EP2333804B1 - Dispositif de coupure à indicateur de soudure des contacts - Google Patents

Dispositif de coupure à indicateur de soudure des contacts Download PDF

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Publication number
EP2333804B1
EP2333804B1 EP20100354076 EP10354076A EP2333804B1 EP 2333804 B1 EP2333804 B1 EP 2333804B1 EP 20100354076 EP20100354076 EP 20100354076 EP 10354076 A EP10354076 A EP 10354076A EP 2333804 B1 EP2333804 B1 EP 2333804B1
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EP
European Patent Office
Prior art keywords
contact
arm
movable
contact arm
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20100354076
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2333804A1 (fr
Inventor
Marie-Laure Michaux
Jean-Pierre Duchemin
Stéphane FOLLIC
Marc Paupert
Cédric BRICQUET
Bruno Reymond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from FR0905990A external-priority patent/FR2953979B1/fr
Priority claimed from FR0905987A external-priority patent/FR2953986B1/fr
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2333804A1 publication Critical patent/EP2333804A1/fr
Application granted granted Critical
Publication of EP2333804B1 publication Critical patent/EP2333804B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/046—Means for indicating condition of the switching device exclusively by position of operating part, e.g. with additional labels or marks but no other movable indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/58—Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition

Definitions

  • the invention relates to the field of electrical installation protection devices, generally low voltage. These devices are generally intended to be mounted in terminal distribution electrical panels.
  • the French patent application FR2649826 discloses an electric circuit breaker provided with a control mechanism comprising a reset lever operable between extreme close and open positions, a trip mechanism provided with a trip lever acting on contacts of said circuit breaker, and signaling means for indicating the welding of said contacts cooperating with said trigger lever for stopping the handle in an intermediate position when said contacts are in a closed-welded state.
  • a disadvantage of this circuit breaker is that the signaling means for indicating the closed-welded state of the contacts are activated through means of the trigger mechanism remote from said contacts.
  • the active part of the engagement lever is coupled with the contact arm through the contact carrier.
  • the contact carrier is essentially formed by a stirrup in which the contact arm and the second arm of the engaging lever are engaged.
  • the manual resetting device comprises lockout means intended to cooperate with a padlocking accessory to lock said cutoff device, said padlocking means not being accessible when said manual reset member is in the position.
  • the overtaking distance, averaged over the portion of the length of the contact arm covered by the magnetic reinforcement circuit is between 0.1 and 2 millimeters.
  • the overtaking distance, averaged over the portion of the length of the contact arm covered by the magnetic reinforcement circuit is between 0.5 and 1 millimeter.
  • the magnetic reinforcement circuit has a dimension defined in a direction parallel to the length of the contact arm of between 20 and 35 millimeters.
  • the magnetic reinforcement circuit has a defined dimension in a direction perpendicular to the length of the contact arm of between 4 and 7 millimeters.
  • the contact arm is formed by a blade, said blade being arranged in such a way that its two largest faces are substantially opposite the two branches of the "U" formed by the profile of the associated magnetic reinforcement circuit. to said contact arm.
  • the overtaking distance is greater than or equal to a wear wear of contact pads in which the main contacts are formed.
  • the magnetic reinforcement circuit interacts directly with the contact arm with which it is associated, to reinforce the contact pressure force when a short-circuit fault current flows in said contact arm.
  • the cut-off device 1 is enclosed in a housing provided with two flanges 11 and 12, each of them carrying major faces 14, 15 of said device. It is possible to qualify these two flanges respectively of housing and lid.
  • the main faces 14, 15 are substantially parallel to each other.
  • the cut-off device 1 comprises a rear portion provided with fixing means 17A and 17B of said device on a support rail in an electrical panel. In the same electrical panel, several electric breaking devices of this type can be fixed on the same support by means of the fastening means 17, next to each other, by joining them by their main faces 14, 15.
  • the distance between the main faces 14, 15 is normalized, substantially equal to the number of poles multiplied by a normal polar distance of 9 millimeters, in this case the distance between the faces 14, 15 is substantially equal. or very slightly less than 18 millimeters.
  • Cutoff devices of this type have a standardized profile that allows them to be fixed on a support having the same standardization. Thus, the standardized distance and profile give the cut-off device 1 a modular character.
  • the cut-off device 1 comprises connection faces 21, 22, 23 provided with openings 25, 26, 27, 28 allowing access to connection terminals.
  • the cut-off device 1 is bipolar and has a phase input terminal 31 and a phase output terminal 32 of a power or phase circuit, as well as a neutral input terminal 34 and a voltage terminal. neutral output 35 of a neutral circuit.
  • the terminals 31, 32 are respectively housed behind the openings 25, 26.
  • the terminals 34, 35 are respectively housed behind the openings 27, 28.
  • the openings 25-28 for access to these terminals open onto the connection faces 21, 22 the farthest from the device.
  • the device is also provided with two control terminals 37, 38, accessible via openings 29, 30 opening onto the connection face 23.
  • the cut-off device 1 comprises a front part provided with a reset push-button 40.
  • the cut-off device also comprises a second manual release button 42.
  • These two buttons 40 and 42 are accessible to the user when the device cutoff is arranged in an electrical panel. In other embodiments not shown, these two buttons could be replaced by a joystick to ensure, at the same time, both reset and manual trigger functions.
  • An indicator 44 is arranged next to the reset button 40 to indicate whether the cut-off device is armed, in which case the indicator returns a red color, or if the cut-off device is triggered, in which case the indicator returns a green color.
  • the phase circuit of the breaking device 1 extends between the phase input terminal 31 and the phase output terminal 32.
  • the neutral circuit extends, meanwhile, between the input terminal of neutral 34 and the neutral output terminal 35 of a neutral circuit.
  • the phase circuit comprises tripping means 41 electrically connected to a phase input terminal 31 and represented in greater detail on the figure 3 . In other embodiments, the tripping means could be electrically connected to the phase output terminal 32.
  • These tripping means comprise thermal tripping means 43 and magnetic tripping means 45 connected in series on the circuit. phase.
