the second half-shell 714B, which is made with the possibility of closing the internal components placed inside the half-shell 714A.

An opening 716 of the shell 714 provides a passage for the electrical connections of the secondary winding 712, which are necessary for the operation of the protection and / or control unit 99.

The figures illustrate how the sheath 714 is positioned so that it contains an additional current transducer 715 (or a transducer that calculates the derivative of the current, such as a Rogowski sensor or a series of Hall sensors) around the primary winding wire, which transducer is particularly suitable for detecting or measuring quantities current. In this case, the hole 716 also allows you to provide a passage for electrical connections for the last device.

In practice, with this solution, the power supply device 700 implements one unit together with a current sensor, which can be directly and easily inserted into the seat 240 of the sheath 230 of the corresponding poles 20A, 20B and 20C.

With reference to FIG. 8, openings 27 are provided in the jacket 30 of each pole 20A, 20B, and 20C, which are configured to allow passage of mounting rods 28 (only two of them are illustrated in FIG. 8).

During assembly of the circuit breaker 1, the desired number of poles are stacked together and assembled between the side walls 5 and 6 of the circuit breaker 1 (where only wall 6 is illustrated in FIGS. 8 and 9), thereby resulting in a “bundled” or “multilayer” configuration.

In particular, mounting rods 2-8 pass through each of the poles 20A, 20B and 20C, thereby guaranteeing accuracy and compact alignment. In addition, the support device 2900 is used to receive the corresponding lower portions of the shells 30, which helps to maintain the poles 20A, 20B and 20C compact, tightly laid side to side.

In practice, the block formed by the poles 20A, 20B and 20C of the circuit breaker 1 is essentially one prismatic assembly.

With reference to FIG. 1, after the pole block 20A, 20B and 20C is installed between the side walls 5 and 6 of the housing 2, the upper walls 83 of the arc chambers 80 of these poles 20A, 20B and 20C form a portion of the upper wall 8 of the housing 2.

Slots 10 within the upper wall 83 allow gas to be removed from the circuit breaker 1, which is formed during the burning of an electric arc on the upper wall 8.

With reference to FIG. 22, in the case of a withdrawable circuit breaker 1, the upper wall 1004 of the housing 1000 comprises a grill 1006 with slots 1007 that cooperate with the slots 10 of the housing 2 in order to allow the gas that is generated by the poles 20A, 20B and 20C to exit on the upper wall 1004.

In addition, the rear portion of the block containing the poles 20A, 20B and 20C, forms at least a portion of the rear wall 4 of the housing 2.

In the case of a stationary circuit breaker 1, the electrical terminals 17, 18 of each pole 20A, 20B and 20C are attached to the electrodes 13 and 14 so that they protrude from the rear wall 4, as shown in figures 1-5. To this end, the electrodes 13 and 14 have openings 200 for mounting the respective terminals 17; moreover, in practice, the terminals 17 also have holes 201 that coincide with the holes of the electrodes 13 and 14, thereby providing a clamp by means of a screw between the electrodes 13 and 14 and the corresponding terminals 17.

With reference to the exemplary embodiments illustrated in FIG. 27, the terminals 17 comprise a base 18 from which one or more terminals 202 protrude in the transverse direction. These terminals 202 are adapted to be attached to one or more distribution busbars that form the phase conductors of the circuit in which the circuit breaker 1 is installed.

On the basis of 18, holes 202 are provided, which are made for matching with the holes 201 of the corresponding electrodes 13, 14. In particular, the terminals 17 are mounted on their respective electrodes 13, 14 in accordance with the first or second orientation with respect to the rear wall 4 housing 2.

According to a first orientation, these one or more terminals 202 are arranged so that they can be connected to conductive busbars that protrude horizontally within a distribution system in which the circuit breaker 1 is installed, the second orientation of these one or more terminals 202 is rotated 90 ° with respect to the first orientation so that they can be attached to conductive busbars that protrude vertically within the distribution system.

With reference to FIG. 28, in the case of a withdrawable circuit breaker 1, the electrodes 17 protrude from the rear wall 1003 of the housing 1000 and are electrically connected electrically to the respective electrodes 13, 14 of the poles 20A, 20B and 20C by means of corresponding connecting elements, such as clamp terminals.

Figure 28 illustrates three electrodes 17 according to one of the examples illustrated in figures 27, in which two of them are mounted with respect to the rear wall 1003 so that they can be attached to the respective horizontal conductive busbars, while the remaining electrode is mounted rotated at an angle of 90 ° with respect to the other two terminals 17 so that it can be attached to the corresponding vertical conductive busbars.

From the front of the shell 30 of each pole 20A, 20B and 20C provides holes 11, which are made with the possibility of passage of the working connecting element between the corresponding movable contact 70 and the drive shaft 53.

These connecting elements are preferably made in the form of connecting rods 12 made of an insulating material. For example, with reference to figures 8 and 9, for each pole 20A, 20B and 20C, a pair of connecting rods 12 protrudes from the shell 30 through a corresponding hole 11, and these connecting rods 12 are pivotally connected on one side to the supporting structure 130 of the movable contact 70 (in within the shell 30), and on the other side they are functionally connected to the drive shaft 53 (placed together with the corresponding drive mechanism 98 in the enclosing space defined by section 22 of the housing 2).

