EP0008558A1 - Circuit breaker with a movable contact pivotally mounted on a movable latch member - Google Patents

Circuit breaker with a movable contact pivotally mounted on a movable latch member Download PDF

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Publication number
EP0008558A1
EP0008558A1 EP79400576A EP79400576A EP0008558A1 EP 0008558 A1 EP0008558 A1 EP 0008558A1 EP 79400576 A EP79400576 A EP 79400576A EP 79400576 A EP79400576 A EP 79400576A EP 0008558 A1 EP0008558 A1 EP 0008558A1
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EP
European Patent Office
Prior art keywords
movable contact
circuit breaker
shoulder
movable
latching
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.)
Ceased
Application number
EP79400576A
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German (de)
French (fr)
Inventor
Jean-Pierre Negre
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.)
Legrand SA
Original Assignee
Legrand SA
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.)
Filing date
Publication date
Application filed by Legrand SA filed Critical Legrand SA
Publication of EP0008558A1 publication Critical patent/EP0008558A1/en
Ceased legal-status Critical Current

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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
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the present invention relates generally to circuit breakers.
  • a circuit breaker generally comprises, in a housing, a first contact, which is fixed, a second contact, which is movable between a latched closed position and a latched open position, and which is requested in direction of its position triggered by elastic opening means, any trigger member, which is capable of causing the release of said movable contact, and therefore the passage of the latter from its engaged position to its triggered position, a joystick d engagement and release, which is available to the user, and which is movably mounted between an engagement position and a release position, and a latching mechanism, which is established between said trigger member and said switch on and off.
  • the present invention relates more particularly to those of these circuit breakers in which the movable contact is articulated by pivot to a latching member, which belongs to the latching mechanism, and which is itself movably mounted in the housing.
  • the latching mechanism includes in general, a latching member, on which the movable contact is therefore articulated by a pivot, and which is subjected to the triggering member, an operating member, which is linked to the latching lever and trigger, and which in practice is integral therewith, and a retaining member, by which said latching member is capable of releasably engaging said operating member.
  • the corresponding tripping member acts on the latching member and prints on it a sufficient movement so that it escapes the retaining member with which it was hitherto engaged.
  • the attachment provided by the attachment mechanism is therefore broken, and the movable contact, released, departs from the fixed contact under the stress of the elastic opening means associated with it.
  • the movable contact comprises a drive shoulder, on which can come to carry, for its drive, a shoulder provided for this purpose on the attachment member to which it is articulated by pivot.
  • the latching member can involve its own movement in the driving of the movable contact, its shoulder coming to bear against the driving shoulder of said movable contact.
  • the present invention generally relates to a provision allowing, on the contrary, the latching member to apply, upon opening, to the moving contact, a real tearing force actively participating in the takeoff of this moving contact. with respect to the fixed contact to which it has hitherto been applied, without modifying the conditions of movement of the assembly.
  • the present invention relates to a circuit breaker, the latching mechanism of which comprises, as mentioned above, a movable latching member, on which the movable contact is articulated by a pivot, and which is subjected to a tripping member, said movable contact further comprising a drive shoulder on which may come, for its drive, a shoulder provided for this purpose on the latching member,
  • this circuit breaker being characterized in that, apart from the fact of its articulation link with the movable contact and of the possible guiding of the corresponding articulation pivot, the latching member is free to move in the case of the circuit breaker, no fixed stop being provided in this- ci on the path swept at the opening by said organ fastening, so that, upon opening, this fastening member immediately drives the mobile contact by its shoulder, and thus applies a tearing force to the latter, without modifying the corresponding pivot axis .
  • the opening speed of the circuit breaker is advantageously increased.
  • Figures 10 and 11 are views similar to that of Figure 8 and show two successive phases of the operation of this alternative embodiment.
  • Such a circuit breaker generally comprises a housing 10; according to arrangements known in themselves, and which will therefore not be detailed here, such a case is for example formed by two shells suitably facing one another and suitably linked to each other by screws or rivets.
  • the housing 10 is equipped laterally with two connection terminals 11A, 11B.
  • a metal strip 12A which belongs to the copperwork of the circuit breaker; at one of its ends, this strip 12A is in electrical connection with the terminal 11A, and at the other of its ends, it delimits, jointly with another metal strip 12B, a breaking chamber 13 which, in the exemplary embodiment shown, is furnished with extinguishing plates 14.
  • the bands 12A, 12B constitute two arc horns 15A, 15B.
  • the arcing horn 15A also constitutes by itself a fixed contact, with which a movable contact 16 cooperates.
  • this movable contact 16 is movable between a posi latched closing position, Figure 1, for which it is in abutment against the fixed contact 15A, and a triggered opening position, Figure 4, for which it is moved away from this fixed contact 15A, and it is constantly urged in the direction from its triggered opening position by elastic opening means, which will be described below.
  • At least one triggering member is provided, which is capable of causing the release of the movable contact, and therefore the passage of the latter from its engaged position to its triggered position.
  • two such triggering members are provided, one thermal, the other magnetic.
  • the thermal trip member comprises a bimetallic strip 18, one end 19 of which is fixed, while the other end 20 is free; by this free end 20 the bimetallic strip 18 is connected by a braid 21 to the movable contact 16.
  • the magnetic trip member comprises the coil 23 of a magnetic circuit 24, and this coil 23 is inserted in series with the bimetallic strip 18 between the movable contact 16 and the terminal 11B, one of its ends being connected to the fixed end 19 of the bimetallic strip 18 by a conductor, not visible in the figures, while the other of its ends is connected by a metal strip 22 to the terminal 11B.
  • a plunger core 25 In the axis of the winding 23 is movably mounted a plunger core 25.
  • an interlocking and triggering lever 26 which is available to the user, thanks to a passage 27 provided for this purpose in the front wall of the housing 10, and which is movable between a position of engagement, figure 1, and a position of engagement, figure 4.
  • this interlocking and triggering lever 26 is rotatable, being carried by a hub 28 whose pins, not visible in the figures, are pivotally engaged in housings provided for this purpose in the housing 10.
  • the interlocking and triggering lever 26 is urged permanently towards its triggering position, by a torsion spring 29, one branch of which bears on the housing 10 while the another acts on the hub 28.
  • a hooking mechanism which comprises, a member d 'hooking 30, on which the movable contact 16 is articulated by a pivot 31, and which is subjected to one and the other of the triggering members in question, as described below, an operating member 32, which is linked to the engaging and triggering lever 26, and a retaining member 33, by which said latching member 30 is capable of coming into engagement with said operating member 32, as described below.
  • the movable contact 16 carries a recess 34, by which it is engaged on the latching member 30, the longitudinal edges of this recess 34 being, in their middle part , shaped as a gutter, for housing the articulation pivot 31, which passes right through the hooking member 30, and which, at its ends, is engaged in guide grooves 36 provided for this purpose in the housing 10.
  • the elastic opening means associated with the movable contact 16 comprise a torsion spring 37, the central torsion part 38 of which is engaged on the pivot 31, including a branch 39 is supported on a lug 40 fixedly fixed to the housing 10, and the other branch 41 of which bears on the movable contact 16.
  • each of these branches is split, the spring 37 generally having the configuration of a part. in U presenting two wings, which form the branches in question and frame the movable contact 16 and the hooking member 30, with engagement on the pivot 31, and a median part, which connects these wings to each other and relates to the movable contact 16.
  • the operating member 32 is a sector integral with the hub 28 carrying the engagement and release lever 26,
  • the retaining member 33 is a lug, mounted movable on the one hand, by its middle part, in a buttonhole 43 of the sector 32, and on the other hand, by its ends, in buttonholes 36 provided for this purpose in the housing 10, and, for cooperation with such a member retaining, the attachment member 30 has, on a first side of the pivot 31, an arm 44 provided with a notch 45 by which it is able to engage with said retaining member 33;
  • the buttonhole 43 of the sector 32 constituting the operating member comprises, at its end, a notch 46 in which the lug constituting the retaining member 33 can also engage.
  • the hooking member 30 On the other side of the pivot 31, the hooking member 30 has an arm 47, which is bent, and the end of which is opposite an extension 48 of the movable core 25; on this arm 47 of the hooking member 30 is engaged a frame 49 which, in the middle part of its longitudinal edges, is provided laterally projecting with lugs 50 by which it is pivotally mounted in housings provided for this effect in the housing 10, and whose transverse edges extend, one facing said arm 47 of the fastening member 30, the other facing the free end 20 of the bimetallic strip 18.
  • a stirrup 51 On the bent arm 47 of the hooking member 30, is also engaged a stirrup 51, the median crosspiece of which extends substantially in line with the articulation pivot 31, and the two wings of which are integral with a hub 52; the ends of this hub 52 are, in the manner of journals, rotatably mounted in holes, which are provided for this purpose in the housing 10, and which open to the outside, so that said hub constitutes a drive shaft through which the circuit breaker can, using spacers coupling not shown, be linked to a neighboring circuit breaker, or another module of this type, fitted with a similar drive shaft.
  • the hub 52 has a protruding finger 54 radially, and, jointly, facing this finger, the bent arm 47 of the hooking member 30 has a protruding lug 55.
  • the movable contact 16 carries a drive shoulder, on which can carry, for its drive, a shoulder provided for this purpose on the attachment member 30.
  • the drive shoulder of the movable contact 16 is formed by the crosspiece 56 constituting the transverse edge of its recess 34 opposite the fixed contact 15A, that is to say say the farthest from the latter, this crosspiece 56 is offset transversely with respect to the current part of the movable contact 16, by forming for example, and as shown, an end folded at right angles thereto, and the corresponding shoulder 58 of the fastening member 30 is formed on the tab 55 which laterally projecting from this fastening member.
  • the attachment member 30 is, according to the invention, free to move in the housing 10, no fixed stop being provided in the latter on the path which it sweeps when the movable contact 16 opens.
  • This opening is for example caused by a short circuit on the line concerned, causing the moving core 25 to come into action, which, acting on the arm 47 of the fastening member 30, causes a rotation thereof around the pivot 31
  • the shoulder 58 of the hooking member 30 has come to bear against the shoulder 56 of the movable contact 16, so that, as soon as it is released, the latter is subjected, d on the one hand, to the drive effects due to the spring 37, as described above, and on the other hand, to a tear-off effect corresponding to the rotation which, due to and transmitted from the movable core 25 ci in movable contact 16 by the fastening member 30, tends to rotate this movable contact 16, according to arrow Fl in FIG. 3.
  • the movable contact 16 reaches its triggered opening position, FIG. 4, and jointly, under the stress of its spring 29, the engagement and trigger lever 26 also reaches its triggering position shown on this Figure, the retaining member 33, previously released, having escaped the notch 46 of the buttonhole 43.
  • the latching member 30 acts on the cross member of the stirrup 51, which causes the rotation of the transmission shaft that constitutes the hub 52, according to arrow F2 in the figure. 4.
  • the torsion spring 37 has its central torsion part 38 engaged on a fixed boss 53 of the associated housing, while that 41 of its branches which acts on the fixed contact 16, hereinafter called the action branch, jointly constitutes a bending spring, and is for this purpose engaged, in its middle part , with a support lug 59.
  • this support lug 59 is carried by the movable contact 16 and, the latter having the general configuration of a U-shaped part, constitutes a crosspiece connecting one to the other the two flanges 60 of this piece.
  • the branch 41 of the torsion spring 37 passes above this cross-member 59, and below the middle part 61 of the movable contact 16 connecting the flanges 60 thereof to one another to one of their ends.
  • the support lug 59 jointly constitutes the drive shoulder of the movable contact 16, the latching member 30 having, facing this support lug 59, a notch , by which it can engage therewith, and thus forming the corresponding shoulder 58.
  • the branch 41 of the spring 37 is bent, or, in other words, has an arrow, its free end being in abutment against the movable contact 16, and, through it , against the fixed contact 15A, on a first side, while its middle part is, on the other side, in abutment against the support lug 59 of this movable contact 16.
  • the spring 37 acts on the lug 59 in a direction which is the same as that in which it also acts, according to a process analogous to that described above, when the movable contact 16 is opened. hooking member 30.
  • the latching member 30 in its rotation, comes, through its shoulder 58, in engagement with the lug 59, and, driving the latter, causes the cancellation of the bending of branch 41 of spring 37, FIG. 7, and this spring 37 therefore does not oppose any opposing force against the tearing-off force induced directly on the movable contact 16 by the attachment member 30.
  • This pulling force therefore adds its effects to the driving force due moreover to the central torsional part 38 of the spring 37.
  • the support lug 59 forms an independent part, movably mounted in guide grooves 63 of the associated housing, and the attachment member 30 comprises, for temporary support retractable from this support lug 59, a second shoulder 64.
  • drive shoulder 58 By its first shoulder 58, it is, as previously, able to act on a drive shoulder provided for this purpose on the movable contact 16, drive shoulder which, in the embodiment shown, is constituted by a lug 65 projecting from this movable contact 16.
  • the action branch 41 of the torsion spring 37 which, as before, constitutes a bending spring, is, by a return 70 from its free end, engaged in a groove 71 of the mobile contact 16.
  • the interlocking and tripping lever which is shown diagrammatically in fine lines in the figures, under the general reference 126, is different from that implemented previously: it has the shape of a yoke, of which the middle part, which is external, forms the gripping means available to the user, and the branches of which, which are internal and frame the hooking mechanism, each carry at their free end a pin 128.
  • a bulge 132 of these branches forms the operating member linked to such a lever, this bulge comprising a shoulder 146 for cooperation with the retaining member by which the latching member 30 is likely to come engaged with this controller.
  • this retaining member is constituted by the pivot 31 by which the movable contact 16 is articulated to the attachment member 30.
  • the attachment member 30 first rotates around the pivot 31, the latter being momentarily retained by the engagement and trigger lever 126, and this rotation of the member hooking 30 causes the release of the support lug 59, the shoulder 64 of the hooking member 30 escaping therefrom; due to the resulting retraction for the support lug 59, the bending of the action branch 41 of the spring 37 is canceled.
  • the latching member 30 causes, as before, the rotational drive of this movable contact 16 .
  • the movable contact 16 is subjected to the opening only to the effects of the spring 37 which are applied to it by the end of the branch 41 thereof, excluding effects of this spring which were previously applied to it via the support lug 59.
  • the attachment mechanism is, as described in the French patent No. 75 34575 mentioned above, of the type comprising a member retainer mounted movable in grooves of the housing, it could just as easily be of another type, and for example of the type of latching mechanism with free rolling element described in the French patent application registered on March 22, 1978 under No. 78 08263, in which the retaining element is a free rolling element.