  • These tripping means 41 act indirectly on movable main contacts 47, 48 respectively of the phase circuit and the neutral circuit.
  • a trigger chain comprising a tripping mechanism 51 free trigger, a control actuator 53 electrically powered by rectifying means 55 and a second mechanism 57 acting on the movable contacts 47, 48.
  • free triggering mechanism as used in the cutoff devices of the prior art means a mechanism capable of being activated independently of the operating member, in this case the reset button .
  • the reset button a mechanism capable of being activated independently of the operating member, in this case the reset button .
  • the trigger mechanism 51 can also act through the button 40 for resetting the cutoff device, and the second button 42 for its manual release.
  • This triggering mechanism 51 cooperates with the control actuator 53 through an internal switch 59, 169 to the cutoff device.
  • internal switch means any type of switching means, whether made by mechanical or electronic components.
  • the internal switch 59, 169 comprises a movable control contact 59, for example a movable contact bridge or a flexible blade described below. In this way, during an electric fault trip or a manual trip using the second button, the control contact 59 opens to indirectly open the movable contacts 47, 48.
  • the rearming of the device closes the control contact 59, which enables control by applying a suitable voltage between the terminals 37 and 38 to close the movable contacts 47, 48. absence of voltage between the control terminals 37 and 38, the movable contacts remain in the open position.
  • the input of the rectifier means 55 supplying the control actuator 53 is connected to an alternating voltage supply, not shown, via the two control terminals 37, 38.
  • this power supply rectifier means 55 could be provided directly inside the cutoff device through a connection with the phase and neutral circuits.
  • the cut-off device would not comprise control terminals, and the control of said device, in particular of the control actuator 53, would be via a communication interface associated with a control electronics arranged. inside said device. This communication interface may be wired or non-wired, for example of the radio frequency type or type close magnetic field couplings.
  • the cut-off device shown in figure 2 is particularly well suited to be installed downstream of a current limiting device.
  • the control actuator 53 being arranged in the triggering chain makes it possible to ensure, both and autonomously, the opening of the main contacts in the presence of an electrical fault, such as a short circuit or overloading, and switching said main contacts from a local or remote control command.
  • the control actuator 53 is disposed between the movable main contacts 47, 48 and the tripping means 41, so that the opening of said movable contacts 47, 48 following a short circuit or following an overload or still following a command order is made necessarily through this control actuator.
  • the response time to open the main movable contacts 47, 48 can to be controlled or even increased.
  • free triggering mechanism as used in the cutoff devices of the prior art means a mechanism capable of being activated independently of the operating member, in this case the reset button.
  • the reset button a mechanism capable of being activated independently of the operating member.
  • the opening delay of said cut-off device makes it possible to wait for the upstream limiting device to limit or even cancel the short-circuit current before opening the main movable contacts 47, 48.
  • the thermal and electrodynamic stresses seen by the main contacts 47, 48 are much lower than in conventional devices, where the main contacts 47, 48 actively participate, opening early on a high current, at the breaking of the short-circuit current.
  • the wear of the main contacts during a short-circuit is small, given their delayed opening with respect to at the appearance of the peak of current.
  • the short circuit protection function of the breaking device can thus be simplified. For example, the presence of a breaking chamber in this cut-off device is no longer mandatory.
  • the absence of direct link between the movable main contacts 47, 48 and the trigger mechanism 51 provides a simplified and more robust trigger chain.
  • the breaking stresses are not experienced by the trigger mechanism 51, unlike the circuit breakers of the prior art, which greatly reduces the constraints in terms of robustness, impact resistance and resistance to hot projections, parts of the mechanism.
  • the thermal tripping means 43 are essentially constituted by a bimetal, that is to say by two blades of different metals or alloys having different coefficients of expansion.
  • the bimetal comprises a free end 61 electrically connected to the movable contact 47 via an electrically conductive braid 62 ( figure 4 ).
  • the circulation of an overload current in the bimetallic strip 43 causes a heating and a deflection of this free end 61. This deflection of the bimetallic strip 43 is represented by an arrow referenced 63.
  • this deflection of the free end 61 of the bimetal allows to activate the opening of the movable main contacts 47, 48 of the cut-off device via the trigger mechanism 51.
  • the fixed end 65 of the bimetal 43 is electrically connected to the magnetic tripping means 45.
  • the thermal tripping means that is essentially the bimetallic strip 43, thus allow tripping in the presence of relatively slow electrical faults of moderate intensity, such as overloads. .
  • the magnetic tripping means 45 comprise a coil 71 surrounding a plunger disposed in the sleeve 73 which moves when a current flows in said coil.
  • the tripping means also comprise a ferromagnetic carcass 79 for optimizing the circulation of the magnetic flux generated by the flow of current in the coil.
  • An end 75 of the coil 71 is directly welded to the ferromagnetic carcass 79 so that the current flowing in the coil also flows in a portion of said carcass. This end 75 of the coil 71 is thus electrically connected to the fixed end 65 of the bimetallic strip 43 via a part of the ferromagnetic carcass 79 forming a bimetallic support 76.
  • the bimetallic support 76 and the carcass constitute a single piece, made of ferromagnetic material.
  • the bimetallic support advantageously fulfills two functions, namely a support function for embedding the bimetallic strip 43 and a function of channeling the magnetic flux produced by the coil 71.
  • the bimetallic strip 43, the bimetallic support and the coil 71 are thus mounted directly in series in the current line.
  • the other end 77 of the coil 71 is connected to the phase input terminal 31 ( figure 4 ).
  • the plunger is mounted in its sleeve 73 to move in translation between a rest position and an extended position.
  • the plunger passes, on one side, the ferromagnetic carcass 79 through an opening 81.
  • One end of the plunger core comprises a latching ring 83 cooperating with the trigger mechanism to activate the opening of the movable main contacts 47, 48 through the movable control contact 59, when the current flowing in the coil 71 exceeds a magnetic trip threshold.
  • An adjusting spring 85 keeps the plunger in the rest position when the current in the coil 71 is below the tripping threshold.