Thus, the pairs of connecting rods 12 protrude from the front of the block formed by the stack of shelves 30 of the poles 20A, 20B and 20C, and the drive shaft 53 is positioned frontally in relation to such a block in order to functionally communicate with the pairs of connecting rods 2.

In particular, the sides 5 and 6 of the circuit breaker 1 protrude towards the front wall 3 at a distance of the pole block 20a, 20B and 20C, with holes 5200 provided on these sides 5, 6 (only one of the holes is shown in Figures 8 and 9) 5200). The opposite ends of the drive shaft 53 are accessible from the outside of the housing 2 through holes 5200.

With reference to figure 10, the drive shaft 53 contains levers 54 for communication with the connecting rods 12, and, in particular, each of the three illustrated levers 54 is inserted between and connected to a corresponding pair of connecting rods 12 connected to one of the poles 20A, 20B, 20C.

In addition, there is also an alarm means that is mounted or mounted on the drive shaft 53, such as, for example, cams 55 or levers 56, which are designed to perform alarm functions related to the state of the circuit breaker 1 (for example, closed and open) or to return accessories (for example, one of the 91D trip units).

According to the present utility model, the circuit breaker 1 comprises a support device for the drive shaft 53, which is shown in the figures with a common reference position 600.

With particular reference to figures 9 and 29-34, the support device 600 is connected to move the side wall 6 of the housing 2. The drive shaft 53 is operatively connected to such a support device 600 so that it can rotate around its own axis of rotation 601 relative to the side wall 6 and directly supporting device 600.

As an alternative to the example shown in the figures, the support device 600 may be operatively connected to the side wall 5 of the housing 2, or even more than one device 600 may be used; for example, you can use two devices 600, located on the respective two sides 5 and 6 of the housing 2.

In addition, the circuit breaker 1 comprises adjustment means 620 for setting at least the position of the drive shaft 53 with respect to the side wall 6.

According to an exemplary embodiment illustrated in the figures, the carrier 600 also comprises an “anti-bounce means” 630 that is configured to work in conjunction with the drive shaft 53 and prevent any bounce of the movable contacts 70 towards the stationary contacts 60 in the case when these movable the contacts 70 are driven by the drive shaft 53 in order to separate them from the respective fixed contacts 60.

The adjustment means 620 is preferably made with and operatively connected to the drive shaft 53 and the support device 600 in order to simultaneously adjust the position of the drive shaft 53 and the support device 600 relative to the side wall 6 to which the support device 600 is functionally connected.

In particular, the adjustment means 620 is arranged to simultaneously adjust the position of the drive shaft 53 and the support device 600 together with the anti-bounce means 630, which, as described herein, is directly part of the support device 600.

In particular, the support device 600 is pivotally connected to the corresponding side wall 6 using the hinge axis 602, which allows substantially to be parallel to the axis of rotation 601 and rotate about this axis 602.

In turn, as shown in FIG. 34, the adjustment means 620 is configured to move the drive shaft 53 (in both directions) along the support axis 603, which intersects the axis of rotation 601, while at the same time rotatable, the support device 600 about its own axis 602 hinges.

With reference to FIG. 30, the support device 10 comprises a mounting plate 610 of a certain shape, from which an axis 611 protrudes, which is pivotally connected to one side of the side wall 6 in such a way that it helps to determine the axis 602 of the hinge.

The mounting plate 610 of a certain shape contains an opening 612 into which the bearing shell 660 is inserted, and in practice a part of the drive shaft 53, which may, for example, be an end portion with a reduced cross section with respect to the main portion of the drive shaft 53, is inserted into the bearing shell 660 with minimal mechanical clearance. Bearing insert 660 forms a bearing for the drive shaft 53, therefore, this drive shaft 53 is supported by a support device 600 attached to the side wall 6 and can rotate inside the bearing insert 660 relative to the support device 600 and relative to the side wall 6.

The mounting plate 610 also includes an end portion, such as, for example, an upper end portion that is folded and formed in such a way as to provide two hooks 614, 615 with a crevice 616 between them.

As shown, for example, in Figures 29-31, the anti-bounce means 630 includes an engaging plate 631 that is connected to the second end of the axis 611 so that it can rotate around the hinge axis 602, simultaneously with a mounting plate 610 of a certain shape under the action of the means 620 adjustment, and so that it can rotate around the hinge axis 602 relative to the mounting plate 610, that is, using the mounting plate 610 is still in its position under the action of the drive shaft with 53.

In the exemplary embodiment illustrated in the figures, the engaging plate 631 comprises a first arm 632 and a second arm 633 so as to define an open cavity 341 between them, while the first arm 632 and the second arm 633 are capable of mechanical interaction with the corresponding portion 57 of the drive shaft 53, for example, with a pair of levers 57 shown in FIG. 10 and the direction of the corresponding portion 57 within the open cavity 341 in the case where the drive shaft 53 rotates to separate the movable contacts 70 from movable contacts 60.

Anti-bounce means 630 also includes a bias spring 635 located between the mounting plate 610 and the engaging plate 631; the bias spring 635 has a first end 636 that engages with a first coupling axis 613 that protrudes from a predetermined shape of the mounting plate 610 in the direction of the engaging plate 631, and a second end 637 that is engaged with the second connecting axis 638 that protrudes from the engaging plate 631 in the direction of the mounting plate 610 of a certain shape.