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  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

Circuit breaker in which the moving contact 16 is hinged by a pivot 31 to a moving fastening unit 30 which belongs to the fastening mechanism of the circuit breaker, and which has a shoulder 58 able to bear on a shoulder 56 of the moving contact 16 in order to bring about the opening of the latter. According to the invention, apart from its hinged connection with the moving contact 16 and the guiding by the corresponding pivot 31, the fastening unit 30 is free from its displacements in the box 10, no fixed stop being provided in the latter over the path which it sweeps on opening. Application to circuit breakers. <IMAGE>

Description

La présente invention concerne d'une manière générale les disjoncteurs.The present invention relates generally to circuit breakers.

Ainsi qu'on le sait, un disjoncteur comporte globalement, dans un boîtier, un premier contact, qui est fixe, un deuxième contact, qui est mobile entre une position enclenchée de fermeture et une position déclenchée d'ouverture, et qui est sollicité en direction de sa position déclenchée par des moyens élastiques d'ouverture, un quelconque organe de déclenchement, qui est apte à provoquer la libération dudit contact mobile, et donc le passage de celui-ci de sa position enclenchée à sa position déclenchée, une manette d'enclenchement et de déclenchement, qui est à la disposition de l'usager, et qui est montée mobile entre une position d'enclenchement et une position de déclenchement, et un mécanisme d'accrochage, qui est établi entre ledit organe de déclenchement et ladite manette d'enclenchement et de déclenchement.As is known, a circuit breaker generally comprises, in a housing, a first contact, which is fixed, a second contact, which is movable between a latched closed position and a latched open position, and which is requested in direction of its position triggered by elastic opening means, any trigger member, which is capable of causing the release of said movable contact, and therefore the passage of the latter from its engaged position to its triggered position, a joystick d engagement and release, which is available to the user, and which is movably mounted between an engagement position and a release position, and a latching mechanism, which is established between said trigger member and said switch on and off.

La présente invention vise plus particulièrement ceux de ces disjoncteurs dans lesquels le contact mobile est articulé par pivot à un organe d'accrochage, qui appartient au mécanisme d'accrochage, et qui est lui-même monté mobile dans le boîtier.The present invention relates more particularly to those of these circuit breakers in which the movable contact is articulated by pivot to a latching member, which belongs to the latching mechanism, and which is itself movably mounted in the housing.

Un tel disjoncteur se trouve notamment décrit dans le brevet français enregistré sous le N° 75 34575 et publié sous le N° 2.)31.879.Such a circuit breaker is described in particular in the French patent registered under No. 75 34575 and published under No. 2.) 31,879.

Dans ce disjoncteur, le mécanisme d'accrochage comporte d'une manière générale un organe d'accrochage, sur lequel est donc articulé par un pivot le contact mobile, et qui est soumis à l'organe de déclenchement, un organe de manoeuvre, qui est lié à la manette d'enclenchement et de déclenchement, et qui en pratique fait corps avec celle-ci, et un organe de retenue, par lequel ledit organe d'accrochage est susceptible de venir en prise de manière libérable avec ledit organe de manoeuvre.In this circuit breaker, the latching mechanism includes in general, a latching member, on which the movable contact is therefore articulated by a pivot, and which is subjected to the triggering member, an operating member, which is linked to the latching lever and trigger, and which in practice is integral therewith, and a retaining member, by which said latching member is capable of releasably engaging said operating member.

A l'ouverture, par exemple lors d'un court-circuit sur la ligne protégée par le disjoncteur concerné, l'organe de déclenchement correspondant vient agir sur l'organe d'accrochage et imprime à celui-ci un mouvement suffisant pour qu'il échappe à l'organe de retenue avec lequel il était jusqu'ici en prise.At the opening, for example during a short circuit on the line protected by the circuit breaker concerned, the corresponding tripping member acts on the latching member and prints on it a sufficient movement so that it escapes the retaining member with which it was hitherto engaged.

