EP0053973A1 - Miniature circuit breaker with high rupture capacity - Google Patents

Miniature circuit breaker with high rupture capacity Download PDF

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Publication number
EP0053973A1
EP0053973A1 EP81401899A EP81401899A EP0053973A1 EP 0053973 A1 EP0053973 A1 EP 0053973A1 EP 81401899 A EP81401899 A EP 81401899A EP 81401899 A EP81401899 A EP 81401899A EP 0053973 A1 EP0053973 A1 EP 0053973A1
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EP
European Patent Office
Prior art keywords
circuit breaker
housing
contacts
chambers
contact
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.)
Granted
Application number
EP81401899A
Other languages
German (de)
French (fr)
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EP0053973B1 (en
Inventor
Gérard Terrier
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.)
Merlin Gerin SA
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Merlin Gerin SA
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2066—Fork-shaped bridge; Two transversally connected contact arms bridging two fixed contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/04—Co-operating contacts of different material
    • 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
    • H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/025—Composite material having copper as the basic material
    • 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
    • H01H71/121—Protection of release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • Miniature circuit breakers are frequently used for the protection of terminal electrical distribution circuits, and the increase in installed power has created the need for circuit breakers with high breaking capacity.
  • An increase in breaking capacity can be obtained by connecting two circuit breakers in series unipolar, but the size and cost is thus doubled. It has already been proposed to house inside a same housing a contact system ensuring a double break and allowing an increase in the breaking capacity (French patent No. 2,154,628).
  • Miniature circuit breakers belong to modular systems of electrical devices all having the same profile to be placed side by side on a support in a manner well known to specialists. The structure and arrangement of the components of the aforementioned known miniature circuit breaker do not allow compliance with the standardized dimensions of the modules, and the present invention aims to allow the realization of a miniature circuit breaker with reduced overall dimensions and high breaking capacity.
  • the circuit breaker according to the invention is characterized in that said two cut-off camber with associated contacts occupy substantially the entire width and length of said lower housing part, the su- part - Stainlesseure receiving mechanism and the coil of the magnetic trip device common to the two cut-off intervals and each occupying the entire width of the housing, the coil being interposed between the cut-off chambers and the mechanism extending parallel to said sheets, and that said contact support fork connecting the movable contacts to the mechanism extends at the front and in a substantially perpendicular direction of said coil.
  • the miniature circuit breaker according to the invention retains the general structure of the circuit breaker commercially known as C 32 and described in French patent No. 2,344,949, only the width of the housing being increased and increased to 25 mm, so as to have space sufficient for the side-by-side accommodation of the two breaking chambers and the magnetic release coil of increased section.
  • the auxiliaries, in particular the differential protection unit, the remote opening control of the C 32 circuit breaker and / or its auxiliary contacts can thus be associated without any modification to the circuit breaker according to the invention, to carry out the differential protection and / or remote opening control and signaling.
  • the two breaking chambers are separated by an insulating partition avoiding any untimely initiation and in the insulating partition is inserted a metal plate forming a screen extending to form a fixing lug for the bimetallic strip.
  • the dual function of the metal plate, in this case screen and support of the bimetal strip, makes it possible to free the latter of any deformation of the housing subjected to overheating and stresses and to avoid any adjustment of the triggering threshold .
  • the metal plate for separating the breaking chambers is arranged to constitute a shunt conductor for the magnetic trip device and the thermal trip device as soon as the arc drawn between the separated contacts is formed.
  • the metal plate is extended on the side of the contacts and is - shaped as an arc horn on which the arc switches as soon as it forms in a manner well known per se.
  • the magnetic trip unit acts by means of a striker directly on the contact fork to accelerate the movement of the latter in the opening direction, it is known to surround the coil of the trip device by a magnetic flux closing carcass.
  • the metal carcass does not necessarily extend over all the faces of the coil, and according to a development of the invention, the face adjacent to the breaking chambers is open, so as to reduce the overall height.
  • the opposite face is advantageously also open for the same reason.
  • a housing 10 made of molded insulating material, consists of two half-shells 12, 14, assembled by rivets.
  • the housing 10 has a generally parallelepiped shape of small width, in particular of 25 mm.
  • the housing 10 has a base 16 for fixing on a mounting rail and a front face 18, pre - sensing a portion of light of a manual control switch 20.
  • a base 16 for fixing on a mounting rail and a front face 18, pre - sensing a portion of light of a manual control switch 20.
  • On the narrow side faces 22, 24 of the housing 10 are disposed the terminals 26, 28 input and output of the circuit breaker, housed inside the housing (fig. 5).
  • the lower part of the housing 10 adjacent to the bottom 16 is subdivided into two parts by an insulating partition 30 extending in the median plane of the housing 10.
  • an insulating partition 30 extending in the median plane of the housing 10.
  • a metal plate 32 is inserted inside the insulating partition 30 in two adjoining parts.
  • breaking chambers 34, 36 On either side of the insulating partition 30 are symmetrically arranged breaking chambers 34, 36, constituted by a stack of deionization sheets 38 extending parallel to the bottom 16.
  • the insulating partition 30 extends from both sides other of the breaking chambers 3 4 , 3.6 to separate on the one hand two arc forming chambers 40, 42, located in front of the interrupting chambers 34, 36 and on the other hand of the interrupting gas exhaust conduits 44.
  • Electrodes 56, 58 extend the fixed contacts 46, 48 for connection to the end plates of the interrupting chambers 34, 36.
  • the electrode 58 is connected directly to the fixed contact 48 without any continuity solution while the electrode 56 is separated from the fixed contact 46 by an insulating gap 60.
  • the electrode 56 is electrically connected to the plate 32 by means of a folded tab 62 of the latter.
  • the magnetic trigger 64 comprises a coil 68 with an axis parallel to the sheets 38, the coil 68 being surrounded by a metal carcass 70 having two large lateral faces 72, 74, attached to the shells 12, 14 and fixed to the latter by tenons 76 fitted into slots 78.
  • the carcass 70 does not extend on the lower faces and higher of the coil 68, respectively opposite the chambers 34, 36 and of the mechanism 66, so as to reduce the overall dimensions in height of the magnetic trip device 64.
  • a plunger core 80 mounted to slide axially in the coil 68, carries a extractor 82 acting on the contact-carrying fork 54 and actuating a pusher 84 acting on a trigger bar 86 of the mechanism 66.
  • the trigger bar 86 can also be actuated by a thermal trigger, constituted by a bimetallic strip 88.
  • the control mechanism 66 is of the type described in the aforementioned French patent No. 2,344,949, which will advantageously be referred to for further details. Only the dimensions of the constituent parts of the mechanism 66 have been increased to resist the increased operating force by the presence of a double cut.
  • the contact-carrying fork 54 is articulated on a cradle 90 mounted for rotation on a fixed axis 92 and controlled by a connecting rod 94 articulated by its end opposite to the lever 20.
  • a hook 96 mounted for rotation on a fixed axis 98, cooperates by one of its ends with the trigger bar 86 and by its opposite end. with the contact-carrying fork 54 to constitute a hooking.
  • the mechanism 66 naturally includes return and contact pressure springs (not shown), the assembly being arranged in such a way that a pivoting of the lever 20 causes the cradle 90 to tilt and move to the open position. or closing contacts 46, 50; 48, 52, of the contact-carrying fork 54.
  • An actuation of the trigger bar 86 by the magnetic trip device 64 or the bimetallic strip 88 releases the hook 96 and unlocks the contact-carrying fork 54, which moves in the direction opening under the action of a return spring (not shown).
  • the control mechanism and its operation are well known to specialists.
  • the bimetallic strip 88 is fixed by means of a support 100 to a lug 102, constituted by an extension of the plate 32 inserted in the central insulating partition 30.
  • the intermediate piece 100 of elongated shape is fixed by one of its ends, for example by crimping, on the tab 102, while the opposite end cooperates with an adjusting screw 104 screwed into an orifice formed in an extension 106 of the tab 102. It is easy to understand that the screwing or the unscrewing the adjusting screw 104 causes a deformation of the intermediate piece 100, and therefore a displacement of the free end of the bimetallic strip 88 in approach or spacing of the trigger lever 86 in a manner well known to specialists. It should be noted that the fixing the bimetallic strip 88 and its adjustment device 104 is independent of the housing 10, the assembly being carried by the metal plate 32.
  • the terminal 26 is connected to the fixed contact 48, the fork 54 constituting a contact bridge cooperating respectively with the fixed contacts 48, 46.
  • the fixed contact 46 is connected to the input of the coil 68, the output of the latter being connected by a braid 108 to the free end of the bimetallic strip 88.
  • the plate 32 is connected to the terminal 28.
  • the housing 10 can be made of thermoplastic material, a possible deformation of the housing 10 does not modify the adjustment of the bimetallic strip 88. It is clear that the use of the screen plate 32 as support for the bimetallic strip 88 can be used independently of the shunt function of magnetic and thermal trip devices, this function being either omitted or carried out by different means.
  • the screen plate can be made of a ferromagnetic material.
  • the movable contacts 50, 52 are advantageously made of a tellurium copper alloy and cooperate with fixed contacts 46, 48 made of copper. Tests have confirmed the effectiveness of this solution which saves the usual platelets in silver.