  • This adjustment spring 85 is calibrated to maintain the plunger core in its rest position as long as the current is below the magnetic trip threshold.
  • the adjustment spring 85 acts on one side on a stop formed by the attachment ring 83 disposed on the free end of the plunger core, and on the other side on the edges of the opening 81 of the ferromagnetic carcass 79.
  • the magnetic tripping means 45 thus enable tripping in the presence of rapid or instantaneous electrical faults and of high intensity, for example greater than ten times the nominal current, such as short-circuits.
  • the ferromagnetic carcass 79 of the magnetic tripping means 45 is formed in a folded metal strip 86.
  • a first portion 87 of the strip 86 surrounds the coil 71 and allows the circulation of a magnetic flux.
  • This first part 87 has a profile in the shape of a "C”.
  • a second portion 89 of the strip 86 is used to fix, by welding, the fixed end of the bimetallic strip 43.
  • this second portion 89 of the strip makes it possible, not only to support the fixed end of the bimetallic strip, but also to pass the current between said bimetallic strip 43 and the coil 61 of the magnetic tripping means 45.
  • the structure of the triggering means is thus simplified.
  • the thermal tripping means 43 comprise a set screw 88 for adjusting the thermal tripping threshold of the bimetal.
  • this adjusting screw is mounted directly on the folded metal strip 86, so that by screwing it, it comes to tighten a bend 90 formed towards the fixed end 65 of the bimetal by the folded metal strip 86 In this way, the tightening of the screw makes it possible to move the free end of the bimetallic strip and bring it closer to or away from the triggering mechanism.
  • Such mounting of the adjusting screw 88 directly on the thermal tripping subassembly and independently of the housing of the device is particularly advantageous because it improves the accuracy of the adjustment and limit drift over time.
  • the tripping means including the thermal tripping means 43 and the magnetic tripping means 45, form a single independent subassembly that can be assembled in the breaking device as an independent industrial block.
  • the thermal tripping means 43 and the magnetic tripping means 45 form a same tripping unit of the breaking device.
  • This configuration as a subassembly or removable trigger unit facilitates assembly of the cutoff device.
  • the thermal tripping means 43 and magnetic 45 are arranged side by side in the housing in the same plane substantially parallel to the connection faces 21-23.
  • the thermal tripping means 43 and magnetic 45 are arranged in the housing so that there is at least one plane parallel to the connection faces 21-23 intersecting both the thermal tripping means 43 and the magnetic tripping means 45.
  • the fixed end 65 of the bimetallic strip 43 is fixed to the fixed end of the coil 71 via the second portion 89 of the band forming the ferromagnetic casing 79 of the magnetic tripping means 45.
  • the free end 61 bimetallic strip 43 is, for its part, disposed between the two ends 75, 77 of the coil 71 of the magnetic tripping means.
  • the bimetallic strip extends between two planes P1, P2 parallel to the connection faces 21-23 within the limits of the magnetic trip means.
  • the deflection of the bimetallic strip 43 is effected in a parallel plane and in a direction substantially perpendicular to the displacement of the plunger core.
  • the size of the tripping means 41 in a plane parallel to the main faces 14, 15 of the cut-off device is limited.
  • This arrangement of the triggering means 43, 45 can significantly reduce their size in the housing.
  • This arrangement also makes it possible to position, substantially in the same plane parallel to the main faces 14, 15 of the cut-off device, the triggering means 43, 45, the trigger mechanism 51 and the control actuator 53. congestion of the cutoff device in a plane perpendicular to the main faces 14, 15, which allows to respect the distance of 18 mm between said main faces.
  • the deflection of the bimetallic strip 43 is also effected in a plane parallel to the main faces 14, 15 and in a direction substantially perpendicular to an axis of displacement of the plunger 73 of the magnetic tripping means 45.
  • the triggering mechanism 51 associated with said triggering means acts mainly in translation in a direction of actuation of said triggering mechanism 51 substantially parallel to a direction of actuation.
  • the control actuator 53 The triggering mechanism 51 can therefore be arranged next to the control actuator 53, so as to act directly on the internal switch comprising the movable control contact 59 and a fixed control contact 169 , represented on the Figure 9A and 9B , on which the movable control contact 59 can come to close, said fixed control contact 169 being carried by a base 159 of said control actuator.
  • the trigger mechanism 51, the tripping means 41 and the control actuator 53 are mounted on the intermediate partition 39 physically separating the phase circuit of the neutral circuit, and constituting a removable unit, independent of the flanges 11, 12 of the case.
  • the trigger mechanism 51 comprises, between the tripping means 41 and the internal switch 59, 169, a latch 101 acting on a contact lever 103.
  • the contact lever 103 carries the movable control contact 59.
  • the latch 101 is rotatably mounted about an axis 104 cooperating with a recess in the intermediate partition 39 and comprises a first actuating arm 105 which is driven by the deflection of the bimetallic strip 43.
  • the latch 101 comprises a second actuating arm 107 which is, in turn, driven by the magnetic triggering means 45.
  • the second actuating arm 107 is also driven by the manual release button 42 , or more exactly by a rod secured to said button.
  • the free end of the second actuating arm comprises a lateral pin 109 which is inserted into the attachment ring 83 of the plunger of the magnetic trigger means 45.
  • the rod may come directly press the snap ring 83 of the plunger and it is the attachment ring of the plunger which then comes to drive the second actuating arm through the lateral lug.
  • the latch 101 also includes a hook 111 for hooking the contact lever 103 and holding it in a locked or armed position, in which the movable control contact 59 and the main contacts 47, 48 are closed.
  • a holding spring 113 disposed between the second actuating arm 107 and the housing keeps the latch 101 in its locking position.
  • the contact lever 103 is, in turn, pivoted about a tilting axis 115 embodied by pins 126, said lugs being slidably mounted in grooves of the housing not shown.
  • the contact lever 103 has the shape of a square.
  • the contact lever 103 comprises a latching arm 117 allowing a hooking with the hook 111 of the latch 101 to maintain said lever locked or armed.