L'accrochage assuré par le mécanisme d'accrochage se trouve dès lors rompu, et le contact mobile, libéré, s'écarte du contact fixe sous la sollicitation des moyens élastiques d'ouverture qui lui sont associés.The attachment provided by the attachment mechanism is therefore broken, and the movable contact, released, departs from the fixed contact under the stress of the elastic opening means associated with it.

Usuellement, seuls participent ainsi à l'ouverture du contact mobile lesdits moyens élastiques d'ouverture.Usually, only participating in the opening of the movable contact said elastic opening means.

Cependant, il a déjà été proposé, et c'est le cas dans le brevet français mentionné ci-dessus, d'ajouter aux effets ainsi dus à ces moyens élastiques d'ouverture des effets directement induits par l'organe de déclenchementoHowever, it has already been proposed, and this is the case in the French patent mentioned above, to add to the effects thus due to these elastic means of opening effects directly induced by the triggering member.

C'est ainsi que, dans le brevet français mentionné ci-dessus, le contact mobile comporte un épaulement d'entraînement, sur lequel peut venir porter, pour son entraînement, un épaulement prévu à cet effet sur l'organe d'accrochage auquel il est articulé par pivot.Thus, in the French patent mentioned above, the movable contact comprises a drive shoulder, on which can come to carry, for its drive, a shoulder provided for this purpose on the attachment member to which it is articulated by pivot.

Ainsi, sous la sollicitation de l'organe de déclenchement, l'organe d'accrochage peut faire participer son propre mouvement à l'entraînement du contact mobile, son épaulement venant porter contre l'épaulement d'entraînement dudit contact mobile.Thus, under the stress of the triggering member, the latching member can involve its own movement in the driving of the movable contact, its shoulder coming to bear against the driving shoulder of said movable contact.

Mais, dans le brevet français mentionné ci-dessus, cette action d'entraînement de l'organe d'accrochage sur le contact mobile n'intervient qu'après un temps mort nécessaire pour que ledit organe d'accrochage vienne prendre appui à cet effet sur une butée fixe prévue dans ce but dans le boîtier.However, in the French patent mentioned above, this driving action of the fastening member on the movable contact intervenes only after a dead time necessary for said attachment member to come to bear for this purpose on a fixed stop provided for this purpose in the housing.

Ainsi, en raison de ce temps mort, c'est bien plus un effet d'accélération qui est appliqué au contact mobile par l'organe d'accrochage, qu'un réel effort d'arrachement.Thus, because of this dead time, it is much more an acceleration effect which is applied to the movable contact by the fastening member, than a real tearing effort.

En outre, en raison même de l'appui que trouve alors sur une butée fixe du boîtier l'organe d'accrochage, il y a une modification des conditions suivant lesquelles se déplace l'ensemble formé par cet organe d'accrochage et le contact mobile, ledit ensemble pivotant dès lors autour de la butée fixe en question du boîtier, en sorte que l'action d'entraînement exercée sur le contact mobile par l'organe d'accrochage se fait ainsi de manière moins directe.In addition, by reason of the support then found on a fixed abutment of the housing the latching member, there is a modification of the conditions according to which the assembly formed by this latching member and the contact moves. movable, said assembly therefore pivoting around the fixed stop in question of the housing, so that the driving action exerted on the movable contact by the fastening member is thus less direct.

La présente invention a d'une manière générale pour objet une disposition permettant au contraire à l'organe d'accrochage d'appliquer, à l'ouverture, au contact mobile, un réel effort d'arrachement participant activement au décollage de ce contact mobile vis-à-vis du contact fixe auquel il est jusque là appliqué, sans modification des conditions de déplacement de l'ensemble.The present invention generally relates to a provision allowing, on the contrary, the latching member to apply, upon opening, to the moving contact, a real tearing force actively participating in the takeoff of this moving contact. with respect to the fixed contact to which it has hitherto been applied, without modifying the conditions of movement of the assembly.

De manière plus précise, la présente invention a pour objet un disjoncteur dont le mécanisme d'accrochage comporte, comme mentionné ci-dessus, un organe d'accrochage mobile, sur lequel est articulé par un pivot le contact mobile, et qui est soumis à un organe de déclenchement, ledit contact mobile comportant en outre un épaulement d'entraînement sur lequel peut venir porter, pour son entraînement, un épaulement prévu à cet effet sur l'organe d'accrochage, ce disjoncteur étant caractérisé en ce que, abstraction faite de sa liaison d'articulation avec le contact mobile et de l'éventuel guidage du pivot d'articulation correspondant, l'organe d'accrochage est libre de ses déplacements dans le boîtier du disjoncteur, aucune butée fixe n'étant prévue dans celui-ci sur le trajet balayé à l'ouverture par ledit organe d'accrochage, en sorte que, dès l'ouverture, cet organe d'accrochage vient immédiatement entraîner par son épaulement le contact mobile, et ainsi appliquer à celui-ci un effort d'arrachement, sans modification de l'axe de pivotement correspondant.More specifically, the present invention relates to a circuit breaker, the latching mechanism of which comprises, as mentioned above, a movable latching member, on which the movable contact is articulated by a pivot, and which is subjected to a tripping member, said movable contact further comprising a drive shoulder on which may come, for its drive, a shoulder provided for this purpose on the latching member, this circuit breaker being characterized in that, apart from the fact of its articulation link with the movable contact and of the possible guiding of the corresponding articulation pivot, the latching member is free to move in the case of the circuit breaker, no fixed stop being provided in this- ci on the path swept at the opening by said organ fastening, so that, upon opening, this fastening member immediately drives the mobile contact by its shoulder, and thus applies a tearing force to the latter, without modifying the corresponding pivot axis .

Grâce à cette disposition, l'effort d'arrachement dû à l'organe d'accrochage, et, à travers lui, à l'organe de déclenchement, s'additionne immédiatement, et à plein effet, dès la libération du contact mobile, aux efforts d'ouverture appliqués par ailleurs à celui-ci par les moyens élastiques d'ouverture qui lui sont associés.Thanks to this arrangement, the pull-out force due to the fastening member, and, through it, to the triggering member, is added immediately, and at full effect, as soon as the movable contact is released, to the opening forces otherwise applied thereto by the elastic opening means associated therewith.

La vitesse d'ouverture du disjoncteur s'en trouve avantageusement augmentée.The opening speed of the circuit breaker is advantageously increased.

Or, ainsi qu'on le sait, le pouvoir de coupure d'un disjoncteur est, les autres conditions étant égales par ailleurs, inversement proportionnel à son temps d'ouverture.However, as we know, the breaking capacity of a circuit breaker is, the other conditions being equal, inversely proportional to its opening time.

Une augmentation de la vitesse d'ouverture permet donc d'augmenter le pouvoir de coupure du disjoncteur.An increase in the opening speed therefore makes it possible to increase the breaking capacity of the circuit breaker.

Les caractéristiques et avantages de l'invention ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence aux dessins schématiques annexés sur lesquels :

  • la figure 1 est une vue en élévation, avec arrachements locaux, d'un disjoncteur suivant l'invention dont une partie du boîtier a été supposée retirée ;
  • la figure 2 est une vue en perspective de certains des organes constitutifs de ce disjoncteur ;
  • les figures 3 et 4 sont des vues reprenant pour partie celle de la figure 1 et illustrant diverses phases de fonctionnement du disjoncteur suivant l'invention, lors de l'ouverture de celui-ci ;
  • la figure 5 est, pour une variante de réalisation du disjoncteur suivant l'invention, une vue analogue à celle de la figure 1, pour certains seulement des organes constitutifs de cette variante ;
  • la figure 6 est une vue en perspective des organes en question ;
  • la figure 7 est une vue analogue à celle de la figure 5, pour une phase de fonctionnement de la variante concernée, lors de l'ouverture de celle-ci ;
  • les figures 8 et 9 sont des vues respectivement analogues à celles des figures 5 et 6, et concernent une autre variante de réalisation ;
The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended schematic drawings in which:
  • Figure 1 is an elevational view, with parts cut away, of a circuit breaker according to the invention from which a part of the housing has been assumed to be removed;
  • Figure 2 is a perspective view of some of the components of this circuit breaker;
  • Figures 3 and 4 are views partly taking that of Figure 1 and illustrating various operating phases of the circuit breaker according to the invention, when it opens;
  • Figure 5 is, for an alternative embodiment of the circuit breaker according to the invention, a view similar to that of Figure 1, for some only of the constituent parts of this variant;
  • Figure 6 is a perspective view of the organs in question;
  • Figure 7 is a view similar to that of Figure 5, for an operating phase of the variant concerned, when the latter is opened;
  • Figures 8 and 9 are views respectively similar to those of Figures 5 and 6, and relate to another alternative embodiment;

les figures 10 et 11 sont des vues analogues à celle de la figure 8 et montrent deux phases successives du fonctionnement de cette variante de réalisation.Figures 10 and 11 are views similar to that of Figure 8 and show two successive phases of the operation of this alternative embodiment.

Ces figures illustrent à titre d'exemple l'application de l'invention à la réalisation d'un disjoncteur de type modulaire.These figures illustrate by way of example the application of the invention to the production of a modular type circuit breaker.