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  • Breakers (AREA)

Abstract

1. Miniature circuit breaker with high rupture capacity with a narrow insulating housing (10) comprising : - two extinguishing chambers (34, 36) arranged side by side in the lower part of the housing with deionization plates (38) extending parallely to the bottom (16) of the housing (10), the two arcing chambers being separated by an insulating wall (30) extending in the median line of the housing perpendicularly to said bottom (16), - two pairs of contacts (46, 50; 48, 52) each associated to one of said chambers and located in front of said plates (38), the moving contact (50, 52) moving in a way to draw an initial arc extending parallely to the plates (38) and pivoting by migration on the horns (56, 58) in order to spread out at the entrance perpendicularly to the plates (38), - an input terminal (26) and an output terminal (28) of the circuit breaker arranged on the two narrow lateral faces of the housing, one of the terminals (26) being connected to one (48) of the stationary contacts, - a mechanism (66) to control the opening and the closing of the circuit breaker, - and a magnetic and thermal tripping device, the magnetic tripping device provided with a coil (68) inserted between the arcing chambers (34, 36) and the mechanism (66) and extending parallely to said plates (38), characterized in that it comprises a contact carrier in the form of a fork (54) bridging said wall (30) and carrying at the end of each prong a movable contact (50, 52) to connect electrically these movable contacts (50, 52) and to constitute a contact bridge with two series breaking intervals, said fork (54) being controlled by the mechanism to move simultaneously the movable contacts (50, 52) in open and in closed position, that the two arcing chambers (34, 36), the coil (68) and the mechanism (66) are superposed and fill each the whole width of the housing and that the other terminal (28) is connected to the other stationary contact (46) by means of the said thermal tripping device and the said coil (68).

Description

L'invention est relative à un disjoncteur miniature à haut pouvoir de coupure ayant un boîtier moulé étroit comprenant:

  • - deux chambres de coupure disposées côte à côte dans la partie inférieure du boîtier et ayant des tôles de désionisation s'étendant parallèlement au fond du boîtier, les deux chambres étant séparées par une cloison isolante s'étendant dans le plan médian du boîtier perpendiculaire audit fond,
  • - deux paires de contacts, chacune associée à l'une desdites chambres en étant disposée devant lesdites tôles, le contact mobile se débattant de manière à tirer un arc initial s'étendant parallèlement aux tôles et pivotant par migration sur des cornes pour s'étaler à l'entrée perpendiculairement aux tôles,
  • - un support de contacts en forme de fourche chevauchant ladite cloison et portant à l'extrémité de chacune de ses dents un contact mobile, de façon à déplacer simultanément lesdits contacts mobiles en position d'ouverture et en position de fermeture,
  • - une borne d'entrée et une borne de sortie du disjoncteur disposées sur les deux faces latérales étroites opposées du boîtier, l'une des bornes étant reliée à l'un des contacts fixes, l'autre contact fixe étant relié avec interposition d'un dispositif de déclenchement magnéto-thermique à l'autre borne, ledit support en fourche étant agencé pour relier électriquement lesdits contacts mobiles pour constituer un pont de contact à deux intervalles de coupure connectés en série,
  • - un mécanisme de commande manuelle et/ou automatique dudit support en fourche pour ouvrir et fermer ledit disjoncteur.
The invention relates to a miniature circuit breaker with high breaking capacity having a narrow molded case comprising:
  • - two breaking chambers arranged side by side in the lower part of the housing and having deionization plates extending parallel to the bottom of the housing, the two chambers being separated by an insulating partition extending in the median plane of the housing perpendicular to said housing background,
  • - two pairs of contacts, each associated with one of said chambers being disposed in front of said sheets, the movable contact struggling so as to draw an initial arc extending parallel to the sheets and pivoting by migration on horns to spread out at the entrance perpendicular to the sheets,
  • a fork-shaped contact support overlapping said partition and carrying a movable contact at the end of each of its teeth, so as to simultaneously move said movable contacts in the open position and in the closed position,
  • - an input terminal and an output terminal of the circuit breaker arranged on the two opposite narrow side faces of the housing, one of the terminals being connected to one of the fixed contacts, the other fixed contact being connected with the interposition of a magneto-thermal tripping device at the other terminal, said fork support being arranged to electrically connect said movable contacts to form a contact bridge with two cutoff intervals connected in series,
  • - A mechanism for manual and / or automatic control of said fork support to open and close said circuit breaker.