  • the contact lever 103 comprises a drive arm 119 on which the movable control contact 59 is arranged.
  • the movable control contact 59 is formed by an elastic flexible blade having a fixed end, mounted on the base of the control actuator, and a free end which is closed on the fixed control contact 169 when, the mechanism trigger being in the armed position, the drive arm 119 bears on the resilient flexible blade.
  • the contact lever 103 is locked or armed through the latch 101, the internal switch 59, 169 is closed.
  • the triggering mechanism 51 further comprises a driving rod 121 integral at one of its ends with the reset button 40.
  • This driving rod 121 enables the contact lever 103 to be moved in translation between a high position and a low position by pressing the reset button 40 or releasing said button.
  • the drive rod 121 is therefore slidably mounted on slides of the housing not shown. More precisely, the drive rod 121 is integral, at the other end of its ends, with a catching eye 133, the hooking function of which is described below.
  • the lateral parts of this hooking eye 133 form sliders 108 sliding in the same grooves of the housing in which the pins 126 of the contact lever 103 are engaged.
  • the drive rod 121 has stops 129 formed on the upper part of the sliders 108 intended to be supported on stops 127 of the contact lever 103.
  • a return spring 131 shown on the Figures 6A and 6B is arranged between a fixed point of the housing ( figure 4 ) and the reset button 40 to recall the drive rod 121 and said button secured to said rod in the raised position, when the contact lever 103 is unlocked.
  • the return spring 131 also makes it possible to return the driving rod 121 towards the high position, by tilting the contact lever 103 into a closed position of the control contact. 59.
  • the stops 129 formed on the sliders 108 of the drive rod 121 abut against the stops 127 of the contact lever 103, which makes it possible to tilt said lever into its locking position in which the movable control contact 59 is in its closed position.
  • the tilting of the movable control contact 59 in its closed position is obtained thanks to the pressure exerted by the latch 101 on the latching arm 117 of the contact lever 103 and by the inverse pressure of the stops 129 on the stops 127 exercised by means of the spring 131.
  • the hooking eyelet 133 described above is attached to the end of the drive rod 121 by means of a fastening piece 125.
  • This attachment piece 125 not only makes it possible to secure the fastening eyelet 133 to the drive rod 121, but also allows to hang a lug 110 secured to the drive arm 119 of the contact lever 103.
  • the lug 110 is arranged to allow its attachment by the attachment piece 125 when the contact lever 103 is tilted to its unlocked position.
  • An inclined plane 112 integral with the housing cooperates with the upper part of the contact lever 103 to tilt said lever into its unlocked position, when the reset button 40 and the drive rod 121 integral with said button are in the up position.
  • the trigger mechanism 51 described above operates as follows.
  • an electrical overload that is to say a trip of thermal type
  • the free end 61 of the bimetallic strip 43 presses on the first actuating arm 105 and counteract the spring force 113 for driving the latch 101 in rotation.
  • the plunger of the magnetic trip means 45 moves the second actuating arm 107 by the through the snap ring 83 and the lug 109, counteracting the force of the spring 113 to cause the latch 101 in rotation.
  • the second actuating arm 107 moves, through the rod, by counteracting the force of the spring 113 to drive the latch 101 in rotation.
  • the rotation of the latch 101 causes the hook 111 in a position to release the contact lever 103.
  • the contact lever 103 is tilted to the unlocking position by causing the displacement of the control contact 59 in its open position.
  • the contact lever 103 is moved in translation towards its upper position by the means of the drive rod 121 and the return spring 131.
  • This initial position can allow the locking of the contact lever 103 following a resetting of the contact lever 103.
  • the reset is done by pressing the reset button 40 to drive in translation the contact lever 103 in position low.
  • the inclined plane 112 secured to the housing keeps the contact lever 103 in its unlocked position.
  • the pin 110 of the drive arm 119 can be hooked by the attachment piece 125 secured to the drive rod 121.
  • the contact lever 103 After releasing the button 40, the contact lever 103 is driven to the high position by means of the return spring 131, until the latching arm 117 clings to the hook 111 of the latch 101. contact 103 is then tilted into a position that closes the movable control contact 59 thanks to the stress exerted by the hook 111 and the stops 129 on the contact lever 103.
  • the movable control contact 59 is, according to the first embodiment described above, in the form of a contact bridge having two contact pads 141 mounted on a spring blade 143. Between the two contact pads 141, the contact lever 103 comprises a stop 145 resting on a bumper of the control actuator 53 described in the following.
  • the control actuator 53 is an electromagnet essentially comprising a ferromagnetic carcass 151, a coil 153 wound around a coil carrier 155 of insulating material and a plunger core 157 sliding inside said coil carrier.
  • the ferromagnetic carcass 151 is formed by two folded strips 158 each having two branches and having a profile shaped "U".
  • the ends of the two branches of each folded strips 158 are fixed together, over a large part of their width, to ensure the circulation of a magnetic flux. More specifically, the ends of the folded strips 158 are engaged in sleeves 160, 162 formed in the base 159 of the control actuator and in the bobbin holder 155.
  • the actuator 53 and its base 159 thus form a unit. removable actuation that can be separately mounted before being incorporated in the cut-off device, in particular on the intermediate partition 39. This arrangement makes it easier to assemble the cut-off device.
  • the plunger core 157 has an extension or ruler 161 for driving the movable main contacts 47, 48. When an excitation current flows in the coil 153, the plunger 157 and the ruler 161 are deployed to maintain the main contacts. movable 47, 48 in a closed position. When no current flows in the coil 153, the plunger 157 and the strip 161 are retracted to keep the movable main contacts 47, 48 in an open position.
  • control actuator 53 is of the monostable type, that is to say that it has only one stable position when it is no longer powered. This stable position of the actuator corresponds to an open position of the main contacts 47, 48, which ensures a safe operation. In the event of a loss of power to the control actuator 53, the latter spontaneously returns to its stable open position.
  • control circuits of the control actuator 53 respectively referenced 164, 166, have two power supply terminals 163 AC. These terminals correspond to the control terminals 37, 38 visible on the figure 2 .
