EP0619593A1 - Multipole current limiting circuit breaker with electrodynamic repulsion - Google Patents

Multipole current limiting circuit breaker with electrodynamic repulsion Download PDF

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Publication number
EP0619593A1
EP0619593A1 EP94420094A EP94420094A EP0619593A1 EP 0619593 A1 EP0619593 A1 EP 0619593A1 EP 94420094 A EP94420094 A EP 94420094A EP 94420094 A EP94420094 A EP 94420094A EP 0619593 A1 EP0619593 A1 EP 0619593A1
Authority
EP
European Patent Office
Prior art keywords
contact
bar
spring
movable contact
circuit breaker
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
EP94420094A
Other languages
German (de)
French (fr)
Other versions
EP0619593B1 (en
Inventor
Jean-Luc Payet-Burin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric SE
Original Assignee
Merlin Gerin SA
Schneider Electric SE
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 Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0619593A1 publication Critical patent/EP0619593A1/en
Application granted granted Critical
Publication of EP0619593B1 publication Critical patent/EP0619593B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/102—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by special mounting of contact arm, allowing blow-off movement
    • 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
    • H01H1/12—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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/225—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member the supporting member being pivotable
    • 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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • 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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H2001/223—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member using a torsion spring

Definitions

  • the appearance of a short-circuit current causes in a first phase the rapid opening, by electrodynamic repulsion, of the contacts of the faulty pole, and in a second phase the triggering of the piloted mechanism by the triggering means.
  • the rotation of the switching rod for the final opening of the contacts occurs only during the second phase after the release lever is unlocked by the latch.
  • the bar remains stationary during the first phase of electrodynamic repulsion.
  • the movable contact is subjected to a variation of the return torque of the contact pressure spring, said torque being increasing to an intermediate position of the opening stroke, then decreasing until 'in the open position.
  • Document FR-A 2553 930 of the applicant belongs to a second type of limiting circuit breaker having a reversible mechanism, in which the axis of rotation of the bar coincides with the point of articulation of each contact arm.
  • the tension spring is anchored between the movable contact and the bar.
  • each pole cooperates with the toggle device to rotate the switching rod in the opening direction after the actuation of the electrodynamic repulsion means of the faulty pole so as to allow contact separation of all the poles before the release of the release lever by the latch.
  • the reversibility of the mechanism by rotation of the bar during the first phase of electrodynamic opening accelerates the tripping time to confirm the definitive opening of the circuit breaker.
  • the rotation of the bar before the intervention of the trigger is made possible thanks to the deformation of the toggle joint whose angle of offset of the rods is comprised in the closed position between 10 and 20 degrees.
  • the invention relates to the first type of limiting circuit breaker, and aims to improve the anti-fallout system of the movable contact at the end of the repulsion stroke.
  • the circuit breaker according to the invention is characterized in that: the movable contact is shaped like a fork having a common core for supporting two contact arms, and a holding tail articulated on the axis and that the spiral spring 90 is mounted floating in the recess of the bar and comprises a feeler member cooperating with two balancing slots of the support surface integral with the core to distribute the contact pressure on the two contact arms.
  • the spiral spring comprises two helical windings of metal wire, arranged coaxially in the recess by being interconnected in the central zone by a projecting elastic connection constituting said feeler, and comprising two strands of ends bearing against a wall of the bar.
  • the distribution of the contact pressure with the spiral spring is effected by means of two balancing slots provided on the bearing surface of the core of the movable fork contact. Each slot has hooking surfaces to temporarily block the movable contact in the second active position.
  • a multipolar circuit breaker 10 with molded insulating casing 12 comprises a breaking module 14 per pole, formed by a one-piece bulb 16 made of molded plastic, and having the shape of a rectangular parallelepiped.
  • the bulb 16 comprises a front face 18 having an orifice 20 for passage of the movable contact 22, and the breaking module 14 comprises a device for electrodynamic repulsion of the contacts.
  • the tripping device 42 comprises a magnetothermal trip device 44 equipped opposite the pad 40, with a fourth contact pad 46 forming part of the other terminal 48 for connecting the pole.
  • the trip device 44 is electrically inserted in series in the pole with the contacts 22, 24, 26 of the breaking module 14.
  • the triggering device 42 further comprises a trigger bar 50 mounted with limited rotation between an armed position and a triggered position as a function of the position of the actuating member of the trigger 44, for example the bimetallic strip 52 or the pallet 54
  • the rotary bar 50 is moved to the triggered position as soon as the current flowing in the pole exceeds a predetermined threshold.
  • the trigger bar 50 also cooperates with a latch 56 for hooking a mechanism 58 for controlling the toggle joint 60 and the lever 62.
  • the mechanism 58 is common to all of the poles, and is housed inside the housing 12, only the handle 62 being accessible from the outside by passing through a lumen 64 formed in the front face of the housing 12, for controlling manual circuit breaker 10.