Les disjoncteurs miniatures sont fréquemment utilisés pour la protection des circuits électriques de distribution terminale, et l'augmentation des puissances installées a fait surgir le besoin de disposer de disjoncteurs à pouvoir de coupure élevé. Une augmentation du pouvoir de coupure peut être obtenue par branchement en série de deux disjoncteurs unipolaires, mais l'encombrement et le coût est ainsi doublé. On a déjà proposé de loger à l'intérieur d'un même boîtier un système de contact assurant une double coupure et permettant une augmentation du pouvoir de coupure (brevet français N° 2.154.628). Les disjoncteurs miniatures appartiennent à des systèmes modulaires d'appareils électriques ayant tous le même profil pour être disposé côte à côte sur un support d'une manière bien connue des spécialistes. La structure et la disposition des éléments constitutifs du disjoncteur miniature connu précité ne permettent pas le respect des dimensions normalisées des modules, et la présente invention a pour but de permettre la réalisation d'un disjoncteur miniature à encombrement réduit et à pouvoir de coupure élevé.Miniature circuit breakers are frequently used for the protection of terminal electrical distribution circuits, and the increase in installed power has created the need for circuit breakers with high breaking capacity. An increase in breaking capacity can be obtained by connecting two circuit breakers in series unipolar, but the size and cost is thus doubled. It has already been proposed to house inside a same housing a contact system ensuring a double break and allowing an increase in the breaking capacity (French patent No. 2,154,628). Miniature circuit breakers belong to modular systems of electrical devices all having the same profile to be placed side by side on a support in a manner well known to specialists. The structure and arrangement of the components of the aforementioned known miniature circuit breaker do not allow compliance with the standardized dimensions of the modules, and the present invention aims to allow the realization of a miniature circuit breaker with reduced overall dimensions and high breaking capacity.

Le disjoncteur selon l'invention est caractérisé par le fait que lesdites deux cambres de coupure avec les contacts associés occupent la quasi-totalité de la largeur et de la longueur de ladite partie inférieure du boîtier, la partie su- - périeure recevant le mécanisme et la bobine du déclencheur magnétique communs aux deux intervalles de coupure et occupant chacun toute la largeur du boîtier, la bobine étant intercalée entre les chambres de coupure et le mécanisme en s'étendant parallèlement auxdites tôles, et que ladite fourche de support de contacts reliant les contacts mobiles au mécanisme s'étend à l'avant et suivant une direction sensiblement perpendiculaire de ladite bobine.The circuit breaker according to the invention is characterized in that said two cut-off camber with associated contacts occupy substantially the entire width and length of said lower housing part, the su- part - périeure receiving mechanism and the coil of the magnetic trip device common to the two cut-off intervals and each occupying the entire width of the housing, the coil being interposed between the cut-off chambers and the mechanism extending parallel to said sheets, and that said contact support fork connecting the movable contacts to the mechanism extends at the front and in a substantially perpendicular direction of said coil.

Le disjoncteur miniature selon l'invention conserve la structure générale du disjoncteur commercialement dénommé C 32 et décrit dans le brevet français N° 2.344.949, seule la largeur du boîtier étant augmentée et portée à 25 mm, de façon à disposer d'un espace suffisant au logement côte-à-côte des deux chambres de coupure et de la bobine du déclencheur magnétique de section accrue. Les auxiliaires, notamment le bloc de protection différentielle, la commande d'ouverture à distance du disjoncteur C 32 ou/et ses contacts auxiliaires peuvent ainsi être associés sans aucune modification au disjoncteur selon l'invention, pour réaliser la protection différentielle et/ou la commande d'ouverture à distance et la siqnalisation.The miniature circuit breaker according to the invention retains the general structure of the circuit breaker commercially known as C 32 and described in French patent No. 2,344,949, only the width of the housing being increased and increased to 25 mm, so as to have space sufficient for the side-by-side accommodation of the two breaking chambers and the magnetic release coil of increased section. The auxiliaries, in particular the differential protection unit, the remote opening control of the C 32 circuit breaker and / or its auxiliary contacts can thus be associated without any modification to the circuit breaker according to the invention, to carry out the differential protection and / or remote opening control and signaling.

Les deux chambres de coupure sont séparées par une cloison isolante évitant tout amorçage intempestif et dans la cloison isolante est insérée une plaque métallique formant écran se prolongeant pour constituer une patte de fixation de la bilame. La double fonction de la plaque métallique, en l'occurrence d'écran et de support de la bilame, permet d'affranchir cette dernière de toute déformation du boîtier soumis à des échauffements et des contraintes et d'éviter tout déréglage du seuil de déclenchement.The two breaking chambers are separated by an insulating partition avoiding any untimely initiation and in the insulating partition is inserted a metal plate forming a screen extending to form a fixing lug for the bimetallic strip. The dual function of the metal plate, in this case screen and support of the bimetal strip, makes it possible to free the latter of any deformation of the housing subjected to overheating and stresses and to avoid any adjustment of the triggering threshold .

Selon un autre développement de l'invention, la plaque métallique de séparation des chambres de coupure est agencée pour constituer un conducteur de shuntage du déclencheur magnétique et du déclencheur thermique dès la formation de l'arc tiré entre les contacts séparés. A cet effet, la plaque métallique se prolonge du côté des contacts et est - conformée en corne d'arc sur laquelle l'arc commute dès sa formation d'une manière bien connue en soi.According to another development of the invention, the metal plate for separating the breaking chambers is arranged to constitute a shunt conductor for the magnetic trip device and the thermal trip device as soon as the arc drawn between the separated contacts is formed. To this end, the metal plate is extended on the side of the contacts and is - shaped as an arc horn on which the arc switches as soon as it forms in a manner well known per se.