Un tel disjoncteur comporte d'une manière générale un boîtier 10 ; suivant des dispositions connues par elles-mêmes, et qui ne seront donc pas détaillées ici, un tel boîtier est par exemple formé de deux coquilles convenablement affrontées l'une à l'autre et convenablement liées l'une à l'autre par des vis ou rivets.Such a circuit breaker generally comprises a housing 10; according to arrangements known in themselves, and which will therefore not be detailed here, such a case is for example formed by two shells suitably facing one another and suitably linked to each other by screws or rivets.

A la figure 1, seule est visible l'une de ces coquilles, l'autre de celles-ci étant supposée enlevée.In FIG. 1, only one of these shells is visible, the other of these being assumed to be removed.

Le boîtier 10 est équipé latéralement de deux bornes de connexion 11A, 11B.The housing 10 is equipped laterally with two connection terminals 11A, 11B.

Dans le boîtier 10 s'étend une bande métallique 12A,qui appartient à la cuivrerie du disjoncteur ; à l'une de ses extrémités, cette bande 12A est en liaison électrique avec la borne 11A, et à l'autre de ses extrémités, elle délimite, conjointement avec une autre bande métallique 12B, une chambre de coupure 13 qui, dans l'exemple de réalisation représenté, est garnie de plaques d'extinction 14.In the housing 10 extends a metal strip 12A, which belongs to the copperwork of the circuit breaker; at one of its ends, this strip 12A is in electrical connection with the terminal 11A, and at the other of its ends, it delimits, jointly with another metal strip 12B, a breaking chamber 13 which, in the exemplary embodiment shown, is furnished with extinguishing plates 14.

Dans leur zone médiane, les bandes 12A, 12B constituent deux cornes d'arc 15A, 15B.In their median zone, the bands 12A, 12B constitute two arc horns 15A, 15B.

La corne d'arc 15A constitue en outre par elle-même un contact fixe, avec lequel coopère un contact mobile 16.The arcing horn 15A also constitutes by itself a fixed contact, with which a movable contact 16 cooperates.

D'une manière générale, et ainsi qu'il apparaîtra ultérieurement, ce contact mobile 16 est mobile entre une position enclenchée de fermeture, figure 1, pour laquelle il est en appui contre le contact fixe 15A, et une position déclenchée d'ouverture, figure 4, pour laquelle il est écarté de ce contact fixe 15A, et il est en permanence sollicité en direction de sa position déclenchée d'ouverture par des moyens élastiques d'ouverture, qui seront décrits ci-après.In general, and as will appear later, this movable contact 16 is movable between a posi latched closing position, Figure 1, for which it is in abutment against the fixed contact 15A, and a triggered opening position, Figure 4, for which it is moved away from this fixed contact 15A, and it is constantly urged in the direction from its triggered opening position by elastic opening means, which will be described below.

Au moins un organe de déclenchement est prévu, qui est apte à provoquer la libération du contact mobile, et donc le passage de celui-ci de sa position enclenchée à sa position déclenchée.At least one triggering member is provided, which is capable of causing the release of the movable contact, and therefore the passage of the latter from its engaged position to its triggered position.

Dans l'exemple de réalisation représenté, deux de tels organes de déclenchement sont prévus, l'un thermique, l'autre magnétique.In the embodiment shown, two such triggering members are provided, one thermal, the other magnetic.

L'organe de déclenchement thermique comporte un bilame 18 dont une extrémité 19 est fixe, tandis que l'autre 20 est libre ; par cette extrémité libre 20 le bilame 18 est relié par une tresse 21 au contact mobile 16.The thermal trip member comprises a bimetallic strip 18, one end 19 of which is fixed, while the other end 20 is free; by this free end 20 the bimetallic strip 18 is connected by a braid 21 to the movable contact 16.

L'organe de déclenchement magnétique comporte le bobinage 23 d'un circuit magnétique 24, et ce bobinage 23 est inséré en série avec le bilame 18 entre le contact mobile 16 et la borne 11B, l'une de ses extrémités étant reliée à l'extrémité fixe 19 du bilame 18 par un conducteur, non visible sur les figures, tandis que l'autre de ses extrémités est reliée par une bande métallique 22 à la borne 11B.The magnetic trip member comprises the coil 23 of a magnetic circuit 24, and this coil 23 is inserted in series with the bimetallic strip 18 between the movable contact 16 and the terminal 11B, one of its ends being connected to the fixed end 19 of the bimetallic strip 18 by a conductor, not visible in the figures, while the other of its ends is connected by a metal strip 22 to the terminal 11B.

Dans l'axe du bobinage 23 est monté mobile un noyau plongeur 25.In the axis of the winding 23 is movably mounted a plunger core 25.

Est également prévue une manette d'enclenchement et de déclenchement 26, qui est à la disposition de l'usager, à la faveur d'un passage 27 ménagé à cet effet dans la paroi de façade du boîtier 10, et qui est mobile entre une position d'enclenchement, figure 1, et une position de déclenchement, figure 4.Also provided is an interlocking and triggering lever 26, which is available to the user, thanks to a passage 27 provided for this purpose in the front wall of the housing 10, and which is movable between a position of engagement, figure 1, and a position of engagement, figure 4.

Dans l'exemple de réalisation représenté, cette manette d'enclenchement et de déclenchement 26 est rotative, étant portée par un moyeu 28 dont des tourillons, non visibles sur les figures, sont engagés à pivotement dans des logements prévus à cet effet dans le boîtier 10.In the embodiment shown, this interlocking and triggering lever 26 is rotatable, being carried by a hub 28 whose pins, not visible in the figures, are pivotally engaged in housings provided for this purpose in the housing 10.

En outre, dans cette forme de réalisation, la manette d'enclenchement et de déclenchement 26 est sollicitée en permanence en direction de sa position de déclenchement, par un ressort de torsion 29, dont une branche prend appui sur le boîtier 10 tandis que l'autre agit sur le moyeu 28.In addition, in this embodiment, the interlocking and triggering lever 26 is urged permanently towards its triggering position, by a torsion spring 29, one branch of which bears on the housing 10 while the another acts on the hub 28.

Entre la manette d'enclenchement et de déclenchement 26, d'une part, et l'un et l'autre des organes de déclenchement décrits précédemment, d'autre part, est établi un mécanisme d'accrochage, qui comporte, un organe d'accrochage 30, sur lequel le contact mobile 16 est articulé par un pivot 31, et qui est soumis à l'un et l'autre des organes de déclenchement en question, tel que décrit ci-après, un organe de manoeuvre 32, qui est lié à la manette d'enclenchement et de déclenchement 26, et un organe de retenue 33, par lequel ledit organe d'accrochage 30 est susceptible de venir en prise avec ledit organe de manoeuvre 32, tel que décrit ci-après.Between the engagement and trigger lever 26, on the one hand, and one and the other of the triggering members described above, on the other hand, is established a hooking mechanism, which comprises, a member d 'hooking 30, on which the movable contact 16 is articulated by a pivot 31, and which is subjected to one and the other of the triggering members in question, as described below, an operating member 32, which is linked to the engaging and triggering lever 26, and a retaining member 33, by which said latching member 30 is capable of coming into engagement with said operating member 32, as described below.

Dans l'exemple de réalisation représenté sur les figures 1 à 4, le contact mobile 16 porte un évidement 34, par lequel il est engagé sur l'organe d'accrochage 30, les bords longitudinaux de cet évidement 34 étant, dans leur partie médiane, conformés en gouttière, pour le logement du pivot d'articulation 31, qui traverse de part en part l'organe d'accrochage 30, et qui, à ses extrémités, est engagé dans des rainures de guidage 36 ménagées à cet effet dans le boîtier 10.In the embodiment shown in Figures 1 to 4, the movable contact 16 carries a recess 34, by which it is engaged on the latching member 30, the longitudinal edges of this recess 34 being, in their middle part , shaped as a gutter, for housing the articulation pivot 31, which passes right through the hooking member 30, and which, at its ends, is engaged in guide grooves 36 provided for this purpose in the housing 10.

Dans l'exemple de réalisation représenté sur les figures 1 à 4, les moyens élastiques d'ouverture associés au contact mobile 16 comportent un ressort de torsion 37, dont la partie médiane de torsion 38 est engagée sur le pivot 31, dont une branche 39 prend appui sur un ergot 40 assujetti de manière fixe au boîtier 10, et dont l'autre branche 41 porte sur le contact mobile 16.In the embodiment shown in FIGS. 1 to 4, the elastic opening means associated with the movable contact 16 comprise a torsion spring 37, the central torsion part 38 of which is engaged on the pivot 31, including a branch 39 is supported on a lug 40 fixedly fixed to the housing 10, and the other branch 41 of which bears on the movable contact 16.

En pratique, chacune de ces branches est dédoublée, le ressort 37 ayant globalement la configuration d'une pièce en U présentant deux ailes, qui forment les branches en question et encadrent le contact mobile 16 et l'organe d'accrochage 30, avec engagement sur le pivot 31, et une partie médiane, qui relie l'une à l'autre ces ailes et porte sur le contact mobile 16.In practice, each of these branches is split, the spring 37 generally having the configuration of a part. in U presenting two wings, which form the branches in question and frame the movable contact 16 and the hooking member 30, with engagement on the pivot 31, and a median part, which connects these wings to each other and relates to the movable contact 16.