  • the lower link 66 of the toggle joint 60 is coupled to a protuberance 68 of a switching bar 70 serving to support the movable contacts 22 of all the poles.
  • the switching bar 70 is made of insulating material and extends parallel to the trigger bar 50 in the transverse direction of the poles.
  • the lock 56 unlocking order can come from the thermomagnetic trip device 44, or from an auxiliary trip device, in particular with MN voltage shortage, with MX current emission, differential, etc.
  • Each cut-off module 14 contains two arc extinguishing chambers, of which only one 74 is shown in FIG. 1, each chamber being in communication with an opening or channel 76 for exhaust of the cutting gases to the outside of the bulb 16.
  • Each arc extinguishing chamber 74 is formed by a stack of deionization sheets with V-notches oriented towards the movable contact 22.
  • the switching bar 70 of a three-pole circuit breaker is equipped with three identical movable contacts 22, distributed at regular intervals along the transverse direction of the bar 70.
  • Each movable contact 22 has the form of a fork two contact arms 22a, 22b, parallel, cooperating in the closed position with the two fixed contacts 24, 26.
  • each cut-off module 14 The interior of the bulb 16 of each cut-off module 14 is subdivided by an intermediate insulating wall into two adjacent compartments, into which the two arms 22a, 22b of the movable contact 22 in forks penetrate through the orifice 2o, the contact mobile 22 being positioned astride the wall during its pivoting between the closed and open positions.
  • the bar 70 is guided in rotation by bearings (not shown) provided in the bulb 16 of the different cut-off modules 14.
  • each movable contact 22 in a fork has a common base 80 for supporting the two vertical contact arms 22a, 22b, so as to form an inverted U.
  • the rectilinear base 80 extends in the transverse direction of the bar 70, and is equipped in the central area with a retaining tail 82 whose free end is articulated on a horizontal axis 84 integral with the bar 70.
  • the tail 82 is located in the median plane of symmetry with an opposite orientation relative to the two elementary contact arms 22a, 22b.
  • each movable contact 22 is housed with play in two aligned bearings 86, 88 formed on the upper face of the bar 70.
  • the contact axis 84 is parallel, and eccentric with respect to the axis of rotation of the bar 70.
  • Each movable contact 22 cooperates with a spiral spring 90 located in a recess 92 delimited by a rectangular frame 93 of the bar 70 to ensure the contact pressure in the closed position.
  • the spring 90 comprises two helical windings 90a, 90b coaxial made of metal wire and interconnected by an intermediate elastic connection 94, which is crossed by the tail 82 while bearing on the base 80 of the movable contact 22.
  • the elastic connection 94 of the spring 90 comprises two strands of wire, shaped according to a half-turn playing the role of feeler, and having a projecting portion 94a curved upwards.
  • the probe of the elastic connection 94 is positioned in two slots 96, 98 in V provided on the bearing surface 80a of the base 80 to ensure the balancing of the contact pressure in the closed position of the contacts 22, 24, 26
  • the two slots 96, 98 are symmetrical with respect to the median plane passing through the tail 82, and the two end strands 100, 102 of the two windings 90a, 90b are permanently pressed against the internal upper face of the frame 93.
  • the spring 90 is mounted floating in the recess 92 relative to the axis of the rotary bar 70.
  • the cooperation of the spring 90 with the core 80 of the movable contact 22 in the fork constitutes a device for temporarily maintaining the contact at the end of the electrodynamic repulsion stroke.
  • FIG. 4 shows the pressure force P which is exerted on the movable contact 22 when the latter is in a first rest position.
  • the line of action of the force P is substantially perpendicular to the electrical connection 94 of the spring 90, and urges the movable contact 22 in an anti-clockwise direction to exert the contact pressure.
  • the handle 62 of the mechanism 58 is in the closed position, in abutment against the left end of the slot 64.
  • the mechanism 58 with spring 72 is armed, and the trigger 44 is inactive.
  • the point of application 103 of the force P is located on the edge of the core 80.
  • the appearance of a short-circuit current in the pole causes an effect of electrodynamic repulsion of the contacts, with a rapid displacement of the movable contact 22, which pivots around its axis 84, in the direction of the needles of a watch.
  • the electrodynamic repulsion ensures an abrupt opening of the contacts of the faulty pole, before the mechanical intervention of the control mechanism 58.
  • the spring 72 and the toggle joint 60 remain stationary, as does the switching bar 70, the position of which corresponds to that of FIG. 1.
  • the arc remains anchored between the movable contact 22 and the fixed arcing horn 104, and is propelled towards the deionization plates of the extinguishing chamber 74.
  • the movable contact 22 is open to the maximum, and is in abutment against the wall of the bulb 16.
  • the arc is cooled by the sheets of the chamber 74, and the trigger 44 begins to control the trigger phase of the mechanism 58 (see arrows).
  • the latch 56 releases the toggle joint 60 causing the spring 72 to relax, and the bar 70 to rotate clockwise, so as to confirm the opening of the moving contact 22.
  • the slots 96, 98 advantageously have hooking surfaces shaped to temporarily block the movable contact 22 in the maximum repulsion position.
  • FIG. 9 shows a phase of manual opening of the circuit breaker 10 by actuation of the handle 62 in the direction of the arrow.
  • the mechanism 58 remains armed, and the rotation of the bar 70 causes the movable contact 22 to move towards the open position as soon as the lever 62 has passed the intermediate position of the opening dead center.
  • spiral spring 90 can be replaced by any other type of spring.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