  • the control actuator 53 is powered by an external power supply connected to the power supply terminals 163 via a remote control switch 165.
  • the power supply could be obtained by connections in the housing with the phase circuit and the neutral circuit, inside the cut-off device, in which case the cut-off device would have a communication interface in place of the power supply terminals. .
  • the control circuits 164, 166 shown on the Figures 9A and 9B further comprise rectifying means 167, in this case a diode bridge, connected to the terminals
  • the rectifying means make it possible to transform the AC voltage on the supply terminals 163 into rectified voltage.
  • the rectifying means could be arranged outside the breaking device, or rendered non-existent if the control voltage is of a continuous or unidirectional nature.
  • the control circuits 164, 166 shown on the Figures 9A and 9B furthermore comprise the movable control contact 59 described above, as well as the fixed control contact 169 on which the movable control contact 59 can close.
  • the coil 153 is connected to the fixed control contact 169 and comprises a first call coil 171 and a second hold coil 173.
  • the first call coil 171 is dedicated to the displacement of the plunger 157 between its retracted position and its position. deployed.
  • the second holding coil 173 is, for its part, dedicated to holding the plunger 157 in its deployed position, in which the main contacts are closed.
  • the control circuit also comprises a movable end-of-travel contact 175 making it possible to limit the heating of the coils by reducing the consumption, when the movable main contacts are kept closed. More specifically, the movable end-of-travel contact 175 visible on the figure 8 is driven by the slide 161 so as to move away from a fixed limit switch 177 of the control circuit 164, 166 when said plunger is in a fully extended position corresponding to the closing of the main contacts.
  • the end-of-travel contact 177 is arranged in the control circuit 164, 166 to limit the excitation current flowing in one or both coils 171, 173 when opening the end-of-travel movable contact 175.
  • the first call coil 171 has smaller dimensions than the second hold coil 173, and has a lower impedance.
  • the second holding coil 173 is, in turn, sized to allow the storage of the energy required to maintain the movable main contacts 47, 48 closed.
  • the second hold coil 173 has a high resistance to minimize the drive current and to limit power consumption while maintaining the closed main contacts. This excitation current is sufficiently low, so that the electric arc generated during the opening of the movable control contact 59, following a manual trigger or on electrical fault, very low energy. This facilitates and accelerates the natural extinction of the current by minimizing the damage and wear of the moving contact 59.
  • the first call coil 171 and the second hold coil 173 are connected in series and the limit switches 175, 177 are connected in parallel with the second holding coil 173.
  • the plunger 157 When the plunger 157 is in its position deployed, corresponding to the closure of the main contacts, the end of travel contacts 175, 177 are open and the excitation current travels the two coils 171, 173. This excitation current is limited by the second holding coil 173 which has a high impedance.
  • the first call coil 171 and the second hold coil 173 are connected in parallel and the limit switches 175, 177 are connected in series with the first call coil 171.
  • the limit switches 175, 177 are open and the excitation current travels only the second holding coil 173. This excitation current is limited by the second coil of maintaining 173 which has a high impedance.
  • the fixed control contact 169 is arranged on the base 159. More specifically, the fixed control contact 169 has two blades or contact areas 181, 183 on which the pellets 141 of the movable control contact 59 come to bear when 'normal operation, ie armed trigger mechanism, without electrical fault.
  • a bumper 184 is disposed between the two contact blades 181, 183 against which abuts the abutment 145 of the contact lever 103 carrying the movable control contact 59.
  • the fixed control contact has a single contact zone on which the pad of the movable control contact, mounted on the flexible blade, is supported.
  • the fixed end-of-travel contact 177 is, for its part, also disposed on the base 159. With regard to the end-of-travel movable contact 175, it is coupled with the plunger 157.
  • This arrangement, in which the contact movable control 59 and the limit switch contacts 175, 177 are arranged on the actuating unit facilitates assembly of the cut-off device.
  • the rectifying means 167 are also directly arranged on the base 159 of the actuating unit. The assembly of the cut-off device is thus even easier.
  • the control actuator 53 described above operates as follows.
  • the opening or closing command of the movable main contacts 47, 48 is done through the remote control switch 165, external to the cut-off device.
  • the control actuator 53 is energized and the movable main contacts 47, 48 are kept closed through the plunger 157 and the strip 161 which are in the deployed position.
  • the remote control switch 165 is open, the actuator is no longer powered and the movable main contacts 47, 48 are kept open through the plunger 157 and the strip 161 which are in the retracted position.
  • the remote control switch 165 being disposed upstream of the rectifying means 167, the current flowing in the coil does not cancel instantaneously but gradually decreases while traveling by the rectifying means 167.
  • the very low consumption of the actuator allows the progressive decay of the current. Only when the current reaches the fallback current value does the plunger core 157 move into its retracted position.
  • the level of the dropout current is very low because of the very large number of turns of the holding coil. This advantageously makes it possible, without any other reserve of energy of electrical origin, for example of the capacitance type, to have better resistance of the device to short-term power cuts, that is to say, cuts in the power supply. order of a few tens of milliseconds.
  • the control actuator 53 does not instantaneously move into its stable open position, but remains in the closed position, thus guaranteeing the maintenance of the contacts. main in closed position.
  • the control circuit of the control actuator 53 makes it possible to obtain good resistance to short-term cuts, the order of a few tens of milliseconds, which could be caused by a short circuit downstream of another cut-off device.
  • This resistance to short-term interruptions thus makes it possible to improve the continuity of service on the departures not concerned by the defect.
  • the opening movable main contacts 47, 48 following an electrical fault or closure of said main contacts after a reset is done through the movable control contact 59.
  • the movable control contact 59 being disposed downstream of the rectifying means 167, the opening of the main contacts 47, 48 following an electrical fault is faster compared to an opening of said contacts through the remote control switch 165.
  • the opening time of the main contacts is then less than 20 ms, for example between 6 and 15 milliseconds, between the moment of appearance of the defect and the effective opening of the main contacts.