Dans l'exemple de réalisation représenté sur les figures 1 à 4, l'organe de manoeuvre 32 est un secteur solidaire du moyeu 28 porteur de la manette d'enclenchement et de déclenchement 26, l'organe de retenue 33 est un ergot, monté mobile d'une part, par sa partie médiane, dans une boutonnière 43 du secteur 32, et d'autre part, par ses extrémités, dans des boutonnières 36 ménagées à cet effet dans le boîtier 10, et, pour coopération avec un tel organe de retenue, l'organe d'accrochage 30 présente, d'un premier côté du pivot 31, un bras 44 doté d'un cran 45 par lequel il est apte à venir en prise avec ledit organe de retenue 33 ; conjointement, la boutonnière 43 du secteur 32 constituant l'organe de manoeuvre comporte, à son extrémité, un cran 46 dans lequel peut également s'engager l'ergot constituant l'organe de retenue 33.In the embodiment shown in Figures 1 to 4, the operating member 32 is a sector integral with the hub 28 carrying the engagement and release lever 26, the retaining member 33 is a lug, mounted movable on the one hand, by its middle part, in a buttonhole 43 of the sector 32, and on the other hand, by its ends, in buttonholes 36 provided for this purpose in the housing 10, and, for cooperation with such a member retaining, the attachment member 30 has, on a first side of the pivot 31, an arm 44 provided with a notch 45 by which it is able to engage with said retaining member 33; jointly, the buttonhole 43 of the sector 32 constituting the operating member comprises, at its end, a notch 46 in which the lug constituting the retaining member 33 can also engage.

De l'autre côté du pivot 31, l'organe d'accrochage 30 présente un bras 47, qui est coudé, et dont l'extrémité se trouve en regard d'un prolongement 48 du noyau mobile 25 ; sur ce bras 47 de l'organe d'accrochage 30 est engagé un cadre 49, qui, dans la partie médiane de ses bords longitudinaux, est doté latéralement en saillie d'ergots 50 par lesquels il est monté pivotant dans des logements prévus à cet effet dans le boîtier 10, et dont les bords transversaux s'étendent, l'un en regard dudit bras 47 de l'organe d'accrochage 30, l'autre en regard de l'extrémité libre 20 du bilame 18.On the other side of the pivot 31, the hooking member 30 has an arm 47, which is bent, and the end of which is opposite an extension 48 of the movable core 25; on this arm 47 of the hooking member 30 is engaged a frame 49 which, in the middle part of its longitudinal edges, is provided laterally projecting with lugs 50 by which it is pivotally mounted in housings provided for this effect in the housing 10, and whose transverse edges extend, one facing said arm 47 of the fastening member 30, the other facing the free end 20 of the bimetallic strip 18.

Sur le bras coudé 47 de l'organe d'accrochage 30, est en outre engagé un étrier 51, dont la traverse médiane s'étend sensiblement à l'aplomb du pivot d'articulation 31, et dont les deux ailes sont solidaires d'un moyeu 52 ; les extrémités de ce moyeu 52 sont, à la manière de tourillons, montées rotatives dans des perçages, qui sont prévus à cet effet dans le boîtier 10, et qui débouchent à l'extérieur, en sorte que ledit moyeu constitue un arbre de transmission par lequel le disjoncteur peut, à l'aide d'entretoises d'accouplement non représentées, être lié à un disjoncteur voisin, ou un autre module de ce type, équipé d'un arbre de transmission semblable.On the bent arm 47 of the hooking member 30, is also engaged a stirrup 51, the median crosspiece of which extends substantially in line with the articulation pivot 31, and the two wings of which are integral with a hub 52; the ends of this hub 52 are, in the manner of journals, rotatably mounted in holes, which are provided for this purpose in the housing 10, and which open to the outside, so that said hub constitutes a drive shaft through which the circuit breaker can, using spacers coupling not shown, be linked to a neighboring circuit breaker, or another module of this type, fitted with a similar drive shaft.

Le moyeu 52 présente radialement en saillie un doigt 54, et, conjointement, en regard de ce doigt, le bras coudé 47 de l'organe d'accrochage 30 présente en saillie une patte 55.The hub 52 has a protruding finger 54 radially, and, jointly, facing this finger, the bent arm 47 of the hooking member 30 has a protruding lug 55.

Enfin, le contact mobile 16 porte un épaulement d'entraînement, sur lequel peut venir porter, pour son entraînement, un épaulement prévu à cet effet sur l'organe d'accrochage 30.Finally, the movable contact 16 carries a drive shoulder, on which can carry, for its drive, a shoulder provided for this purpose on the attachment member 30.

Dans l'exemple de réalisation représenté sur les figures 1 à 4, l'épaulement d'entraînement du contact mobile 16 est formé par la traverse 56 constituant le bord transversal de son évidement 34 opposé au contact fixe 15A, c'est-à-dire le plus éloigné de celui-ci, cette traverse 56 est décalée transversalement vis-à-vis de la partie courante du contact mobile 16, en formant par exemple, et tel que représenté, une extrémité repliée en équerre de celle-ci, et l'épaulement correspondant 58 de l'organe d'accrochage 30 est formé sur la patte 55 que présente latéralement en saillie cet organe d'accrochage.In the embodiment shown in Figures 1 to 4, the drive shoulder of the movable contact 16 is formed by the crosspiece 56 constituting the transverse edge of its recess 34 opposite the fixed contact 15A, that is to say say the farthest from the latter, this crosspiece 56 is offset transversely with respect to the current part of the movable contact 16, by forming for example, and as shown, an end folded at right angles thereto, and the corresponding shoulder 58 of the fastening member 30 is formed on the tab 55 which laterally projecting from this fastening member.

Abstraction faite de sa liaison d'articulation avec le contact mobile 16, et du guidage par rainures du pivot d'articulation 31 correspondant, l'organe d'accrochage 30 est, suivant l'invention, libre de ses déplacements dans le boîtier 10, aucune butée fixe n'étant prévue dans celui-ci sur le trajet qu'il balaye lors de l'ouverture du contact mobile 16.Apart from its articulation connection with the movable contact 16, and from the guiding by grooves of the corresponding articulation pivot 31, the attachment member 30 is, according to the invention, free to move in the housing 10, no fixed stop being provided in the latter on the path which it sweeps when the movable contact 16 opens.

Cette ouverture est par exemple provoquée par un court-circuit sur la ligne concernée, entraînant l'entrée en action du noyau mobile 25, qui, venant agir sur le bras 47 de l'organe d'accrochage 30, provoque une rotation de celui-ci autour du pivot 31This opening is for example caused by a short circuit on the line concerned, causing the moving core 25 to come into action, which, acting on the arm 47 of the fastening member 30, causes a rotation thereof around the pivot 31

Dès que cette rotation est suffisante pour que le bras 44 de l'organe d'accrochage 30 échappe à l'organe de retenue 33, figure 3, le contact mobile 16 est libéré, et, sous la sollicitation élastique du ressort 37, qui prend appui sur l'ergot fixe 40, et qui pivote donc autour de celui-ci, en raison de la tendance qu'il a à se refermer, il est entraîné en direction de sa position déclenchée d'ouverture par le pivot 31 auquel est attelé ce ressort.As soon as this rotation is sufficient for the arm 44 of the latching member 30 to escape the retaining member 33, FIG. 3, the movable contact 16 is released, and, under the elastic stress of the spring 37, which takes support on the fixed lug 40, and which therefore pivots around it, due to the tendency it has to close, it is driven towards its triggered opening position by the pivot 31 to which is coupled this spring.

Mais, suivant l'invention, conjointement, l'épaulement 58 de l'organe d'accrochage 30 est venu porter contre l'épaulement 56 du contact mobile 16, en sorte que, dès sa libération, celui-ci se trouve soumis, d'une part, aux effets d'entraînement dus au ressort 37, tel que décrit ci-dessus, et d'autre part, à un effet d'arrachement correspondant à la rotation qui, due au noyau mobile 25, et transmise de celui-ci au contact mobile 16 par l'organe d'accrochage 30, tend à faire tourner ce contact mobile 16, suivant la flèche Fl de la figure 3.However, according to the invention, jointly, the shoulder 58 of the hooking member 30 has come to bear against the shoulder 56 of the movable contact 16, so that, as soon as it is released, the latter is subjected, d on the one hand, to the drive effects due to the spring 37, as described above, and on the other hand, to a tear-off effect corresponding to the rotation which, due to and transmitted from the movable core 25 ci in movable contact 16 by the fastening member 30, tends to rotate this movable contact 16, according to arrow Fl in FIG. 3.

Ainsi ces deux effets s'additionnent et concourent conjointement à l'éloignement du contact mobile 16 vis-à-vis du contact fixe 15A.Thus these two effects add up and jointly contribute to the distance of the movable contact 16 from the fixed contact 15A.

Au terme de cet éloignement, le contact mobile 16 atteint sa position déclenchée d'ouverture, figure 4, et conjointement, sous la sollicitation de son ressort 29, la manette d'enclenchement et de déclenchement 26 atteint également sa position de déclenchement représentée sur cette figure, l'organe de retenue 33, précédemment libéré, ayant échappé au cran 46 de la boutonnière 43.At the end of this distance, the movable contact 16 reaches its triggered opening position, FIG. 4, and jointly, under the stress of its spring 29, the engagement and trigger lever 26 also reaches its triggering position shown on this Figure, the retaining member 33, previously released, having escaped the notch 46 of the buttonhole 43.