En vue d'accroître la force du déclencheur magnétique, nui agit par l'intermédiaire d'un percuteur directement sur la fourche de contact pour accélérer le déplacement de cette dernière en direction d'ouverture, il est connu d'entourer la bobine du déclencheur par une carcasse de fermeture du flux magnétique. La carcasse métallique ne s'étend pas obligatoirement sur toutes les faces de la bobine, et selon un développement de l'invention, la face adjacente aux chambres de coupure est ouverte, de façon à réduire l'encombrement en hauteur. La face opposée est avantageusement également ouverte pour la même raison.In order to increase the force of the magnetic trip unit, it acts by means of a striker directly on the contact fork to accelerate the movement of the latter in the opening direction, it is known to surround the coil of the trip device by a magnetic flux closing carcass. The metal carcass does not necessarily extend over all the faces of the coil, and according to a development of the invention, the face adjacent to the breaking chambers is open, so as to reduce the overall height. The opposite face is advantageously also open for the same reason.

D'autres avantages et caractéristiques de l'invention ressortiront plus clairement de la description qui va suivre d'un mode de mise en oeuvre de l'invention, donné à titre d'exemple non limitatif et représenté aux dessins annexés, dans lesquels :

  • la figure 1 est une vue schématique en élévation d'un disjoncteur selon l'invention, la face latérale du boîtier étant supposée enlevée;
  • la figure 2 est une coupe, à échelle agrandie, suivant la ligne II-II de la fig. 1;
  • la figure 3 est une vue partielle, à échelle agrandie, en coupe suivant le plan médian du disjoncteur selon la fig. 1;
  • la figure 4 est une vue en coupe, à échelle agrandie, suivant la ligne IV-IV de la fig. 1;
  • la figure 5 représente le schéma électrique du disjoncteur.
Other advantages and characteristics of the invention will emerge more clearly from the description which follows of an embodiment of the invention, given by way of nonlimiting example and shown in the appended drawings, in which:
  • Figure 1 is a schematic elevational view of a circuit breaker according to the invention, the side face of the housing being assumed removed;
  • Figure 2 is a section, on an enlarged scale, along the line II-II of FIG. 1;
  • Figure 3 is a partial view, on an enlarged scale, in section along the median plane of the circuit breaker according to FIG. 1;
  • Figure 4 is a sectional view, on an enlarged scale, along the line IV-IV of FIG. 1;
  • Figure 5 shows the circuit diagram of the circuit breaker.

Sur les figures, un boîtier 10, en matériau isolant moulé, est constitué de deux demi-coquilles 12, 14, assemblées par des rivets. Le boîtier 10 présente une forme générale parallélépipédique de faible largeur, notamment de 25 mm.In the figures, a housing 10, made of molded insulating material, consists of two half-shells 12, 14, assembled by rivets. The housing 10 has a generally parallelepiped shape of small width, in particular of 25 mm.

Le boitier 10 présente un fond 16 de fixation sur un rail DIN symétrique et une face frontale 18 pré- sentant une lumière de passage d'une manette de commande manuelle 20. Sur les faces latérales étroites 22, 24 du boîtier 10 sont disposées des bornes 26, 28 d'entrée et de sortie du disjoncteur, logé à l'intérieur du boîtier (fig. 5).The housing 10 has a base 16 for fixing on a mounting rail and a front face 18, pre - sensing a portion of light of a manual control switch 20. On the narrow side faces 22, 24 of the housing 10 are disposed the terminals 26, 28 input and output of the circuit breaker, housed inside the housing (fig. 5).

La partie inférieure du boîtier 10 adjacente au fond 16 est subdivisée en deux parties par une cloison isolante 30 s'étendant dans le plan médian du boîtier 10. En se référant plus particulièrement aux figures 2 et 4, on voit qu'une plaque métallique 32 est insérée à l'intérieur de la cloison isolante 30 en deux parties accolées. De part et d'autre de la cloison isolante 30 sont disposées symétriquement des chambres de coupure 34, 36, constituées par un empilage de tôles de désionisation 38 s'étendant parallèlement au fond 16. La cloison isolante 30 se prolonge de part et d'autre des chambres de coupure 34, 3.6 pour séparer d'une part deux chambres de formation d'arc 40, 42, situées devant les chambres de coupure 34, 36 et d'autre part desconduits 44 d'échappement de gaz de coupure. De part et d'autre de la cloison médiane isolante 30 sont disposés respectivement dans les chambres de formation 40, 42 des contacts fixes 46, 48, susceptibles de coopérer avec des contacts mobiles 50, 52, portés par un support commun en forme de fourche 54. La fourche porte-contacts mobiles 54 chevauche la cloison isolante 30 et est commandée par un mécanisme de commande décrit ci-dessous, de manière à se débattre suivant une direction sensiblement parallèle aux tôles 38. Des électrodes 56, 58 prolongent les contacts fixes 46, 48 pour se raccorder aux tôles d'extrémité des chambres de coupure 34, 36. L'électrode 58 est raccordée directement au contact fixe 48 sans solution de continuité tandis que l'électrode 56 est séparée du contact fixe 46 par un intervalle isolant 60. L'électrode 56 est reliée électriquement à la plaque 32 par l'intermédiaire d'une patte repliée 62 de cette dernière.The lower part of the housing 10 adjacent to the bottom 16 is subdivided into two parts by an insulating partition 30 extending in the median plane of the housing 10. With particular reference to FIGS. 2 and 4, it can be seen that a metal plate 32 is inserted inside the insulating partition 30 in two adjoining parts. On either side of the insulating partition 30 are symmetrically arranged breaking chambers 34, 36, constituted by a stack of deionization sheets 38 extending parallel to the bottom 16. The insulating partition 30 extends from both sides other of the breaking chambers 3 4 , 3.6 to separate on the one hand two arc forming chambers 40, 42, located in front of the interrupting chambers 34, 36 and on the other hand of the interrupting gas exhaust conduits 44. On either side of the insulating central partition 30 are disposed respectively in the formation chambers 40, 42 of the fixed contacts 46, 48, capable of cooperating with movable contacts 50, 52, carried by a common support in the form of a fork 54. The movable contact-carrying fork 54 straddles the insulating partition 30 and is controlled by a control mechanism described below, so as to struggle in a direction substantially parallel to the sheets 38. Electrodes 56, 58 extend the fixed contacts 46, 48 for connection to the end plates of the interrupting chambers 34, 36. The electrode 58 is connected directly to the fixed contact 48 without any continuity solution while the electrode 56 is separated from the fixed contact 46 by an insulating gap 60. The electrode 56 is electrically connected to the plate 32 by means of a folded tab 62 of the latter.