In turn, the adjustment means 620 comprises an adjusting screw 621, whose head 622 is inserted into the crevice 616 between the surfaces of the first and second hooks 614, 615 facing each other. The body 623 of the screw 621 extends into the second hook 615 and passes through a threaded hole made on the protrusion 640, which is integral with and which protrudes in the horizontal direction from the side wall 6 of the housing 2.

In addition, the adjustment means 620 comprises a nut 650, which is connected to the body 623 in such a way that it locks the drive shaft 53 together with the entire support device 600 in the adjusted position obtained.

With reference to figures 11-13, the drive mechanism 98 is described in detail, which is suitable for use in the circuit breaker 1. In particular, the drive mechanism 98 is installed inside the appropriate space for placement defined by section 22 of the housing 2 so that it can be operatively interact with the drive shaft 53.

The drive mechanism 98 comprises a frame consisting of a pair of supporting lateral sides 310 that are laterally connected to each other via communication means 4300, for example, axles, rods or spacers. The frame is connected to the housing 2 of the circuit breaker 1 by means of brackets 121.

The frame supports a kinematic chain, which is operatively connected to the drive shaft 53 in order to ensure the rotation of the drive shaft due to its action. Elements that realize the kinematic chain are functionally connected to each other and / or to the frame via means of a pin connection; for example, one or more axes made on each of the elements of the kinematic chain are pivotally connected to corresponding holes made on the sides of the frame 310 without using rods or other metal elements.

Advantageously, the drive mechanism 98, together with the support device 600, also has the function of supporting the drive shaft 53. In particular, the connection end parts 810 are made on each of the sides 310, and the end part 810 is shaped so that it can be inserted into the corresponding support recess 510 on the body of the drive shaft 53.

The insertion of the connection end portion 810 into the respective support recesses 510 forms a pair of hinges, which, in addition to the free rotation of the drive shaft 53, also effectively performs a shock transfer function and prevents any slipping of the drive shaft 53 along its own axis of rotation.

It should be clarified that the drive mechanism 98, despite the contribution to the support of the drive shaft 53, forms a self-supporting structure (“stand-alone”) having a stable structure, even if it is separated from the design of the circuit breaker 1.

The drive mechanism 98 includes a signaling device 530, which is configured to receive a first position and a second position that correspond to closed and open states of the circuit breaker 1; in particular, the signaling device 530 takes one of two positions in response to its working interaction with the corresponding signaling means 55, 56 of the drive shaft 53.

The drive mechanism 98 is a pre-prepared type of energy conservation, that is, before the circuit breaker 1 can be closed, it is necessary to compress a pair of springs 380 directly of the drive mechanism 98, in order to save the energy that is required for manipulation.

To this end, the drive mechanism 98 comprises a spring loading shaft 390 mounted between the sides of the frame 310 so that it can rotate. The rotation of the spring loading shaft 390 is caused by a drive mechanism that includes a manual control lever 97; in particular, the lever 97 acts on the shaft 390 for loading the spring by means of a lifting device 940.

The rotation of the spring loading shaft 390 can also be caused by the spring loading motor 91A, which is located within the corresponding position 231A of the housing 2 (in this case, the spring loading shaft actuator is referred to as “motor driven equipment” (MY)).

The kinematic chain for rotating the drive shaft 53 comprises a swing arm 800, which is configured to convert the rotation of the shaft 390 to load the spring into compression of the springs 380. In particular, the swing arm 800 is mounted so that it oscillates between the bearing sides 310 by means of a pair of axles 820, and comprises a pair of sides that are connected horizontally to each other by a first axis 9000 and a second axis 910.

The springs 380 are attached to the axis 910, while the first roller 920 and the second roller (not visible in FIG. 13) are mounted on the ends of the axis 900 in order to interact in working order with the first cam disk 890 and the second cam disk 950, respectively, which are mounted on shaft 390 for loading the spring.

In operation, the predetermined rotation of the shaft 390 for loading the spring (for example, due to the intervention of either the manual control lever 97 or the motor 91A for loading the spring) drives the cam discs 890 and 950 on the first roller 920 and the second roller of the swing arm 800, respectively. This interaction causes a corresponding oscillation of the swing arm 800, which leads to compression of the springs 380.

The drive mechanism 98 includes a locking lever 180, which is configured to interact with the corresponding portion of the cam disc 890 in order to block the rotation of the shaft 390 for loading the spring at the point of maximum compression of the springs 380.

The drive mechanism 98 includes a spring status signaling device 960 380, which assumes various positions corresponding to the operating configuration obtained using the shaft 390 for loading the spring (signaling via the wheel 970, which is mounted on the shaft 390 for loading the spring) and using the element 830. B in those cases when an opening command has already been issued, which is, for example, supplied from the protection and / or control unit 99, the element 830 has the task of prohibiting the closing operation of the drive mechanism 98.

For example, the alarm device 960 can take three positions, which are indicated by indicators related to the actual state of the springs 380: the springs are not loaded, the springs are loaded, or the springs are loaded and ready to close circuit breaker 1.