En outre, lors de son déplacement, l'organe d'accrochage 30 vient agir sur la traverse de l'étrier 51, ce qui provoque la rotation de l'arbre de transmission que constitue le moyeu 52, suivant la flèche F2 de la figure 4.In addition, during its movement, the latching member 30 acts on the cross member of the stirrup 51, which causes the rotation of the transmission shaft that constitutes the hub 52, according to arrow F2 in the figure. 4.

De disjoncteur en disjoncteur ou autre module voisin, se produit de manière concomitante une rotation semblable des arbres de transmission correspondants, en raison des entretoises d'accouplement liant deux à deux de tels arbres, comme mentionné ci-dessus, et, pour chacun de ces disjoncteurs ou autres modules voisins, le doigt 54 d'un tel arbre de transmission vient agir sur la patte 55 de l'organe d'accrochage, ce qui assure le pivotement de celui-ci et donc la libération du contact mobile correspondant, suivant un processus analogue à celui décrit ci-dessus.From circuit breaker to circuit breaker or other neighboring module, a similar rotation occurs concomitantly corresponding drive shafts, due to the coupling spacers connecting two to two of such shafts, as mentioned above, and, for each of these circuit breakers or other neighboring modules, the finger 54 of such a drive shaft comes act on the lug 55 of the attachment member, which ensures the pivoting thereof and therefore the release of the corresponding movable contact, according to a process analogous to that described above.

D'un disjoncteur au disjoncteur ou autre module voisin, il y a ainsi un déclenchement multipolaire en cascade de l'ensemble.From a circuit breaker to the circuit breaker or other neighboring module, there is thus a cascaded multipolar trip of the assembly.

Par retour en position d'enclenchement de la manette d'enclenchement et de déclenchement 26, suivant la flèche F3 de la figure 4, le contact mobile 16 est ramené en position de fermeture, et l'organe d'accrochage 30 vient à nouveau en prise par son cran 45 avec l'élément de retenue 33, et par celui-ci, avec le secteur 32 constituant l'organe de manoeuvre associé, l'organe de retenue 33 tombant à nouveau en fin de course dans le cran terminal 46 de la boutonnière 43 de ce secteur 32.By returning to the engagement position of the engagement and trigger lever 26, according to arrow F3 in FIG. 4, the movable contact 16 is brought back to the closed position, and the attachment member 30 again comes in taken by its notch 45 with the retaining element 33, and by the latter, with the sector 32 constituting the associated operating member, the retaining member 33 falling again at the end of the travel in the terminal notch 46 of the buttonhole 43 in this sector 32.

Si c'est le bilame 18 qui entre en action, un processus analogue à celui décrit ci-dessus se déclenche, ce bilame 18 provoquant par son extrémité libre 20 le pivotement du cadre 49, et celui-ci provoquant à son tour le pivotement de l'organe d'accrochage 30.If it is the bimetallic strip 18 which comes into action, a process analogous to that described above is triggered, this bimetallic strip 18 causing its free end 20 to pivot the frame 49, and this in turn causing the pivoting of the attachment member 30.

Dans ce qui précède, la rotation du contact mobile 16 sous la poussée de l'organe d'accrochage 30, suivant la flèche Fl de la figure 3, se fait à l'encontre du ressort 37, puisqu'elle tend à provoquer une ouverture de ce ressort.In the foregoing, the rotation of the movable contact 16 under the thrust of the latching member 30, along the arrow Fl of Figure 3, is against the spring 37, since it tends to cause an opening of this spring.

On décrira maintenant, en référence aux figures 5 à 11, deux variantes de réalisation dans lesquelles cette action antagoniste du ressort 37 se trouve annulée.We will now describe, with reference to Figures 5 to 11, two alternative embodiments in which this antagonistic action of the spring 37 is canceled.

Dans chacune de ces variantes, pour lesquelles les mêmes éléments ont reçu les mêmes références, le ressort de torsion 37 a sa partie médiane de torsion 38 engagée sur un bossage fixe 53 du boîtier associé, tandis que celle 41 de ses branches qui agit sur le contact fixe 16, dite ci-après branche d'action, constitue conjointement un ressort de flexion, et est à cet effet en prise, dans sa partie médiane, avec un ergot d'appui 59.In each of these variants, for which the same elements have been given the same references, the torsion spring 37 has its central torsion part 38 engaged on a fixed boss 53 of the associated housing, while that 41 of its branches which acts on the fixed contact 16, hereinafter called the action branch, jointly constitutes a bending spring, and is for this purpose engaged, in its middle part , with a support lug 59.

Dans la forme de réalisation représentée sur les figures 5 à 7, cet ergot d'appui 59 est porté par le contact mobile 16 et, celui-ci ayant la configuration générale d'une pièce en U, constitue une traverse reliant l'un à l'autre les deux flasques 60 de cette pièce.In the embodiment shown in FIGS. 5 to 7, this support lug 59 is carried by the movable contact 16 and, the latter having the general configuration of a U-shaped part, constitutes a crosspiece connecting one to the other the two flanges 60 of this piece.

La branche 41 du ressort de torsion 37 passe au-dessus de cette traverse 59, et au-dessous de la partie médiane 61 du contact mobile 16 reliant l'un à l'autre les flasques 60 de celui-ci à l'une de leurs extrémités.The branch 41 of the torsion spring 37 passes above this cross-member 59, and below the middle part 61 of the movable contact 16 connecting the flanges 60 thereof to one another to one of their ends.

En outre, dans cette forme de réalisation, l'ergot d'appui 59 constitue conjointement l'épaulement d'entraînement du contact mobile 16, l'organe d'accrochage 30 présentant, en regard de cet ergot d'appui 59, une échancrure, par laquelle il peut venir en prise avec celui-ci, et formant ainsi l'épaulement 58 correspondant.In addition, in this embodiment, the support lug 59 jointly constitutes the drive shoulder of the movable contact 16, the latching member 30 having, facing this support lug 59, a notch , by which it can engage therewith, and thus forming the corresponding shoulder 58.

Lorsque le contact mobile 16 est en position enclenchée de fermeture, figure 5, la branche 41 du ressort 37 est fléchie, ou, autrement dit, présente une flèche, son extrémité libre étant en appui contre le contact mobile 16, et, à travers lui, contre le contact fixe 15A, d'un premier côté, tandis que sa partie médiane se trouve, de l'autre côté, en appui contre l'ergot d'appui 59 de ce contact mobile 16.When the movable contact 16 is in the closed closing position, FIG. 5, the branch 41 of the spring 37 is bent, or, in other words, has an arrow, its free end being in abutment against the movable contact 16, and, through it , against the fixed contact 15A, on a first side, while its middle part is, on the other side, in abutment against the support lug 59 of this movable contact 16.

Autrement dit, le ressort 37 agit sur l'ergot 59 dans un sens qui est le même que celui suivant lequel vient par ailleurs agir, suivant un processus analogue à celui décrit ci-dessus, lors de l'ouverture du contact mobile 16, l'organe d'accrochage 30.In other words, the spring 37 acts on the lug 59 in a direction which is the same as that in which it also acts, according to a process analogous to that described above, when the movable contact 16 is opened. hooking member 30.

Ainsi, à cette ouverture, l'organe d'accrochage 30, dans sa rotation, vient, par son épaulement 58, en prise avec l'ergot d'appui 59, et, entraînant celui-ci, provoque l'annulation de la flexion de la branche 41 du ressort 37, figure 7, et ce ressort 37 n'oppose dès lors aucun effort antagoniste à l'effort d'arrachement induit directement sur le contact mobile 16 par l'organe d'accrochage 30.Thus, at this opening, the latching member 30, in its rotation, comes, through its shoulder 58, in engagement with the lug 59, and, driving the latter, causes the cancellation of the bending of branch 41 of spring 37, FIG. 7, and this spring 37 therefore does not oppose any opposing force against the tearing-off force induced directly on the movable contact 16 by the attachment member 30.

Cet effort d'arrachement additionne donc ses effets à l'effort d'entraînement dû par ailleurs à la partie médiane de torsion 38 du ressort 37.This pulling force therefore adds its effects to the driving force due moreover to the central torsional part 38 of the spring 37.

Suivant la variante de réalisation illustrée par les figures 8 à 11, l'ergot d'appui 59 forme une pièce indépendante, montée mobile dans des rainures de guidage 63 du boîtier associé, et l'organe d'accrochage 30 comporte, pour appui temporaire escamotable de cet ergot d'appui 59, un deuxième épaulement 64.According to the variant embodiment illustrated in FIGS. 8 to 11, the support lug 59 forms an independent part, movably mounted in guide grooves 63 of the associated housing, and the attachment member 30 comprises, for temporary support retractable from this support lug 59, a second shoulder 64.

Par son premier épaulement 58, il est, comme précédemment, en mesure de venir agir sur un épaulement d'entraînement prévu à cet effet sur le contact mobile 16, épaulement d'entraînement qui, dans l'exemple de réalisation représenté, est constitué par un ergot 65 porté en saillie par ce contact mobile 16.By its first shoulder 58, it is, as previously, able to act on a drive shoulder provided for this purpose on the movable contact 16, drive shoulder which, in the embodiment shown, is constituted by a lug 65 projecting from this movable contact 16.