The spring (90) includes a feeler element (94) interacting by sliding over a bearing surface 80a of the moving contact (22) so as to alter the point of application (103) of the pressure force P in the second active repulsion position, entailing a reduction in the return torque before action by the mechanism (58). The moving contact (22) is fork-shaped, being articulated on an eccentric spindle (84) parallel to the axis of rotation of the bar (70). The spiral spring (90) is mounted floating in the hollow (92) of the bar (70), and comprises two helical windings (90a), (90b) of metal wire. <IMAGE>

Description

L'invention est relative à un disjoncteur limiteur multipolaire à boîtier isolant moulé, renfermant :

  • un dispositif interrupteur de courant ayant par pôle des éléments de contacts séparables, à répulsion électrodynamique, et au moins une chambre d'extinction d'arc,
  • un mécanisme de commande à genouillère associée à un ressort d'embiellage, et à un dispositif de déclenchement,
  • un barreau de commutation en matériau isolant servant de support aux contacts mobiles de l'ensemble des pôles, ledit barreau étant accouplé mécaniquement à la genouillère pour être déplacé par le mécanisme entre la position de fermeture, et la position d'ouverture des contacts,
  • une manette accouplée au mécanisme en traversant une lumière de passage dans la face avant du boîtier,
  • le contact mobile de chaque pôle étant formé par un bras de contact articulé sur un axe solidaire du barreau, ledit contact mobile étant déplaçable par répulsion électrodynamique à partir d'une première position de repos vers une deuxième position active, et l'axe du contact mobile étant excentré par rapport à l'axe de rotation du barreau,
       et des moyens élastiques comprenant un ressort logé dans un évidement du barreau pour assurer la pression de contact et pour ralentir la retombée du contact mobile vers la première position de repos, le ressort coopérant à glissement avec une surface d'appui du contact mobile pour modifier le point d'application de la force de pression P au cours de la course d'ouverture.
The invention relates to a multipole limiting circuit breaker with molded insulating housing, containing:
  • a current interrupting device having, by pole, separable contact elements, with electrodynamic repulsion, and at least one arc extinguishing chamber,
  • a toggle control mechanism associated with a connecting rod spring, and a triggering device,
  • a switching bar made of insulating material serving as a support for the movable contacts of all the poles, said bar being mechanically coupled to the toggle joint to be moved by the mechanism between the closed position and the open position of the contacts,
  • a lever coupled to the mechanism by crossing a passage light in the front face of the housing,
  • the movable contact of each pole being formed by a contact arm articulated on an axis integral with the bar, said movable contact being displaceable by electrodynamic repulsion from a first rest position towards a second active position, and the axis of the contact mobile being eccentric relative to the axis of rotation of the bar,
    and elastic means comprising a spring housed in a recess of the bar to ensure the contact pressure and to slow down the fall of the movable contact towards the first rest position, the spring cooperating with sliding with a bearing surface of the movable contact to modify the point of application of the pressure force P during the opening stroke.