Dans la partie supérieure du boîtier 10, au-dessus de la cloison isolante médiane 30, sont disposés le déclencheur magnétique 64 et le mécanisme de commande 66. Le déclencheur magnétique 64 comporte une bobine 68 d'axe parallèle aux tôles 38, la bobine 68 étant entourée d'une carcasse métallique 70 ayant deux grandes faces latérales 72, 74, accolées aux coquilles 12, 14 et fixées à ces dernières par des tenons 76 emboîtés dans des lumières 78. La carcasse 70 ne s'étend pas sur les faces inférieures et supérieures de la bobine 68, respectivement en regard des chambres 34, 36 et du mécanisme 66, de manière à réduire l'encombrement en hauteur du déclencheur magnétique 64. Un noyau plongeur 80, monté à coulissement axial dans la bobine 68, porte un extracteur 82 agissant sur la fourche porte-contacts 54 et actionne un poussoir 84 agissant sur une barre de déclenchement 86 du mécanisme 66. La barre de declenchement 86 peut également être actionnée par un déclencheur thermique, constitué par une bilame 88.In the upper part of the housing 10, above the central insulating partition 30, are arranged the magnetic trigger 64 and the control mechanism 66. The magnetic trigger 64 comprises a coil 68 with an axis parallel to the sheets 38, the coil 68 being surrounded by a metal carcass 70 having two large lateral faces 72, 74, attached to the shells 12, 14 and fixed to the latter by tenons 76 fitted into slots 78. The carcass 70 does not extend on the lower faces and higher of the coil 68, respectively opposite the chambers 34, 36 and of the mechanism 66, so as to reduce the overall dimensions in height of the magnetic trip device 64. A plunger core 80, mounted to slide axially in the coil 68, carries a extractor 82 acting on the contact-carrying fork 54 and actuating a pusher 84 acting on a trigger bar 86 of the mechanism 66. The trigger bar 86 can also be actuated by a thermal trigger, constituted by a bimetallic strip 88.

Le mécanisme de commande 66 est du type décrit dans le brevet français précité N° 2.344.949, auquel on se reportera avantageusement pour de plus amples détails. Seules les dimensions des pièces constitutives du mécanisme 66 ont été augmentées pour résister à l'effort de manoeuvre accru par la présence d'une double coupure. La fourche porte-contacts 54 est articulée sur un berceau 90 monté à rotation sur un axe fixe 92 et commandé par une biellette 94 articulée par son extrémité opposée à la manette 20. Un crochet 96, monté à rotation sur un axe fixe 98, coopère par l'une de ses extrémités avec la barre de déclenchement 86 et par son extrémité opposée. avec la fourche porte-contacts 54 pour constituer un accrochage. Le mécanisme 66 comporte bien entendu des ressorts de rappel et de pression de contact (non représentés), l'ensemble étant agencé de telle manière qu'un pivotement de la manette 20 provoque un basculement du berceau 90 et un déplacement en position d'ouverture ou de fermeture des contacts 46, 50; 48, 52, de la fourche porte-contacts 54. Un actionnement de la barre de déclenchement 86 par le dé- .clencheur magnétique 64 ou la bilame 88 libère le crochet 96 et déverrouille la fourche porte-contacts 54, qui se déplace en direction d'ouverture sous l'action d'un ressort de rappel (non représenté). Le mécanisme de commande et son fonctionnement sont bien connus des spécialistes.The control mechanism 66 is of the type described in the aforementioned French patent No. 2,344,949, which will advantageously be referred to for further details. Only the dimensions of the constituent parts of the mechanism 66 have been increased to resist the increased operating force by the presence of a double cut. The contact-carrying fork 54 is articulated on a cradle 90 mounted for rotation on a fixed axis 92 and controlled by a connecting rod 94 articulated by its end opposite to the lever 20. A hook 96, mounted for rotation on a fixed axis 98, cooperates by one of its ends with the trigger bar 86 and by its opposite end. with the contact-carrying fork 54 to constitute a hooking. The mechanism 66 naturally includes return and contact pressure springs (not shown), the assembly being arranged in such a way that a pivoting of the lever 20 causes the cradle 90 to tilt and move to the open position. or closing contacts 46, 50; 48, 52, of the contact-carrying fork 54. An actuation of the trigger bar 86 by the magnetic trip device 64 or the bimetallic strip 88 releases the hook 96 and unlocks the contact-carrying fork 54, which moves in the direction opening under the action of a return spring (not shown). The control mechanism and its operation are well known to specialists.

La bilame 88 est fixée par l'intermédiaire d'un support 100 à une patte 102, constituée par un prolongement de la plaque 32 insérée dans la cloison isolante médiane 30. La pièceinter- nédiaire 100 de forme allongée est fixée par l'une de ses extrémités, par exemple par sertissage, sur la patte 102, tandis que l'extrémité opposée coopère avec une vis de réglage 104 vissée dans un orifice ménagé dans une extension 106 de la patte 102. Il est facile de comprendre que le vissage ou le dévissage de la vis de réglage 104 provoque une déformation de la pièce intermédiaire 100, et de ce fait un déplacement de l'extrémité libre de la bilame 88 en rapprochement ou à écartement du levier de déclenchement 86 d'une manière bien connue des spécialistes. Il convient de noter que la fixation de la bilame 88 et de son dispositif de réglage 104 est indépendante du boîtier 10, l'ensemble étant porté par la plaque métallique 32.The bimetallic strip 88 is fixed by means of a support 100 to a lug 102, constituted by an extension of the plate 32 inserted in the central insulating partition 30. The intermediate piece 100 of elongated shape is fixed by one of its ends, for example by crimping, on the tab 102, while the opposite end cooperates with an adjusting screw 104 screwed into an orifice formed in an extension 106 of the tab 102. It is easy to understand that the screwing or the unscrewing the adjusting screw 104 causes a deformation of the intermediate piece 100, and therefore a displacement of the free end of the bimetallic strip 88 in approach or spacing of the trigger lever 86 in a manner well known to specialists. It should be noted that the fixing the bimetallic strip 88 and its adjustment device 104 is independent of the housing 10, the assembly being carried by the metal plate 32.