The kinematic chain of the drive mechanism 98 further comprises a toggle switch, made using the first pair of connecting rods 330 and the second pair of connecting rods 340, which are connected to each other by the axis 990 of the rolling. The rollers 350 are mounted at opposite ends of the rolling axis 990, which, when operational, interacts with the swing arm 800.

The ends of the pairs of connecting rods 340 are functionally connected to the hook 320, and this hook 320, in turn, is functionally connected to the rotating element 1011, which is pivotally connected between the side sides 310 of the frame.

For example, a pair of connecting rods 340 is attached to the hook 320 via a plate 1010 having at least a first portion pivotally connected to the ends of the connecting rods 340 and a second portion operably connected to the rotary member 1011.

During the manipulation of the closure of the circuit breaker 1, a pair of connecting rods 330 is configured to functionally interact with one or more elements of the drive shaft 53, so that it causes a corresponding rotation of the drive shaft 53 and connects the stationary and movable contacts 60, 70 of the poles 20A, 20B and 20C. For example, a pair of connecting rods 330 can be attached to the central lever 54 of the drive shaft 53, shown in figure 10.

Using the closure button 1510 (“1” or “On”), the closure manipulation can be controlled. To this end, the drive mechanism 98 includes a shaft 160 circuit, which is pivotally connected to the sides 310; however, by means of its action, the closure button 1510 is configured to cause rotation of the shaft 160. This rotation acts on the locking lever 180 so as to release it from the cam disc 890, thereby causing a sudden extension of the preloaded springs 380.

This extension is such as to cause a corresponding oscillation of the swing arm 800, during which the swing arm 800 pushes the rollers 350 of the pivot axis 990. The driving force exerted by the swing arm 800 pulls the toggle switch, that is, aligns the pair of connecting rods 330 and 340; in particular, the offset of the pair of connecting rods 330 is such as to cause a corresponding rotation of the transmission shaft 53 about its axis of rotation 601.

This rotation of the drive shaft 53 acts on the pair of connecting rods 12 of the poles 20A, 20B and 20C by means of the respective levers 54, thereby leading to a connection between the fixed and movable contacts 60, 70.

The rotation of the drive shaft 53 in order to connect the fixed and movable contacts 60, 70 together causes compression of the trip springs 2000, which are functionally connected directly to the shaft 53, for example, using levers 2001, and with the drive mechanism 98, for example, with one from the sides 310.

The force exerted by the compressed disconnecting springs 2000 on the transmission shaft 53 is applied to the rotating member 1011 by the toggle switch and the plate 1010. However, although the circuit breaker 1 is kept closed, the rotation of the member 1011 is prevented by a hook 320 that engages with the engaging member 360, which is located in a locked state. Thus, the drive shaft 53 is blocked, and the total force exerted on it is applied by means of the rotating element 1011 to the bearing sides 310 of the frame.

The engaging member 360 is mounted so that it can rotate between the sides of the frame 310 and is in a locked state on the rotating trip shaft 1501, which prevents it from moving.

At the beginning of the trip operation of the circuit breaker 1, the trip shaft 1501 is rotated so as to remove its support for the engaging member. Such rotation of the trip shaft 1501 may be caused by pressing the closure button 1500 (“0” or “Off”) or by automatically interfering with one or more circuit breaker 1 devices, such as a protection and / or control unit 99 or a trip coil 91D.

When the support of the engaging member 360 is removed due to the trip shaft 1501, the engaging member 360 is released for subsequent rotation by the action of its own bias spring, thereby unhooking it from the hook 320.

After this disengagement, the hook 320 and the rotating member 1011 are also released to rotate under the action of the force exerted on the drive shaft 53 by breaking springs 2000.

After the element 1011 rotates, the plate 1010 causes the toggle switch to bend, resulting in misalignment between the pairs of connecting rods 330, 340. This toggle switch bend determines a corresponding sudden rotation of the drive shaft 53, which causes the stationary and movable contacts 60, 70 to separate the poles 20A, 20B and 20C, thereby opening the circuit breaker 1. This movement of the toggle switch elements to open the circuit breaker 1 is guided by a spring 1540, which is connected to the frame of the drive mechanism 98.

The protection and / or control unit 99 is preferably an electronic relay with a more or less complex design and function depending on the application requirements.

For example, you can use a simplified block 99 protection and / or control, which would provide a minimal but adequate level of protection. Such a device, commonly referred to as “electronic protection” and is a type well known in the art (and therefore not described in detail here), electronically simulates the effect of an electromagnetic brake, which is located near the electrodes 13 and 14 of the poles 20A, 20B and 20C and configured to act with a drive mechanism 98 in order to open the circuit breaker 1 in the event of dangerous short circuits.

Thus, the switching device according to the present utility model assumes a disconnector configuration, which, unlike the one commonly used in prior art disconnectors, is equipped with a special protection unit. However, it is understood that instead of simple electronic protection, a protection and / or control unit 99 can be provided, that is, a device that is equipped with external adjustments and indications available to the user, as is usual in the case of an automatic type switch 1, as illustrated in the figures.

However, it is clear that instead of a simple “electronic protection”, it is possible to use the protection and / or control unit 99, that is, a device that is equipped with external adjustments and indications accessible to the user, as is usually the case for an automatic type switch 1, as shown in the figures .