Dans ce premier type de disjoncteur limiteur, l'apparition d'un courant de court-circuit provoque dans une première phase l'ouverture rapide, par répulsion électrodynamique, des contacts du pôle en défaut, et dans une deuxième phase le déclenchement du mécanisme piloté par les moyens de déclenchement. La rotation du barreau de commutation pour l'ouverture définitive des contacts intervient uniquement durant la deuxième phase après déverrouillage de levier de déclenchement par le verrou. Le barreau reste immobile pendant la première phase de répulsion électrodynamique.In this first type of limiting circuit breaker, the appearance of a short-circuit current causes in a first phase the rapid opening, by electrodynamic repulsion, of the contacts of the faulty pole, and in a second phase the triggering of the piloted mechanism by the triggering means. The rotation of the switching rod for the final opening of the contacts occurs only during the second phase after the release lever is unlocked by the latch. The bar remains stationary during the first phase of electrodynamic repulsion.

Seul, le bras de contact du pôle en défaut s'ouvre, les contacts des autres pôles restant fermés durant cette première phase. Il est essentiel que la rotation du barreau pour la confirmation de l'ouverture du disjoncteur intervienne avant la retombée du bras de contact vers la position de fermeture. Le défaut de coordination entre les deux phases est dû principalement au maintien du barreau en position de fermeture durant la première phase de répulsion et peut provoquer des battements des contacts et une usure prématurée du disjoncteur.Only the contact arm of the faulty pole opens, the contacts of the other poles remaining closed during this first phase. It is essential that the rotation of the bar for confirmation of the opening of the circuit breaker occurs before the contact arm has dropped to the closed position. The lack of coordination between the two phases is mainly due to the maintenance of the bar in the closed position during the first repulsion phase and can cause contact beating and premature wear of the circuit breaker.

Selon le document US-A-4.480.242, le contact mobile est soumis à une variation du couple de rappel du ressort de pression de contact, ledit couple étant croissant jusqu'à une position intermédiaire de la course d'ouverture, puis décroissant jusqu'à la position d'ouverture.According to document US-A-4,480,242, the movable contact is subjected to a variation of the return torque of the contact pressure spring, said torque being increasing to an intermediate position of the opening stroke, then decreasing until 'in the open position.

Le document FR-A 2553 930 de la demanderesse appartient à un deuxième type de disjoncteur limiteur ayant un mécanisme réversible, dans lequel l'axe de rotation du barreau coïncide avec le point d'articulation de chaque bras de contact. Le ressort de traction est ancré entre le contact mobile et le barreau.Document FR-A 2553 930 of the applicant belongs to a second type of limiting circuit breaker having a reversible mechanism, in which the axis of rotation of the bar coincides with the point of articulation of each contact arm. The tension spring is anchored between the movable contact and the bar.

Le bras de contact de chaque pôle coopère avec le dispositif à genouillère pour entraîner à rotation le barreau de commutation dans le sens d'ouverture après l'entrée en action des moyens de répulsion électrodynamique du pôle en défaut de manière à autoriser la séparation des contacts de tous les pôles avant le déverrouillage du levier de déclenchement par le verrou.The contact arm of each pole cooperates with the toggle device to rotate the switching rod in the opening direction after the actuation of the electrodynamic repulsion means of the faulty pole so as to allow contact separation of all the poles before the release of the release lever by the latch.

La réversibilité du mécanisme par rotation du barreau pendant la première phase d'ouverture électrodynamique accélère le temps de déclenchement pour confirmer l'ouverture définitive du disjoncteur. La rotation du barreau avant l'intervention du déclencheur est rendue possible grâce à la déformation de la genouillère dont l'angle de décalage des biellettes est compris en position de fermeture entre 10 et 20 degrés.The reversibility of the mechanism by rotation of the bar during the first phase of electrodynamic opening accelerates the tripping time to confirm the definitive opening of the circuit breaker. The rotation of the bar before the intervention of the trigger is made possible thanks to the deformation of the toggle joint whose angle of offset of the rods is comprised in the closed position between 10 and 20 degrees.

L'invention se rapporte au premier type de disjoncteur limiteur, et a pour objet d'améliorer le système anti-retombée du contact mobile en fin de course de répulsion.The invention relates to the first type of limiting circuit breaker, and aims to improve the anti-fallout system of the movable contact at the end of the repulsion stroke.