En se référant plus particulièrement à la figure 5, on voit que la borne 26 est raccordé au contact fixe 48, la fourche 54 constituant un pont de contact coopérant respectivement avec les contacts fixes 48, 46. Le contact fixe 46 est relié à l'entrée de la bobine 68, la sortie de cette dernière étant reliée par une tresse 108 à l'extrémité libre de la bilame 88. La plaque 32 est connectée à la borne 28.Referring more particularly to FIG. 5, it can be seen that the terminal 26 is connected to the fixed contact 48, the fork 54 constituting a contact bridge cooperating respectively with the fixed contacts 48, 46. The fixed contact 46 is connected to the input of the coil 68, the output of the latter being connected by a braid 108 to the free end of the bimetallic strip 88. The plate 32 is connected to the terminal 28.

Le disjoncteur selon l'invention fonctionne de la manière suivante :

  • En position de fermeture, représentée aux figures 1 et 5, le courant entre à un instant donné par la borne 26 en traversant le contact 48, le contact mobile 52, la fourche 54, le contact mobile 50, le contact 46, la bobine 68, la bilame 88 pour sortir Dar la borne opposée 28. Lors d'une ouverture du disjoncteur, commandée soit manuellement par basculement de la manette 20, soit automatiquement par le déclencheur magnétique 64 ou la bilame 88, agissant sur la barre de déclenchement 86, la fourche porte-contacts 54 pivote en position d'ouverture en tirant deux arcs, respectivement entre les contacts 46, 50 et 48, 52. Les arcs migrent sur les électrodes 56, 58, pour pénétrer dans les chambres de coupure 34, 36 où ils sont éteints de la manière usuelle. Dès la commutation de l'arc tiré entre les contacts 46, 50 sur l'électrode 56, la bobine 68 et la bilame 88 sont shuntées, le courant passant de la borne 26, l'électrode 58, le premier arc, le contact mobile 52, la fourche 54, le contact mobile 50. le deuxième arc. l'électrode 56, la patte 62. la plaque 32 vers la borne de sortie 28. Les deux arcs sont connectés en série et confèrent au disjocteur un pouvoir de coupure élevé. Le déplacement rapide de la fourche porte-contacts 54 par un déclencheur électro-magnétique 64 de grande puissance participe à l'accroissement du pouvoir de coupure. Il convient de noter que le déclencheur magnétique 64 et le mécanisme de commande 66, qui sont communs aux deux intervalles de coupure, disposent de l'ensemble de la largeur du boîtier 10, ce qui facilite leur conception. Le plan médian, contenant la cloison isolante 30, constitue un plan de symétrie du disjoncteur.
The circuit breaker according to the invention operates as follows:
  • In the closed position, represented in FIGS. 1 and 5, the current enters at a given time by terminal 26 through the contact 48, the movable contact 52, the fork 54, the movable contact 50, the contact 46, the coil 68 , the bimetallic strip 88 to exit D ar the opposite terminal 28. When the circuit breaker is opened, controlled either manually by tilting the lever 20, or automatically by the magnetic trip device 64 or the bimetallic strip 88, acting on the trip bar 86 , the contact-carrying fork 54 pivots in the open position by pulling two arcs, respectively between the contacts 46, 50 and 48, 52. The arcs migrate on the electrodes 56, 58, to penetrate the breaking chambers 34, 36 where they are turned off in the usual way. As soon as the arc drawn between the contacts 46, 50 on the electrode 56 is switched, the coil 68 and the bimetallic strip 88 are shunted, the current passing from terminal 26, the electrode 58, the first arc, the movable contact 52, the fork 54, the movable contact 50. the second arc. the electrode 56, the tab 62. the plate 32 towards the output terminal 28. The two arcs are connected in series and give the circuit breaker a high breaking capacity. The rapid displacement of the contact-carrying fork 54 by a high-power electromagnetic trip device 64 contributes to the increase in breaking capacity. It should be noted that the magnetic trip device 64 and the control mechanism 66, which are common to the two cut-off intervals, have the entire width of the housing 10, which facilitates their design. The median plane, containing the insulating partition 30, constitutes a plane of symmetry of the circuit breaker.

Le boîtier 10 peut être réalisé en matière thermoplastique, une déformation éventuelle du boîtier 10 ne modifiant pas le réglage de la bilame 88. Il est clair que l'utilisation de la plaque écran 32 comme support de la bilame 88 peut être utilisée indépendamment de la fonction de shuntage des déclencheurs magnétiques et thermiques, cette fonction étant soit omise soit réalisée par des moyens différents. La plaque écran peut être en un matériau ferromagnétique. Les contacts mobiles 50, 52 sont avantageusement réalisés en un alliage cuivre tellure et coopèrent avec des contacts fixes 46, 48 en cuivre. Des essais ont confirmé l'efficacité de cette solution qui permet une économie des plaquettes -usuelles en argent.The housing 10 can be made of thermoplastic material, a possible deformation of the housing 10 does not modify the adjustment of the bimetallic strip 88. It is clear that the use of the screen plate 32 as support for the bimetallic strip 88 can be used independently of the shunt function of magnetic and thermal trip devices, this function being either omitted or carried out by different means. The screen plate can be made of a ferromagnetic material. The movable contacts 50, 52 are advantageously made of a tellurium copper alloy and cooperate with fixed contacts 46, 48 made of copper. Tests have confirmed the effectiveness of this solution which saves the usual platelets in silver.

L'invention n'est bien entendu nullement limitée au mode de mise en oeuvre plus particulièrement décrit et représenté aux dessins annexés, mais elle s'.étend bien au contraire à toute variante restant dans le cadre des équivalences.The invention is of course in no way limited to the mode of implementation more particularly described and shown in the accompanying drawings, but it extends quite the contrary to any variant remaining within the framework of equivalences.