With particular reference to FIG. 14, the user interface of the protection and / or control unit 99 may be a panel 991 comprising a plurality of control levers 992, which are commonly referred to as “on / off switches,” with which the operator can adjust the protection and / or control unit 99 .

With reference to the protection and / or control unit 99, which is shown in FIG. 15, the user interface may include a display 993 that provides easy visualization and selection of menus, functions, parameters and input or output data from the protection and / or control unit 99.

The display 993 may produce screen images according to graphically simple visualization methods, such as the function menu shown, for example, in Figure 16. Alternatively, the display 993 may produce screen images according to graphically more complex visualization methods, such as the screen shown in Figure 17 where the functional menu and various indications of the electrical parameters measured inside the circuit breaker 1 are displayed; moreover, figure 18, for example, illustrates detailed information on the display 993 of the measured voltages and currents, where the graphics used reproduces an analog meter.

In order to provide greater functionality and possibility for the user, for example, with respect to adjusting the protection and / or control unit 99, the display 993 will preferably be a “touch screen”.

In addition to the display 993, the user interface of the protection and / or control unit 99 may include one or more communication ports 994, for example, 113 V universal serial bus connectors.

The power source for the protection and / or control unit 99, as well as the sensor for detecting currents necessary for detecting, for example, a short circuit, are implemented by the above-described converters 700. Alternatively, the power supply to the protection and / or control unit 99 can be provided from auxiliary or external power supplies.

In practice, the protection and / or control unit 99 analyzes some of the operating electrical parameters that are detected by, for example, transducers 700, and in the event of failure or malfunction sends a signal to the trip coil connected to the protection and / or control unit 99 .

The protection and / or control unit 99 may preferably be operative in communication with a processing unit external to the circuit breaker 1, such as a computer. Inside such an external unit, software is installed that allows you to act as a tool for programming, loading and unloading data to and from the protection and / or control unit 99.

With reference to figures 5-6, auxiliary devices 91A-91D can be functionally positioned according to the “plug and play” or “click on” settings within the corresponding footprints 231A, 237B, 232A, 232B of housing 2. This definition implies that auxiliary devices 91A, 91B, 91C, 91D can be easily installed by simply placing them within the aforementioned seats 231A, 231B, 232A, 232B without the need for additional electrical or mechanical connections.

To this end, the trip devices 910 preferably comprise first definite-shaped edges 901 that are intended to be mechanically connected (via a reciprocal insertion or snap-fit) to respective second defined-shaped edges 2321 formed within the wall of the corresponding seat 232B, and first electrical contacts 902. which are intended for electrical connection in accordance with the plug / socket method or vice versa, with the corresponding second electrical contacts 2322 located enes within the respective seats 232 V.

Likewise, auxiliary contacts 91B may include third edges 903 of a specific shape that are designed to mechanically connect (via a mutually reversible insert or snap-fit) to respective fourth edges 2311 of a specific shape located within the walls of the seat 231 B, and electrical connectors 904.

To facilitate installation within its respective seat 231A, the spring loading motor 91A may advantageously comprise a connecting axis 905 which is for mechanical insertion (snap-fit) within the centering bracket 2313, which is located within the corresponding seating 231A for placement, and section 906 a connection of a particular shape that is intended to be mechanically connected by means of a suitable fastening means (e.g. screw) together with a bearing wall 2312, which sets the boundaries of the place to accommodate the engine 91A.

One end of the spring shaft 390 of the drive mechanism 98 protrudes inside the seat 231A to accommodate the motor 91A in order to provide a connection directly to the latter in accordance with one of the walls 907 of a certain shape.

With reference to figures 1-6, the front wall 3 of the circuit breaker 1 contains a first section 31 of a certain shape and a second section 32 of a certain shape, which are configured to close, directly on the front wall 3, spaces for placement, which are limited by sections 22 and 23, respectively housing 2.

Such sections 31 and 32 of a certain shape are mechanically detachable relative to each other.

The sections 31, 32 of a certain shape are preferably mechanically connected to each other so that each section 31 of a certain shape can only be removed from the front wall 3 after removing the section 32 of a certain shape.

A portion of a certain shape is preferably implemented using a cover 31; by means of known fastening means, the cover 31 can be detachably attached to the structural component associated with the drive mechanism 98. The cover 31 can, for example, be attached to the support bracket 909 shown in FIG. 3.

The cover 31 includes a first hole 51, which is configured to provide direct access in the space for placement, within which is located the lever 97 of the manual control. The operator can easily manually control the control lever 97 without removing any part of the front wall 3.

The cover 31 contains secondary openings 52, which are adapted to accommodate command buttons 1500 and 1510 of the drive mechanism 98 so that without removing any part of the front wall 3, the lower parts 100 and 1510 can protrude from the front wall 3 so that an operator could work with them.

Additional secondary holes 52 are configured to accommodate the signaling devices 530 and 960 of the drive mechanism 98 so that without removing any front wall 3 they are visible from the front outside the circuit breaker 1.

Section 32 of a certain shape contains: a frame 325 of a certain shape, which at least partially limits the edges of the front wall 3; and first and second cover panels 321, 322, which are firmly attached to the frame 325 of a certain shape.

The cover panels 321, 322 are arranged to close the spaces for placement, respectively, which are defined by the seats 231A, 231B, 232A and 232B of the section 23 of the housing 2.