  • This fault mode of operation is intended to ensure a sufficiently fast opening of the main contacts for low to moderate short-circuit currents, typically less than thirty times the rated current, for which the upstream limiting device is not activated and the switchgear must interrupt the fault current alone.
  • the movable main contacts 47, 48 are respectively disposed on two movable contact arms 203, 204 pivotally mounted about an axis 201 on a first end of said arms.
  • the contact arms 203, 204 have the shape of a blade having two main faces mounted substantially parallel to the main faces 14, 15 of the housing.
  • the movable main contacts 47, 48 are fixed on the edge or the thickness of the contact arms 203, 204, and on their main dimension, towards a second end of said contact arms.
  • the contact arms 203, 204 are coupled to the strip 161 of the plunger 157 through a stirrup or contact holder 205 in which said arms are engaged.
  • the stirrup 205 is itself integrally mounted to the end of the strip 161.
  • a contact pressure spring 208 acting on each contact arm 203, 204 maintains a sufficient pressure between the main movable contacts 47, 48 and their respective main fixed contacts 206, 207. More specifically, this contact pressure spring 208 is disposed between a member of the stirrup 205 and the end of the contact arms 203, 204 carrying the movable main contacts 47, 48. When the plunger 157 is deployed, the spring contact pressure 208 thus makes it possible to maintain a pressure force between the main contacts 47, 48, 206, 207.
  • moving the movable main contacts 47, 48 as a result of an electric fault trip or as a result of of an opening or closing control command is made through the same control actuator 53 and along an axis substantially coincident with the direction of actuation of said actuator, that is to say the axis of displacement of its plunger 157.
  • this actuation direction is perpendicular to the front face of the cutoff device and extends parallel to the trigger mechanism 51 which increases the compactness of the cutoff device.
  • the triggering mechanism 51 operates along a translation axis substantially parallel to an actuating axis of the control actuator 53.
  • the axis of displacement of the drive rod 121 and the contact lever 103 of the trigger mechanism 51 is substantially parallel with the axis of displacement of the plunger core 157 of the control actuator 53.
  • the movable contact arms 203, 204 are in an electrically conductive material.
  • a magnetic reinforcing circuit 210, 211 cooperating directly with each movable contact arm 203, 204 makes it possible to reinforce the pressure force between the main contacts 47, 48, 206, 207, especially when the current flowing in the mobile contact arms 203 , 204 is much greater than the nominal current of the device, for example during the circulation of a short-circuit current greater than, or even much greater than, the magnetic tripping threshold, for example ten times higher.
  • each magnetic reinforcing circuit 210, 211 essentially has an element made of ferromagnetic material having a U-shaped section ( figure 5 ), said element being integrally mounted in the housing and partially surrounding each contact arm 203, 204.
  • the magnetic reinforcement circuit is open, that is to say that the active air gap, responsible for the reinforcing force is formed by the distance in the air between the two branches of the U. This differs in particular from so-called closed magnetic circuits, for which another ferromagnetic member, generally mobile, comes to close the magnetic circuit so as to reduce the gap.
  • the contact arms 203, 204 are advantageously of non-ferromagnetic material, for example copper or brass so as not to modify the active air gap during their movement.
  • the magnetic reinforcement circuits 210, 211 are thus fixed with respect to the fixed main contacts 206, 207.
  • Each contact arm 203, 204 comprises two lateral faces substantially parallel to the faces of the legs of the U-shaped profile of the magnetic reinforcing circuits 210, 211 or the edges of said magnetic reinforcement circuits, so that the magnetic flux flowing in the U-shaped profile of said magnetic reinforcement circuits 210, 211 passes through said contact arm by its side faces.
  • the movable contact arms 203, 204 is pivotally mounted. In other embodiments not shown, the movable contact arms could be movable in translation.
  • the magnetic reinforcing circuits 210, 211 are preferably in an alloy comprising iron and silicon, for example 2% silicon. Such a composition makes it possible, among other things, to obtain a strengthening of the contact pressure force more rapidly on a rising edge with a steep slope of the current in the contact arms 203, 204, for example during a short-circuit. .
  • the magnetic reinforcement circuits 210, 211 thus allow to minimize the risk of arcing between the movable main contacts 47, 48 and the respective fixed contacts 206, 207, as generally observed on conventional electrical devices following the repulsion of the contacts. Thus the erosion of the main contacts is very much minimized. In addition, the welding risks of the main contacts are also greatly reduced.
  • the magnetic reinforcing circuits 210, 211 also have the function of keeping the main contacts closed for the duration of the limitation of the current by the limiting device upstream. This ensures that the main contacts do not open only when the fault current has been greatly reduced, or even canceled, thanks to the limiting device.
  • the breaking device according to the invention has two different behaviors depending on whether the short circuit is of high intensity or low to moderate.
  • the upstream limiting device ensures the limitation of the current of defect, so that the downstream cutoff device behaves as a closed switch as long as the current exceeds a predetermined threshold. In this case, the magnetic reinforcement circuit must make it possible to maintain the main contacts in the closed position.
  • the upstream limiting device It does not intervene and the failure must be ensured by the downstream cutoff device alone.
  • the reinforcing force 301 exerted by a magnetic reinforcement circuit when the contact arm is traversed by a strong short-circuit current, tends to increase between a position of the contact arm in which said arm is completely covered by the reinforcing circuit over at least a part of its length and a position 302 in which said contact arm protrudes slightly with respect to said magnetic reinforcing circuit. Beyond this last position of small overshoot of the contact arm, this reinforcing force 301 tends to decrease. This value of the reinforcement force 301 applied to the contact arm to keep it closed is therefore not optimized.
  • the reinforcing force 303 exerted by such a magnetic reinforcing circuit, completely covering said arm over at least a part of its length when the contact arm is closed, has tendency to decrease slowly as soon as said contact arm is opened. This slow decay of the reinforcing force may tend to slow down the opening of the main contacts.
  • the reinforcing force exerted on said contact arm is optimized to keep the main contacts closed during short circuits of high intensities and to open more rapidly said main contacts during short circuits of low intensity.