Claims (10)

1. Disjoncteur miniature à haut pouvoir de coupure ayant un boîtier moulé (10) étroit comprenant : - deux chambres de coupure (34, 36) disposées côte-à-côte dans la partie inférieure du boîtier et ayant des tôles de désionisation (38) s'étendant parallèlement au fond (16) du boîtier, les deux chambres étant séparées par une cloison isolante (30) s'étendant dans le plan médian du boîtier perpendiculaire audit fond (16), - deux paires de contacts (46, 50; 48, 52), chacune associée à l'une desdites chambres en étant disposée devant lesdites tôles (38), le contact mobile (50, 52) se débattant de manière à tirer un arc initial s'étendant parallèlement aux tôles (38) et pivotant par migration sur des cornes (56, 58) pour s'étaler à l'entrée perpendiculairement aux tôles, - un support (54) de contacts en forme de fourche chevauchant ladite cloison (30) et portant à l'extrémité de chacune de ses dents un contact mobile (50, 52), de façon à déplacer simultanément lesdits contacts mobiles (50, 52) en position d'ouverture et en position de fermeture, - une borne (26) d'entrée et une borne (28) de sortie du disjoncteur disposées sur les deux faces (22, 24) latérales étroites opposées du boîtier; l'une des bornes (26) étant reliée à l'un (48) dés contacts fixes, l'autre contact fixe (46) étant relié avec interposition d'un dispositif de déclenchement magnéto-thermique (64, 88) à l'autre borne (28), ledit support en fourche (54) étant agencé pour relier électriquement lesdits contacts mobiles (50, 52) pour constituer un pont de contact à deux intervalles de coupure connectés en série, - un mécanisme (66) de commande manuelle et/ou automatique dudit support en fourche (54) pour ouvrir et fermer ledit disjoncteur,
earactérisé par le fait que lesdites deux chambres de coupure (34, 36) avec les contacts associés (46, 50; 48, 52) occupent la quasi-totalité de la largeur et de la longueur de ladite partie inférieure du boîtier (10), la partie supérieure recevant le mécanisme (66) et la bobine (68) du déclencheur magnétique (64) communs aux deux intervalles de coupure et occupant chacun toute la largeur du boîtier (10), la bobine (68) étant intercalée entre les chambres de coupure (34, 36) et le mécanisme (66) en s'étendant parallèlement auxdites tôles (38), et que ladite fourche (54) de support de contacts reliant les contacts mobiles (50, 52) au mécanisme (66) s'étend à l'avant et suivant une direction sensiblement perpendiculaire de ladite bobine (68). 1. Miniature circuit breaker with high breaking capacity having a narrow molded case (10) comprising: - two breaking chambers (34, 36) arranged side by side in the lower part of the housing and having deionization plates (38) extending parallel to the bottom (16) of the housing, the two chambers being separated by a insulating partition (30) extending in the median plane of the housing perpendicular to said bottom (16), - two pairs of contacts (46, 50; 48, 52), each associated with one of said chambers being arranged in front of said sheets (38), the movable contact (50, 52) struggling so as to draw an initial arc extending parallel to the sheets (38) and pivoting by migration on horns (56, 58) to spread at the entry perpendicular to the sheets, - a support (54) of fork-shaped contacts overlapping said partition (30) and carrying at the end of each of its teeth a movable contact (50, 52), so as to simultaneously move said movable contacts (50, 52 ) in the open position and in the closed position, - an input terminal (26) and an output terminal (28) of the circuit breaker arranged on the two opposite narrow side faces (22, 24) of the housing; one of the terminals (26) being connected to one (48) of fixed contacts, the other fixed contact (46) being connected with the interposition of a magneto-thermal tripping device (64, 88) at the another terminal (28), said fork support (54) being arranged to electrically connect said movable contacts (50, 52) to constitute a contact bridge with two cutoff intervals connected in series, a mechanism (66) for manual and / or automatic control of said fork support (54) for opening and closing said circuit breaker,
earactérisé by the fact that said two breaking chambers (34, 36) with the associated contacts (46, 50; 48, 52) occupy almost the entire width and length of said lower part of the housing (10), the upper part upper receiving the mechanism (66) and the coil (68) of the magnetic trip unit (64) common to the two cut-off intervals and each occupying the entire width of the housing (10), the coil (68) being interposed between the cut-off chambers ( 34, 36) and the mechanism (66) extending parallel to said sheets (38), and that said contact support fork (54) connecting the movable contacts (50, 52) to the mechanism (66) extends to the front and in a substantially perpendicular direction of said coil (68). 2. Disjoncteur selon la revendication 1, caractérisé en ce que ledit mécanisme (66), ladite bobine (68) et lesdits contacts (46, 50; 48, 52) présentent un plan de symétrie constitué par ledit plan médian (30) du boîtier (10).2. Circuit breaker according to claim 1, characterized in that said mechanism (66), said coil (68) and said contacts (46, 50; 48, 52) have a plane of symmetry constituted by said median plane (30) of the housing (10). 3. Disjoncteur selon la revendication 1 ou 2, caractérisé en ce que ladite cloison isolante (30) comporte une plaque métallique (32) formant écran entre les deux chambres de coupure (34, 36), ladite plaque métallique portant une patte de fixation (102) d'une bilame (88) dudit déclencheur thermique.3. Circuit breaker according to claim 1 or 2, characterized in that said insulating partition (30) comprises a metal plate (32) forming a screen between the two breaking chambers (34, 36), said metal plate carrying a fixing lug ( 102) of a bimetallic strip (88) of said thermal trip device. 4. Disjoncteur selon la revendication 3, caractérisé en ce que ladite patte de fixation (102) porte un dispositif (104) de réglage de ladite bilame (88).4. Circuit breaker according to claim 3, characterized in that said fixing lug (102) carries a device (104) for adjusting said bimetallic strip (88). 5. Disjoncteur selon la revendication 3 ou 4, caractérisé en ce que ladite plaque métallique (32) porte une extension (62) formant une électrode d'arc adjacente à un contact fixe (46) et agencée pour capter une racine de l'arc dès la formation de l'arc, ladite plaque (32) constituant un circuit de shuntage du déclencheur (64, 88) dès la commutation de l'arc sur ladite électrode (62).5. Circuit breaker according to claim 3 or 4, characterized in that said metal plate (32) carries an extension (62) forming an arc electrode adjacent to a fixed contact (46) and arranged to pick up a root of the arc as soon as the arc forms, said plate (32) constituting a shunt circuit for the trip device (64, 88) as soon as the arc is switched on said electrode (62). 6. Disjoncteur selon la revendication. 5, caractérisé en ce que ladite électrode (62) est prolongée par une corne de guidage (56) de l'arc solidaire de la tôle (38) d'extrémité de la chambre associée (34).6. Circuit breaker according to claim. 5, characterized in that said electrode (62) is extended by a guide horn (56) of the arc secured to the sheet (38) at the end of the associated chamber (34). 7. Disjoncteur selon l'une quelconque des revendications 3 à 6, caractérisé en ce que ladite plaque métallique (32) est flanquée de deux plaques isolantes (30).7. Circuit breaker according to any one of claims 3 to 6, characterized in that said metal plate (32) is flanked by two insulating plates (30). 8. Disjoncteur selon l'une quelconque des revendications précédentes, ladite bobine (66) étant entourée par une carcasse métallique (70) et coopérant avec une armature (80) munie d'un extracteur (82) pour accélérer l'ouverture des contacts (50, 52), caractérisé en ce que la face de la carcasse (70) adjacente aux chambres de coupure (34, 36) est ouverte.8. A circuit breaker according to any one of the preceding claims, said coil (66) being surrounded by a metal carcass (70) and cooperating with a frame (80) provided with an extractor (82) to accelerate the opening of the contacts ( 50, 52), characterized in that the face of the carcass (70) adjacent to the interrupting chambers (34, 36) is open. 9. Disjoncteur selon la revendication 8, caractérisé en ce que la face opposée de la carcasse (70) opposée à ladite face adjacente aux chambres (34, 36) est également ouverte.9. A circuit breaker according to claim 8, characterized in that the opposite face of the carcass (70) opposite to said face adjacent to the chambers (34, 36) is also open. 10. Disjoncteur selon l'une quelconque des revendications précédentes,caractérisé en ce que lesdits contacts mobiles (50, 52) sont en un alliage cuivre tellure et coopèrent avec des contacts fixes (46, 48) en cuivre.10. Circuit breaker according to any one of the preceding claims, characterized in that said movable contacts (50, 52) are made of a tellurium copper alloy and cooperate with fixed contacts (46, 48) of copper.
EP19810401899 1980-12-09 1981-12-01 Miniature circuit breaker with high rupture capacity Expired EP0053973B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8026166 1980-12-09
FR8026166A FR2495826A1 (en) 1980-12-09 1980-12-09 MINIATURE HIGH BREAKING CIRCUIT BREAKER