Therefore, a portion 32 of a certain shape forms a lockable structure that can be detachably attached to the front wall 3 by means of known fastening means, for example, by means of screws or mutual engagement, snap-fastening or similar mechanical connections.

The frame 325 of a certain shape and the cover panels 321, 322 are positioned so as to limit the opening 324 within which the cover 31 of the front wall 3 is located when it is in its normal operating position.

The lower portion 325 of the frame 325 of a certain shape is mechanically connected to the corresponding stiffeners located on the lower part of the cover 31 so that it can be removed from the front wall 3 after removing the frame 325 of a certain shape.

The second portion 32 of a certain shape of the front wall 3 comprises a third cover panel 323, which can be removably connected to the frame 325 of a certain shape by means of known fastening means, for example, by means of screws or inserts, snap-fit or similar mechanical connections.

The cover panel 323 is advantageously positioned so as to close the placement space defined by section 24 of the housing 2.

With reference to FIG. 2, when the protection and / or control unit 99 is located inside the accommodating space bounded by section 24, it is hereinafter accessible through an opening 326 bounded by a lid 31 with cover panels 321, 322 and a frame 325 of a certain shape.

The hole 326 is closed by the cover panel 323 in the case when this panel is connected in working condition to the frame 325 of a certain shape. A cover panel 323 may be arranged to support the user interface means of the security and / or control unit 99.

Preferably, in order to hold one or more accessory devices 91A, 91B, 91C and 91D within its operating position, one or more of the restriction covers 96 may be operatively connected to the seats 231A, 231B, 232A and 232B for placement. For example, in Figures 3-5, the restriction cover 96 is operatively connected to the 232 V seats that are designed to receive the trip units 91D in such a way that they can move back and forth between the gearing and uncoupling positions of the trip unit 91D. Preferably, an indication is mounted on the limit cover 96, such as an alphanumeric indication to identify the type of trip unit 91D that is located within the corresponding location 232B.

As expected, the front wall 3 of the housing 2 preferably comprises a modular structure that allows these spaces to be divided that are not intended for operator access, thereby resulting in a marked increase in safety.

With reference to figures 1-5, the first electrical terminal block 801 (“terminal block”) is made in accordance with the upper wall 8 of the housing 2, located, in particular, between the block formed by the poles 20A, 20B and 20C and the block 99 of the protection and / or management.

The protection and / or control unit 99 and / or various auxiliary devices 91A-91D may be electrically connected to terminal block 801 so that they can exchange, via terminal block 801, data and / or signals and / or commands with devices, which are external to circuit breaker 1 and / or could be powered by an independent power source.

With reference to figure 22, in the case of a withdrawable circuit breaker 1, the second electrical terminal block 1100 is made in accordance with the upper wall 1004 of the housing 1000.

When the housing 2 is inserted into the housing 1000, the second terminal block 1100 can then be electrically connected to the first terminal block 801. In particular, the sliding contacts 802 are connected to and protrude from the first terminal block 801; the sliding contacts 802 are adapted to be inserted and connected to the corresponding sliding contacts (not visible in FIG. 22), which are connected to the second terminal block 1100.

The protection and / or control unit 99 and accessories 91A-91D, which are housed inside the housing 2, can thus be electrically functionally connected to various devices and / or units external to the housing 2, or electrically connected to a second terminal block 1100 .

For example, on the second terminal block 1100 there are a plurality of recesses 1101 for mounting on the outside of the housing 2 a plurality of auxiliary devices of the circuit breaker 1. In particular, these accessories are mounted on said terminal block 1100 in accordance with the respective recesses 1101, and each of them preferably contains its own electronics control unit.

In particular, one or more of the recesses 1101 is configured to receive an assembly of assistive devices 4 00 (hereinafter referred to for simplicity as “assembly 400”), which forms a single modular block of assistive devices (which is hereinafter referred to for simplicity as “ accessories ”.

For example, with reference to figures 23-26, assembly 400 comprises first, second, third, and fourth accessories 400A, 400B, 400C, and 400D.

With reference to Figures 24-25, accessory 400A comprises an insulating outer casing 402A that has at least a lower surface 4100A, an upper surface 4200A, and a side surface 4300A. Each of the accessories 400B, 400C, and 400D also has its own insulating outer casing 402B, 402C, and 402D having at least one pair of opposing side surfaces 4100B-4300B, 4100C-4300C, and 4100D-4300D.

In particular, accessory 400B surface 4100B is connected to accessory 400A surface 4300A by interaction between respective mechanical means 440A and 440B, accessory 400C surface 4100C is mechanically connected to accessory 400B surface 4300B by interaction between corresponding mechanical means 460B and 440C, and accessory surface 4100D mechanically 4000 connected to surface 4300C of accessory 400C through interaction between respective means 460C and 440D.

Accessory 400A comprises mechanical coupling means 450A, which is defined in accordance with the bottom surface 4100A in order to provide mechanical connection with appropriate mechanical coupling means, defined in accordance with location 1101. Accessory 400A also includes safety means 490, which mechanically locks it in place 1101.

Accessory 400A comprises electrical connection means 410A and 420A, which are preferably a type of plug or socket. Electrical connection means 410A, 420A illustrated in Figures 23-26, for example, are a type of outlet.