  • the reinforcing force 305 is maximized to maintain the main contacts closed during short circuits of high intensities and the reinforcing force 307 decreases more rapidly, thanks to the overflow, to open the main contacts faster during low intensity short circuits.
  • the curves 301, 303 correspond to the variation of the reinforcing force as a function of the opening position of the main contacts in the absence of overshoot.
  • each magnetic reinforcing circuit 210, 211 is arranged relative to the contact arm 203, 204 with which it is associated so that when the moving main contact is closed ( figure 11A ), said contact arm protrudes from the reinforcement circuit by a predetermined overrange distance 221.
  • This overtaking distance, averaged over the portion of the length of the contact arm covered by the magnetic reinforcement circuit, may be between 0.5 and 1 millimeter.
  • the overtaking distance represented on the figure 11A under the reference 221 corresponds to a maximum distance not averaged. In the proposed embodiment, the maximum non-averaged overshoot distance is greater than or substantially equal to a wear guard.
  • this wear guard is generally between 0.5 and 3 millimeters, for example equal to 1 millimeter.
  • the contact arms 203, 204 and their respective magnetic reinforcing circuits 210, 211 operate in the following manner. When the contact arms 203, 204 are in a closed position of the contacts ( figure 11A ), said contact arms are slightly inclined with respect to the base of the magnetic reinforcing circuits 210, 211, the upper edge of said contact arms protrudes slightly with respect to the upper edges of the branches the "U" of said magnetic reinforcement circuits.
  • This exceeding of the contact arms 203, 204 relative to the magnetic reinforcement circuits 210, 211 is such as to maximize the reinforcement force applied to said contact arms when a strong short circuit current is that is, greater than 30 times the rated current of the breaking device, flows in said contact arm.
  • a limitation of this current can generally be provided by a current limiting device arranged upstream, and the reinforcement force 305 ( figure 12 ) applied on the contact arms 203, 204 is substantially maximum, which keeps the main contacts 47, 48, 206, 207 of the closed switching device.
  • the reinforcement force 307 applied to said contact arm is less.
  • a limitation of this current can generally be achieved by the current limiting device arranged upstream otherwise the selectivity is lost and the opening of the main contacts 47, 48, 206, 207 is facilitated by the rapid fall of the reinforcing force applied to the contact arms.
  • an electric arc is formed, and a direct current to flow in the contact arms 203, 204.
  • the reinforcement force 307 applied to the contact arms 203, 204 decreases more rapidly with the overflow than without exceeding (303), which makes it possible to accelerate the opening of the main contacts and the extinction of this arc.
  • the cut-off device comprises a reset locking mechanism which is active when the main contacts 47, 48, 206, 207 are soldered. As explained below, this mechanism may also be referred to as a solder signaling mechanism of the contacts. This welding of the contacts can be for example induced by the presence of an electric arc, following an electrical fault occurring on a cutoff device at the end of life, when the contact pads are worn.
  • the reset locking mechanism comprises a hooking lever or connecting rod 231, said lever being pivotally mounted on the housing about an axis 233. The end of a first arm 235 of the engaging lever 231 is engaged in the yoke 205 in which are also engaged the contact arms 203, 204.
  • This first arm 235 of the attachment lever 231 is thus directly coupled to the main contacts, this makes it possible to activate the reset locking mechanism directly as a function of the position of these contacts.
  • This first arm 235 of the attachment lever 231 comprises a stop 245 resting on a stopper 247 of the stirrup 205 when the main contacts are closed or welded, that is to say when the plunger 157 integral with said stirrup is maintained in its deployed position through the control actuator 53 or because of the welding of the main contacts.
  • a return spring 238 is disposed between a curved portion 239 of the engagement lever 231 and a stop secured to the housing, so as to exert a restoring force on said engaging lever to an unlocked position.
  • the hooking lever 231 comprises a hook 243 at the end of a second arm 244, said hook 243 being intended to be engaged in the hooking eye 133 at the end of the drive rod 121.
  • the hooking lever 231 is arranged so that the engagement of this hook 243 in the hooking eye 133 is, on the one hand, when said lever of 231 is held by means of the first arm 235 and the stirrup 205 in a locked position corresponding to a position of closure of the contact arms 203, 204, in this case because of the welding of the main contacts, and on the other hand, when the drive rod 121 is moved to a triggered position as a result of an electrical fault trip or a manual trip.
  • the reset locking mechanism further includes an opening 249 ( Figure 13B ) provided in the resetting button 40 disposed at the opposite end of the drive rod 121 relative to the hooking eye 133. This opening is intended to receive the handle of a padlock to prevent rearming after the opening of the contacts following an electrical fault or following a deliberate release with the button 42.
  • this opening 249 is formed in the reset button 40 so that this opening is at least partially retracted, in this case completely retracted, when the drive rod is in its released position and the hook 243 of the attachment lever 231 is engaged in said latching eyelet ( figure 13C ), or when the cut-off device is switched on without soldering contacts ( figure 13A ).
  • the reset locking mechanism operates as follows. When the main contacts 47, 48, 206, 207 are soldered, the opening of the remote control switch 165 does not retract the plunger 157 and the contact arms 203, 204 are held in their closed positions.
  • the stirrup 205 is thus locked in its extended or closed position of the contacts and the hooking lever 231 is thus in its locking position.
  • the latch 101 is moved into its unlocking position and releases the contact lever 103.
  • This same contact lever 103 is moved in translation under the pressure of the spring 123 opening the contact 59 while the drive rod 121 on which it is mounted are displaced in translation upwards under the pressure of the spring 131.
  • the eyecatch 133 at the end of said rod is hooked to the hook 243 of the engaging lever 231 which is in its locking position.
  • the translational movement upward of the drive shaft 121 is stopped before the end of its travel.
  • the reset button 40 integral with the drive rod 121 is held in an intermediate position between a release position in which said button is in the up position and an arming position in which it is in a low position.
  • This intermediate position of the reset button 40 makes it possible to signal the welding of the main contacts.