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EP0053973A1 true EP0053973A1 (en) 1982-06-16
EP0053973B1 EP0053973B1 (en) 1985-08-21

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DE (1) DE3171946D1 (en)
ES (1) ES8300415A1 (en)
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US3388358A (en) * 1964-04-11 1968-06-11 Bassani Spa Circuit breaker
DE1538677A1 (en) * 1966-07-08 1970-02-19 Licentia Gmbh Mechanism for automatic switch
FR2154628A1 (en) * 1971-09-30 1973-05-11 Maier & Cie C
DE2234423A1 (en) * 1972-07-13 1974-01-24 Bbc Brown Boveri & Cie AUTOMATIC INSTALLATION SWITCH IN SHELL CONSTRUCTION
FR2204872A1 (en) * 1972-10-30 1974-05-24 Legrand Sa
FR2344949A1 (en) * 1976-03-15 1977-10-14 Merlin Gerin Low voltage miniature contact breaker for domestic use - has bimetal strips and solenoid for release and laminated stack for arc blowout

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2517465A1 (en) * 1981-11-27 1983-06-03 Merlin Gerin MINIATURE CIRCUIT BREAKER WITH TWO ADJUSTED SWITCHING CHAMBERS
EP0080924A1 (en) * 1981-11-27 1983-06-08 Merlin Gerin Miniature circuit breaker with two juxtaposed extinguishing chambers
FR2592738A1 (en) * 1986-01-03 1987-07-10 Merlin Gerin MULTIPLE MOBILE CONTACT MINIATURE ELECTRIC CIRCUIT BREAKER
EP0232637A1 (en) * 1986-01-03 1987-08-19 Merlin Gerin Miniature electrical switch with multiple contact
EP0418754A2 (en) * 1989-09-18 1991-03-27 Mitsubishi Denki Kabushiki Kaisha Current limiting apparatus
EP0418754A3 (en) * 1989-09-18 1992-03-25 Mitsubishi Denki Kabushiki Kaisha Current limiting apparatus
FR2674986A1 (en) * 1991-04-08 1992-10-09 Hager Electro IMPROVED MODULAR SINGLE POLE CIRCUIT BREAKER AND MOUNTING METHOD THEREOF.
EP0508846A1 (en) * 1991-04-08 1992-10-14 Hager Electro S.A. Improved single pole modulator circuit breaker and assembly method therefor
EP0619592A1 (en) * 1993-04-07 1994-10-12 Schneider Electric Sa Electric circuit breaker with electrodynamic repulsion of the contacts and double extinguishing chambers
FR2703821A1 (en) * 1993-04-07 1994-10-14 Merlin Gerin Electric circuit breaker with electrodynamic repulsion of contacts and with double breaking chambers.
EP0649155A1 (en) * 1993-10-15 1995-04-19 Hager Electro S.A. Double arc runner for a circuit breaker arc guide chamber
FR2768856A1 (en) * 1997-09-24 1999-03-26 Schneider Electric Sa ELECTROMAGNETIC TRIGGER CIRCUIT BREAKER WITH MOBILE FORK CONTACT PROPELLER
EP0905735A1 (en) * 1997-09-24 1999-03-31 Schneider Electric Sa Circuit breaker with electromagnetic trip device with actation for a mobile forked contact
EP1178509A2 (en) * 2000-07-21 2002-02-06 GEWISS S.p.A. Magnetothermal electrical circuit breaker
EP1178509A3 (en) * 2000-07-21 2002-02-27 GEWISS S.p.A. Magnetothermal electrical circuit breaker
EP2618354A1 (en) * 2012-01-23 2013-07-24 General Electric Company Arc chute assembly and method of manufacturing same
US8912461B2 (en) 2012-01-23 2014-12-16 General Electric Company Arc chute assembly and method of manufacturing same

Also Published As

Publication number Publication date
ES507719A0 (en) 1982-11-01
EP0053973B1 (en) 1985-08-21
FR2495826A1 (en) 1982-06-11
FR2495826B1 (en) 1984-02-03
DE3171946D1 (en) 1985-09-26
ES8300415A1 (en) 1982-11-01

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