En outre, dans l'exemple de réalisation représenté, la branche d'action 41 du ressort de torsion'37, qui, comme précédemment, constitue un ressort de flexion, est, par un retour 70 de son extrémité libre, engagée dans une rainure 71 du contact mobile 16.Furthermore, in the embodiment shown, the action branch 41 of the torsion spring 37, which, as before, constitutes a bending spring, is, by a return 70 from its free end, engaged in a groove 71 of the mobile contact 16.

Dans cette variante, par ailleurs, la manette d'enclenchement et de déclenchement qui est schématisée en traits fins sur les figures, sous la référence générale 126, est différente de celle mise en oeuvre précédemment : elle a la forme d'une chape, dont la partie médiane, qui est externe, forme le moyen de préhension à la disposition de l'usager, et dont les branches, qui sont internes et encadrent le mécanisme d'accrochage, portent chacune à leur extrémité libre un tourillon 128.In this variant, moreover, the interlocking and tripping lever which is shown diagrammatically in fine lines in the figures, under the general reference 126, is different from that implemented previously: it has the shape of a yoke, of which the middle part, which is external, forms the gripping means available to the user, and the branches of which, which are internal and frame the hooking mechanism, each carry at their free end a pin 128.

Un renflement 132 de ces branches forme l'organe de manoeuvre lié à une telle manette, ce renflement comportant un épaulement 146 pour coopération avec l'organe de retenue par lequel l'organe d'accrochage 30 est susceptible de venir en prise avec cette manette.A bulge 132 of these branches forms the operating member linked to such a lever, this bulge comprising a shoulder 146 for cooperation with the retaining member by which the latching member 30 is likely to come engaged with this controller.

Mais, dans cette variante, cet organe de retenue est constitué par le pivot 31 par lequel le contact mobile 16 est articulé à l'organe d'accrochage 30.However, in this variant, this retaining member is constituted by the pivot 31 by which the movable contact 16 is articulated to the attachment member 30.

Comme précédemment, pour la position enclenchée de fermeture du contact mobile 16, figure 8, la branche d'action 41 du ressort 37 est fléchie.As before, for the engaged position for closing the movable contact 16, FIG. 8, the action branch 41 of the spring 37 is bent.

A l'ouverture, figure 10, l'organe d'accrochage 30 tourne d'abord autour du pivot 31, celui-ci étant momentanément retenu par la manette d'enclenchement et de déclenchement 126, et cette rotation de l'organe d'accrochage 30 provoque la libération de l'ergot d'appui 59, l'épaulement 64 de l'organe d'accrochage 30 venant échapper à celui-ci ; du fait de l'escamotage qui en résulte pour l'ergot d'appui 59, la flexion de la branche d'action 41 du ressort 37 se trouve annulée.At the opening, FIG. 10, the attachment member 30 first rotates around the pivot 31, the latter being momentarily retained by the engagement and trigger lever 126, and this rotation of the member hooking 30 causes the release of the support lug 59, the shoulder 64 of the hooking member 30 escaping therefrom; due to the resulting retraction for the support lug 59, the bending of the action branch 41 of the spring 37 is canceled.

Conjointement, par son épaulement 58, qui vient en prise avec l'ergot 65 constituant l'épaulement d'entraînement du contact mobile 16, l'organe d'accrochage 30 provoque, comme précédemment, l'entraînement en rotation de ce contact mobile 16.Jointly, by its shoulder 58, which engages the lug 65 constituting the drive shoulder of the movable contact 16, the latching member 30 causes, as before, the rotational drive of this movable contact 16 .

Ainsi, à l'ouverture, celui-ci n'a d'abord dans ce cas qu'un mouvement de rotation autour du pivot 31, lorsqu'est cassé, comme décrit ci-dessus, l'accrochage précédemment assuré par l'épaulement 64 de l'organe d'accrochage 30.Thus, upon opening, the latter only initially has a rotational movement around the pivot 31, when, as described above, the attachment previously assured by the shoulder is broken. 64 of the attachment member 30.

Ce n'est dès lors qu'après la rotation de la manette d'enclenchement et de déclenchement 126 que le pivot 31 peut se déplacer dans les boutonnières 36 du boîtier, figure 11.It is therefore only after the rotation of the engagement and trigger lever 126 that the pivot 31 can move in the buttonholes 36 of the housing, FIG. 11.

Le retour en position initiale de la manette d'enclenchement et de déclenchement 126 assure comme précédemment la fermeture du contact mobile et un nouvel accrochage de l'ensemble dans cette position de fermeture, le renflement 132 des branches de cette manette coopérant à cet effet avec le pivot 31.The return to the initial position of the engagement and release handle 126 ensures, as before, the closing of the movable contact and a new attachment of the assembly in this closed position, the bulge 132 of the branches of this handle cooperating for this purpose with pivot 31.

Quoi qu'il en soit, grâce à l'escamotage à l'ouverture de l'ergot d'appui 59, le contact mobile 16 n'est soumis à l'ouverture qu'aux seuls effets du ressort 37 qui lui sont appliqués par l'extrémité de la branche 41 de celui-ci, à l'exclusion des effets de ce ressort qui lui étaient précédemment appliqués par l'intermédiaire de l'ergot d'appui 59.Anyway, thanks to the retraction at the opening of the support lug 59, the movable contact 16 is subjected to the opening only to the effects of the spring 37 which are applied to it by the end of the branch 41 thereof, excluding effects of this spring which were previously applied to it via the support lug 59.

Suivant une variante de réalisation non représentée, une telle disposition est appliquée au cas où, comme dans les formes de réalisation des figures 1 à 7, l'accrochage se fait entre l'organe d'accrochage 30 et un organe de retenue 33 distinct du pivot 31.According to an alternative embodiment not shown, such an arrangement is applied in the case where, as in the embodiments of FIGS. 1 to 7, the attachment is made between the attachment member 30 and a retaining member 33 separate from the pivot 31.

Bien entendu, la présente invention ne se limite d'ailleurs pas aux formes de réalisation décrites et représentées, mais englobe toute variante d'exécution.Of course, the present invention is not limited moreover to the embodiments described and shown, but encompasses any variant.

En particulier, si, dans ce qui précède, et notamment dans les formes de réalisation des figures 1 à 7, le mécanisme d'accrochage est, comme décrit dans le brevet français N° 75 34575 mentionné ci-dessus, du type comprenant un organe de retenue monté mobile dans des rainures du boîtier, il pourrait tout aussi bien être d'un autre type, et par exemple du type du mécanisme d'accrochage à élément de roulement libre décrit dans la demande de brevet français enregistrée le 22 mars 1978 sous le N° 78 08263, dans laquelle l'élément de retenue est un élément de roulement libre..In particular, if, in the foregoing, and in particular in the embodiments of FIGS. 1 to 7, the attachment mechanism is, as described in the French patent No. 75 34575 mentioned above, of the type comprising a member retainer mounted movable in grooves of the housing, it could just as easily be of another type, and for example of the type of latching mechanism with free rolling element described in the French patent application registered on March 22, 1978 under No. 78 08263, in which the retaining element is a free rolling element.

Claims (8)