  • the attachment lever 231 also has a function of signaling the welding of the contacts.
  • FIG. figure 13A The cut-off device in normal operation, that is when it is armed, is shown in FIG. figure 13A .
  • the latch 101 In normal operation, the latch 101 is in a locking position in which the hook 111 holds the contact lever 103 in a locked position. In this position of the contact lever 103, the contact pads 141 of the movable control contact 59 disposed on said lever rest on the contact blades 181, 183 of the fixed control contact 169 under the pressure of the spring blade 143.
  • the reset button 40 integral with the drive rod 121 is in a retracted position, that is to say that the upper portion of the button 40 is at the same level as the indicator 44 which returns a red color.
  • Closing the movable control contact 59 supplies power to the control circuit of the control actuator 53 and the plunger core 157 of said actuator is held in its extended position.
  • the yoke 205 secured to the plunger core 157 keeps the contact arms 203, 204 in a closed position of the main contacts 47, 48, 206, 207 through the ruler 161.
  • the contact pressure spring 208 As for him, it puts pressure on the contact arms 203, 204 to ensure the passage of a nominal current.
  • the device in the unlatched position is illustrated at Figure 13B .
  • the triggering of the device may be the consequence of a thermal-type electrical fault, a magnetic-type electrical fault or manual triggering by means of the manual release button 42.
  • the lock 101 has been moved into its unlocking position through the triggering means 41 or the manual release button 42, and the contact lever 103 has been unlocked by moving the hook 111 of the lock 101.
  • the lever of contact 103 and the drive rod 121 on which it is mounted have been moved under the stress exerted by the spring 131.
  • the movable control contact 59 is thus found in an open position.
  • the resetting button 40 integral with the drive rod 121 is completely out and the indicator light 44 returns a green color, the opening 249 is accessible and the lockout is possible.
  • the opening of the movable control contact 59 no longer makes it possible to feed the control circuit of the control actuator 53 and the plunger core 157 of the said actuator is returned to its stable retracted position by the return spring 238.
  • 203, 204 are in an open position of the main contacts 47, 48, 206, 207 through the yoke 205 secured to the plunger core 157.
  • the device When the main contacts 47, 48, 206, 207 are soldered, the device is in the same state as that shown in FIG. figure 13A .
  • the breaking device When a triggering of the device is generated by a fault current or by the manual triggering button 42, the breaking device is in a new state illustrated in FIG. figure 13C .
  • said contact lever is moved by the spring 123 and the driving rod 121 on which it is mounted have been moved under the stress exerted by the spring 131 and the movable control contact 59 is moved to the open position. It follows that the actuating circuit of the control actuator is no longer powered.
  • the contact arms 203, 204 are maintained in their closed position of the main contacts 47, 48, 206, 207 and the stirrup 205 remains in its deployed position.
  • the hooking lever 231 is held in a locking position, and the translational movement of the drive rod 121 during the momentary unlocking has been stopped by the hooking eyelet 133 which has caught on hook 243 of the engaging lever 231.
  • the reset button 40 integral with the drive rod 121 is in an intermediate position between the retracted position when the cutoff device is armed and the output position when the device cutoff is triggered. This intermediate position of the reset button makes it possible to signal to the user that the main contacts 47, 48, 206, 207 are soldered and that the cut-off device is out of operating condition.
  • the cut-off device 1 described above can be used in outgoing circuits downstream of a current limiting device 401.
  • the device 401 can also be designed to open the head circuit very quickly. in case of short circuit current in one of the starting circuits. In this way, the overhead current is also limited before opening cut-off device 1 in the respective starting circuit.

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EP20100354076 2009-12-11 2010-11-15 Dispositif de coupure à indicateur de soudure des contacts Active EP2333804B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0905990A FR2953979B1 (fr) 2009-12-11 2009-12-11 Dispositif de coupure avec circuit magnetique de renforcement
FR0905987A FR2953986B1 (fr) 2009-12-11 2009-12-11 Dispositif de coupure a indicateur de soudure des contacts

Publications (2)

Publication Number Publication Date
EP2333804A1 EP2333804A1 (fr) 2011-06-15
EP2333804B1 true EP2333804B1 (fr) 2012-08-22

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Application Number Title Priority Date Filing Date
EP20100354076 Active EP2333804B1 (fr) 2009-12-11 2010-11-15 Dispositif de coupure à indicateur de soudure des contacts

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EP (1) EP2333804B1 (es)
CN (1) CN102097258B (es)
ES (1) ES2390264T3 (es)

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Publication number Priority date Publication date Assignee Title
CN104252998B (zh) * 2013-06-25 2016-08-10 施耐德电器工业公司 用于断路器的脱扣指示装置和断路器
CN104576116B (zh) * 2013-10-11 2017-03-01 西门子公司 开关柜的复位组件及其开关柜
US11398363B2 (en) * 2018-10-30 2022-07-26 Eaton Intelligent Power Limited Circuit interrupters with lockout feature and related methods

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Publication number Priority date Publication date Assignee Title
FR2036911B1 (es) * 1969-04-17 1976-04-16 Saparel
FR2516297A1 (fr) * 1981-11-09 1983-05-13 Telemecanique Electrique Appareil contacteur comportant des moyens d'ouverture automatique, des circuits de puissance et un dispositif de commande locale
FR2574218B1 (fr) * 1984-12-03 1987-03-20 Merlin Gerin Effecteur pour une installation modulaire de distribution domestique et de gestion d'energie electrique
FR2649826B1 (fr) 1989-07-11 1995-11-24 Merlin Gerin Mecanisme de commande pour disjoncteur electrique
FR2923942B1 (fr) * 2007-11-16 2014-09-05 Schneider Electric Ind Sas Dispositif de commande d'un appareil de coupure electrique et appareil de coupure electrique le comportant

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CN102097258A (zh) 2011-06-15
CN102097258B (zh) 2014-10-22
ES2390264T3 (es) 2012-11-08
EP2333804A1 (fr) 2011-06-15

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