In particular, electrical connection means 420A is positioned on the upper surface 4200A to provide electrical connection to elements or components that are external to assembly 400 and circuit breaker 1, such as a device connected to communication or power distribution buses.

The electrical connection means 420A comprises contacts for implementing a power bus through which the accessory accessory 400A can receive external electrical power.

The electrical connection means 420A further comprises communication contacts for implementing a communication bus, such as a CAN bus (“local control network”), by means of which the auxiliary device 400A can exchange data and / or signals external to the assembly 400 and the circuit breaker 1.

Means 410A electrical connection is positioned on the lower surface 4100A, to provide electrical connection with the second terminal block 1100 circuit breaker 1; however, this means 410A contains communication contacts for implementing a communication bus, such as a CAN bus, by which the auxiliary device 400A can exchange data and / or signals with the protection and / or control unit 99 and / or auxiliary devices 91A-91D, which are electrically connected to the first terminal block 801.

The electrical connection means 410A further comprises contacts for implementing a power bus through which the auxiliary device 400A can power elements external to the housing 2 that are connected to the first terminal block 801, the protection and / or control unit 99, or one or more of the auxiliary devices 91A-91D using the power available at the input to the electrical connection means 420A.

Each of the accessories 400A, 400B, 400C and 400D contains electrical connection means 430A, 410B and 430B, 410C and 430C, 410D and 430D, which are defined according to the type of connection of the plug or socket to provide interconnection with the electrical connection means of other auxiliary devices of the assembly 400 .

For example, with reference to FIGS. 24-25, outlet-based electrical connection means 430A are mounted on surface 4300A of accessory 400A for connecting to plug-based electrical connection means 410B that is mounted on surface 4100B of accessory 400B; socket-based electrical connection means 400B mounted on surface 4300B for connecting to a plug-based electrical connection means 430B mounted on surface 4100C of accessory 400C; socket-based electrical connection means 430C is mounted on a surface 4300C for connecting to a plug-based electrical connection means 410D that is mounted on an accessory 400D surface 4100D.

The electrical connections between accessories 400A, 400B, 400C and 400D, implemented by interconnecting the means 430A-410B, 430B-410C and 430C-410D of the electrical connection, are designed to provide a power supply bus through which the 400A can provide power to others accessories 400B, 400C and 400D using the power supply to the input of its electrical connection means 420A.

In addition, the electrical connections between accessories 400A, 400B, 400C and 400D are designed to implement a communication bus, such as a CAN bus, through which accessories 400A, 400B, 400C and 400D can exchange data and / or signals with each other.

With reference to Figures 23-25, each of the accessories 400B, 400C and 400D contains additional means 420B, 420C and 420D of electrical connection, either a plug type or a socket type, which are defined in accordance with the respective surfaces 4200B, 4200C and 4200D of the corresponding housing 402B , 402C and 402D. Such electrical connection means 420B, 420C and 420D are adapted to be connected to communication buses that are external to assembly 400 and to circuit breaker 1, for example, Ethernet, Modbus and PROFIBUS communication protocol buses, through which each of the accessories 400B, 400C and 400D can exchange data and / or signals with external devices.

As shown, for example, in Figures 23-25, one or more accessories 400A, 400B, 400C, and 400D may comprise appropriate visual signaling means 480, for example, LEDs, to visually indicate their status.

One or more of the accessories 400B, 400C, 400D may include microswitches, not shown in FIGS. 23-26, that are operably connected to a drive mechanism 98 located inside the housing 2 so that it can signal an open or closed state of the circuit breaker 1 in the inserted position, externally with respect to the housing 1000.

In addition to this, one or more accessories 400B, 400C and 400D may comprise manually operated lever 470 switches (“470 on / off switches”).

The use of the assembly 400 described (or accessories having an electronics container) in connection with the second terminal block 1100 is particularly advantageous.

In particular, the operation of removing the housing 2 from the housing 1000 does not require any intervention related to the assembly 400, which remains connected to the second terminal block 1100, thus continuing to receive power and exchange data and / or external signals.

This means that accessories 400A-400D can continue processing and / or maintain stored data, information and configuration data, such as configuration data for the protection and / or control unit 99, obtained or processed before removing the housing 2 from the housing 1000.

This data, information and configurations are then automatically made available when the housing 2 is once again inserted into the housing 1000.

Claims (14)