1. Disjoncteur, du genre comportant, dans un boîtier (10), un premier contact (15A), qui est fixe, un deuxième contact (16), qui est mobile entre une position enclenchée de fermeture et une position déclenchée d'ouverture, et qui est sollicité en direction de sa position déclenchée par des moyens élastiques d'ouverture, un quelconque organe de déclenchement (18,23), qui est apte à provoquer la libération dudit contact mobile (16), et donc le passage de celui-ci de sa position enclenchée à sa position déclenchée, et un mécanisme d'accrochage comportant un organe d'accrochage mobile (30), sur lequel est articulé par un pivot (31) le contact mobile (16), et qui est soumis audit organe de déclenchement (18,23), ledit contact mobile (16) comportant en outre un épaulement d'entraînement (56) sur lequel peut venir porter, pour son entraînement, un épaulement (58) prévu à cet effet sur l'organe d'accrochage (30), caractérisé en ce que, abstraction faite de sa liaison d'articulation avec le contact mobile (16) et de l'éventuel guidage du pivot d'articulation (31) correspondant, l'organe d'accrochage (30) est libre de ses déplacements dans le boîtier (10), aucune butée fixe n'étant prévue dans celui-ci sur le trajet balayé à l'ouverture par ledit organe d'accrochage (30), en sorte que, dès l'ouverture, il vient immédiatement entraîner par son épaulement (58) le contact mobile (16) et ainsi appliquer à celui-ci un effort d'arrachement.1. Circuit breaker, of the type comprising, in a housing (10), a first contact (15A), which is fixed, a second contact (16), which is movable between a latched closed position and a latched open position, and which is biased towards its position triggered by elastic opening means, any trigger member (18,23), which is capable of causing the release of said movable contact (16), and therefore the passage of it ci from its engaged position to its triggered position, and a latching mechanism comprising a movable latching member (30), on which is articulated by a pivot (31) the movable contact (16), and which is subjected to said member trigger (18,23), said movable contact (16) further comprising a drive shoulder (56) on which can come to carry, for its drive, a shoulder (58) provided for this purpose on the member attachment (30), characterized in that, apart from its articulation connection with the con movable tact (16) and of the possible guiding of the corresponding articulation pivot (31), the fastening member (30) is free to move in the housing (10), no fixed stop being provided in the latter on the path swept at the opening by said hooking member (30), so that, upon opening, it immediately comes to move its shoulder (58) the movable contact (16) and thus apply to this one an effort of pulling out. 2. Disjoncteur suivant la revendication 1, dans lequel le contact mobile (16) comporte un évidement (34), par lequel il est engagé sur l'organe d'accrochage (30), et dont le bord transversal opposé au contact fixe comporte une traverse (56) formant l'épaulement d'entraînement dudit contact mobile (16), caractérisé en ce que, conjointement, ladite traverse (56) est décalée transversalement vis-à-vis de la partie courante du contact mobile (16), par exemple par pliage, et l'épaulement correspondant (58) de l'organe d'accrochage (30) est formé sur une patte (55) que celui-ci présente en saillie à cet effet.2. A circuit breaker according to claim 1, in which the movable contact (16) comprises a recess (34), by which it is engaged on the latching member (30), and whose transverse edge opposite to the fixed contact comprises a cross member (56) forming the drive shoulder of said movable contact (16), characterized in that, jointly, said cross member (56) is offset transversely with respect to the current part of the movable contact (16), by example by folding, and the corresponding shoulder (58) of the hooking member (30) is formed on a tab (55) which the latter projects for this purpose. 3. Disjoncteur suivant la revendication 1, dans lequel les moyens élastiques d'ouverture du contact mobile (16) comportent un ressort de torsion (37) dont une (41) des branches, dite ci-après branche d'action, est en prise par son extrémité avec ledit contact mobile (16), tandis que l'autre (39) est en appui contre une butée fixe (40) du boîtier (10), caractérisé en ce que ladite branche d'action (41) constitue conjointement un ressort de flexion et est à cet effet en prise, dans sa partie médiane, avec un ergot d'appui (59).3. Circuit breaker according to claim 1, in which the elastic means for opening the movable contact (16) comprise a torsion spring (37) of which one (41) of the branches, called hereinafter the branch of action, is engaged. by its end with said movable contact (16), while the other (39) bears against a fixed stop (40) of the housing (10), characterized in that said action branch (41) jointly constitutes a bending spring and is for this purpose engaged, in its middle part, with a support lug (59). 4. Disjoncteur suivant la revendication 3, caractérisé en ce que ledit ergot d'appui (59) est porté par le contact mobile (16).4. Circuit breaker according to claim 3, characterized in that said support lug (59) is carried by the movable contact (16). 5. Disjoncteur suivant la revendication 4, caractérisé en ce que ledit ergot d'appui (59) constitue en outre l'épaulement d'entraînement du contact mobile (16).5. Circuit breaker according to claim 4, characterized in that said support lug (59) further constitutes the drive shoulder of the movable contact (16). 6. Disjoncteur suivant la revendication 3, caractérisé en ce que ledit ergot d'appui (59) est monté mobile dans des rainures de guidage (63) du boîtier (10), et l'organe d'accrochage (30) comporte, pour son appui temporaire escamotable, un deuxième épaulement (64).6. Circuit breaker according to claim 3, characterized in that said support lug (59) is movably mounted in guide grooves (63) of the housing (10), and the latching member (30) comprises, for its retractable temporary support, a second shoulder (64). 7. Disjoncteur suivant la revendication 6, dans lequel le mécanisme d'accrochage comporte un organe de manoeuvre(132), qui est lié à une manette d'enclenchement et de déclenchement mobile (126) à la disposition de l'usager, et un organe de retenue, par lequel l'organe d'accrochage (30) est susceptible de venir en prise avec ledit organe de manoeuvre (132), caractérisé en ce que ledit organe de retenue est constitué par le pivot (31) par lequel le contact mobile (16) est articulé à l'organe d'accrochage (30).7. A circuit breaker according to claim 6, in which the latching mechanism comprises an operating member (132), which is linked to a movable latching and tripping lever (126) available to the user, and a retaining member, by which the latching member (30) is capable of coming into engagement with said operating member (132), characterized in that said retaining member is constituted by the pivot (31) by which the movable contact (16) is articulated to the latching member (30) . 8. Disjoncteur suivant l'une quelconque des revendications 3 à 7, caractérisé en ce que la partie médiane de torsion du ressort de torsion (37) formant les moyens élastiques d'ouverture du contact mobile (16) est engagée sur un bossage fixe (53) du boîtier (10).8. Circuit breaker according to any one of claims 3 to 7, characterized in that the central torsion part of the torsion spring (37) forming the elastic means for opening the movable contact (16) is engaged on a fixed boss ( 53) of the housing (10).
EP79400576A 1978-08-25 1979-08-16 Circuit breaker with a movable contact pivotally mounted on a movable latch member Ceased EP0008558A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7824657A FR2434473A1 (en) 1978-08-25 1978-08-25 MOBILE CIRCUIT BREAKER ARTICULATED BY PIVOT TO A HANGING MEMBER HIMSELF MOBILE
FR7824657 1978-08-25

Publications (1)

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EP0008558A1 true EP0008558A1 (en) 1980-03-05

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EP79400576A Ceased EP0008558A1 (en) 1978-08-25 1979-08-16 Circuit breaker with a movable contact pivotally mounted on a movable latch member

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EP (1) EP0008558A1 (en)
FR (1) FR2434473A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577712A1 (en) * 1985-02-14 1986-08-22 Telemecanique Electrique PROTECTION SWITCH
EP0335774A1 (en) * 1988-03-30 1989-10-04 Hager Electro S.A. Tripping magnet for a circuit breaker
FR2646015A1 (en) * 1989-04-18 1990-10-19 Gec Unelec ELECTRIC CIRCUIT BREAKER
EP0444010A2 (en) * 1990-02-19 1991-08-28 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Switch latch for fault-current protective switch
EP0515292A1 (en) * 1991-05-21 1992-11-25 Schneider Electric Sa Electromagnetic trip device for a low current circuit breaker
EP0986083A2 (en) * 1998-09-08 2000-03-15 GEWISS S.p.A. Magnetothermal circuit breaker

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR962941A (en) * 1947-12-09 1950-06-23
DE1906369A1 (en) * 1969-02-08 1970-09-03 Bbc Brown Boveri & Cie Current-limiting switch with impact armature
DE2124353A1 (en) * 1971-05-17 1972-11-30 Geyer Fa Christian Mechanism for automatic switch
FR2331879A1 (en) * 1975-11-13 1977-06-10 Legrand Sa CIRCUIT BREAKER, IN PARTICULAR MULTIPOLAR CIRCUIT BREAKER

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR962941A (en) * 1947-12-09 1950-06-23
DE1906369A1 (en) * 1969-02-08 1970-09-03 Bbc Brown Boveri & Cie Current-limiting switch with impact armature
DE2124353A1 (en) * 1971-05-17 1972-11-30 Geyer Fa Christian Mechanism for automatic switch
FR2331879A1 (en) * 1975-11-13 1977-06-10 Legrand Sa CIRCUIT BREAKER, IN PARTICULAR MULTIPOLAR CIRCUIT BREAKER

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2577712A1 (en) * 1985-02-14 1986-08-22 Telemecanique Electrique PROTECTION SWITCH
EP0193440A1 (en) * 1985-02-14 1986-09-03 Telemecanique Protective switch
EP0335774A1 (en) * 1988-03-30 1989-10-04 Hager Electro S.A. Tripping magnet for a circuit breaker
FR2629633A1 (en) * 1988-03-30 1989-10-06 Hager Electro MAGNETIC TRIGGER FOR CIRCUIT BREAKER
FR2646015A1 (en) * 1989-04-18 1990-10-19 Gec Unelec ELECTRIC CIRCUIT BREAKER
EP0393566A1 (en) * 1989-04-18 1990-10-24 G.E.C. Unelec Circuit breaker
EP0444010A2 (en) * 1990-02-19 1991-08-28 Felten & Guilleaume Fabrik elektrischer Apparate Aktiengesellschaft Switch latch for fault-current protective switch
EP0444010A3 (en) * 1990-02-19 1992-05-13 Felten & Guilleaume Ag Oester Switch latch for fault-current protective switch
TR25103A (en) * 1990-02-19 1992-11-01 Felten & Guilleaume Ag Oester A CURRENT CURRENT SAFETY SALTER SPECIAL CIRCUIT LOCK
AU636708B2 (en) * 1990-02-19 1993-05-06 Felten & Guilleaume Fabrik Elektrischer Apparate Aktiengesellschaft Switch lock for a fault current circuit breaker
EP0515292A1 (en) * 1991-05-21 1992-11-25 Schneider Electric Sa Electromagnetic trip device for a low current circuit breaker
FR2676860A1 (en) * 1991-05-21 1992-11-27 Merlin Gerin ELECTROMAGNETIC TRIGGER FOR A LOW CALIBER ELECTRIC CIRCUIT BREAKER.
EP0986083A2 (en) * 1998-09-08 2000-03-15 GEWISS S.p.A. Magnetothermal circuit breaker
EP0986083A3 (en) * 1998-09-08 2000-08-09 GEWISS S.p.A. Magnetothermal circuit breaker

Also Published As

Publication number Publication date
FR2434473A1 (en) 1980-03-21
FR2434473B1 (en) 1981-07-17

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