1. An electrical switching device (1) for low voltage circuits, characterized in that it comprises a main body (2) having: - the first section (21), which defines the first enclosing space for one or more electric poles (20A, 20B, 20C), each of these electric poles containing at least one fixed contact (60) and a corresponding movable contact (70), which can be connected / disconnected to / from each other; - the second section (22), which defines the second enclosing space for the drive mechanism (98), functionally connected to the drive shaft (53), and the drive shaft (53) is functionally connected to the movable contact (70) of each pole (20A, 20B, 20C ) in order to connect / disconnect said movable contact to / from the corresponding fixed contact (60); - a third section (23), which defines a third enclosing space for one or more first auxiliary devices (91a, 91b, 91c, 91d) of the switching device; - a fourth section (24), which defines a fourth enclosing space for the protection and / or control unit (99) of the switching device; moreover, said switching device comprises a support device (600) for the drive shaft (53), which is connected so that it can move to the wall (6) of the said main body (2), and said drive shaft (53) is functionally connected with the support device (600) so as to rotate about a rotation axis (601) with respect to said wall (6) and with said supporting device (600), and said switching device also comprising means (620) for adjusting at least the position of the actuator in la (53) relative to said wall (6). 2. An electric switching device (1) according to claim 1, characterized in that said supporting device (600) further comprises anti-bounce means (630), which is configured to interact with said drive shaft (53) and prevent rebound of said movable contact ( 70) towards the corresponding fixed contact (60) when the movable contact (70) moves in order to separate from the corresponding fixed contact (60). 3. An electric switching device (1) according to claim 1, characterized in that said adjustment means (620) is arranged to simultaneously adjust the position of the drive shaft (53) and the support device (600) relative to said wall (6). 4. An electric switching device (1) according to claim 1, characterized in that said main body (2) comprises a front wall (3) having at least one first portion (31), which is configured to close the space for placement, defined using said second section (22), and a second section (32), which is configured to close spaces for accommodations defined using said third and fourth sections (23, 24), said first and second sections (31, 32 ) have the ability to mechanically Connections from each other. 5. An electrical switching device (1) according to claim 4, characterized in that said third section (23) comprises first seats (231A, 231B) and second seats (232A, 232B) that define the first set and the second set, respectively, third enclosing spaces for said first auxiliary devices (91A, 91B, 91C, 91D), said second section (32) comprising: - a frame (325) that defines at least partially the edges of said front wall (3); - the first closing panel (321) and the second closing panel (322), which are firmly attached to the said frame (325) and are configured to close the third enclosing spaces, respectively, determined using the aforementioned first and second seats (231a, 231b, 232a 232c); and - a third closing panel (323), which is removably attached to said frame (325) and is suitable for closing said fourth enclosing space. 6. An electric switching device (1) according to claim 5, characterized in that one or more of the limiting covers (96) are operatively connected to one or more of the said first seats (231A, 231B) and / or to one or more of the aforementioned second seats (232A, 232B) in order to maintain in position one or more of the aforementioned first auxiliary devices (91A, 91B, 91C, 91D). 7. An electrical switching device (1) according to claim 1, characterized in that one or more of the first mentioned auxiliary devices (91A, 91B, 91C, 91D) are positioned inside the said third enclosing space by the “plug and play” or “snap” installation method " 8. An electric switching device (1) according to claim 1, characterized in that each of the said poles (20A, 20B, 20C) contains a shell (30) formed by two half-shells (30A, 30B), connected together and containing in themselves at least said fixed contact (60) and corresponding movable contact (70). 9. An electrical switching device (1) according to claim 8, characterized in that inside the shell (30) of each pole (20A, 20B, 20C) a seat is provided (240), which accommodates a converter (700), said converter (700) comprises a first closed magnetic circuit (710), which is configured to surround the primary wire (14) of the pole (20A, 20B, 20C), a secondary winding (712) having on its core a portion of the first magnetic circuit, and a second magnetic circuit (720), which is structurally separated from and functionally associated with the first magn total circuit in such a way that at least part of the main magnetic flux, which is generated in the first magnetic circuit with the help of the current circulating in the primary wire, is absorbed by the second circuit in proportion to the current value. 10. An electric switching device (1) according to claim 8, characterized in that the shell (30) of each pole (20A, 20B, 20C) also contains an arc chamber (80) containing a body (82), within which many plates are installed (81) for an arc discharge, which are located together, and an element (85) from a material that produces gas when heated. 11. An electric switching device (1) according to claim 1, characterized in that said drive mechanism (98) comprises at least: - a kinematic chain comprising at least a swing arm 800 and a toggle switch made with a first pair of connecting rods 330 and a second pair of connecting rods 340 operably connected to each other, the kinematic chain being functionally connected to said drive shaft (53) in this way to cause rotation of the drive shaft about its axis (601) of rotation; - a frame (310) configured to support at least one kinematic chain: - one or more elastic elements (380), which are configured to provide the kinematic chain with the energy that is required to connect / disconnect the movable contact (70) of each pole (20A, 20B, 20C) to / from the corresponding fixed contact (60) by rotation of said drive shaft; moreover, the elements of the kinematic chain are functionally connected to each other and / or to the said frame through the pin connecting means. 12. An electrical switching device (1) according to claim 1, characterized in that it comprises a first electrical terminal block (801), which is electrically connected to said protection and / or control unit (99) and / or to at least one of said one or more first auxiliary devices (91a, 91b, 91c, 91D). 13. An electrical switching device (1) according to claim 12, characterized in that it comprises an additional supporting body (1000), into / from which the main body (2) can be inserted / removed, said additional supporting body comprising a second electrical terminal a block (1100) that can be functionally connected to said first electrical terminal block (801) when said main body (2) is inserted into said additional supporting body (1000). 14. An electrical switching device (1) according to claim 13, characterized in that the assembly (400) of additional auxiliary devices (400A, 400B, 400C, 400D) is connected to said second terminal block (1100) and contains at least a first additional auxiliary an apparatus (400A) having: first electrical connection means (410A) configured to electrically connect to said second terminal block (1100); second electrical connection means (420A) adapted to be electrically connected to respective devices external to the switching device (1); and third electrical connection means (430A) configured to electrically connect to a second auxiliary accessory device (400B) belonging to said assembly (400).

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