Le disjoncteur selon l'invention est caractérisé en ce que:
   le contact mobile est conformé en fourche ayant une âme commune de support de deux bras de contact, et une queue de maintien articulée sur l'axe et que le ressort 90 en spirale est monté flottant dans l'évidement du barreau et comporte un organe palpeur coopérant avec deux fentes d'équilibrage de la surface d'appui solidaire de l'âme pour répartir la pression de contact sur les deux bras de contact.The circuit breaker according to the invention is characterized in that:
the movable contact is shaped like a fork having a common core for supporting two contact arms, and a holding tail articulated on the axis and that the spiral spring 90 is mounted floating in the recess of the bar and comprises a feeler member cooperating with two balancing slots of the support surface integral with the core to distribute the contact pressure on the two contact arms.

Le ressort en spirale comporte deux enroulements hélicoïdaux de fil métallique, disposés coaxialement dans l'évidement en étant interconnectés dans la zone centrale par une liaison élastique saillante constituant ledit palpeur, et comprenant deux brins d'extrémités en appui contre une paroi du barreau.The spiral spring comprises two helical windings of metal wire, arranged coaxially in the recess by being interconnected in the central zone by a projecting elastic connection constituting said feeler, and comprising two strands of ends bearing against a wall of the bar.

La répartition de la pression de contact avec le ressort en spirale s'effectue au moyen de deux fentes d'équilibrage prévues sur la surface d'appui de l'âme du contact mobile en fourche. Chaque fente est dotée de surfaces d'accrochage pour bloquer temporairement le contact mobile dans la deuxième position active.The distribution of the contact pressure with the spiral spring is effected by means of two balancing slots provided on the bearing surface of the core of the movable fork contact. Each slot has hooking surfaces to temporarily block the movable contact in the second active position.

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

  • la figure 1 est une vue schématique en coupe d'un disjoncteur selon l'invention, représenté en position de fermeture,
  • la figure 2 est une vue en élévation du barreau de commutation équipé des contacts mobiles de l'ensemble des pôles, le barreau étant vu du côté des contacts fixes,
  • la figure 3 représente le barreau de la figure 2, vu du côté opposé,
  • la figure 4 montre une vue en coupe du barreau selon la ligne 4-4 de la figure 3, le contact mobile se trouvant dans une première position de repos,
  • la figure 5 représente une vue partielle à l'échelle agrandie d'un pôle du barreau de la figure 3,
  • la figure 6 est une vue identique de la figure 4, le contact mobile se trouvant dans une deuxième position active après répulsion électrodynamique,
  • les figures 7 et 8 sont des vues identiques à la figure 1, respectivement au début et à la fin de la phase de répulsion électrodynamique,
  • la figure 9 montre une vue identique à la figure 1 lors d'une ouverture manuelle du disjoncteur.
Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention, given by way of nonlimiting example, and represented in the appended files, in which:
  • FIG. 1 is a schematic sectional view of a circuit breaker according to the invention, shown in the closed position,
  • FIG. 2 is an elevation view of the switching rod equipped with the movable contacts of all the poles, the rod being seen from the side of the fixed contacts,
  • FIG. 3 represents the bar of FIG. 2, seen from the opposite side,
  • FIG. 4 shows a sectional view of the bar along line 4-4 of FIG. 3, the movable contact being in a first rest position,
  • FIG. 5 represents a partial view on an enlarged scale of a pole of the bar of FIG. 3,
  • FIG. 6 is an identical view to FIG. 4, the movable contact being in a second active position after electrodynamic repulsion,
  • FIGS. 7 and 8 are views identical to FIG. 1, respectively at the start and at the end of the electrodynamic repulsion phase,
  • Figure 9 shows a view identical to Figure 1 during manual opening of the circuit breaker.

Sur la figure 1, un disjoncteur multipolaire 10 à boîtier 12 isolant moulé, comporte un module de coupure 14 par pôle, formé par une ampoule 16 monobloc en matière plastique moulée, et ayant une forme de parallélépipède rectangle. L'ampoule 16 comprend une face avant 18 ayant un orifice 20 de passage du contact mobile 22, et le module de coupure 14 comprend un dispositif à répulsion électrodynamique des contacts.In FIG. 1, a multipolar circuit breaker 10 with molded insulating casing 12, comprises a breaking module 14 per pole, formed by a one-piece bulb 16 made of molded plastic, and having the shape of a rectangular parallelepiped. The bulb 16 comprises a front face 18 having an orifice 20 for passage of the movable contact 22, and the breaking module 14 comprises a device for electrodynamic repulsion of the contacts.

A l'intérieur de l'ampoule 16, se trouvent deux contacts fixes 24, 26 reliés respectivement par des conducteurs 28, 30 de liaison à une première plage 32 d'une borne de raccordement 34, et à une deuxième plage 36 destinée à être connectée par une vis 38 à une troisième plage de contact 40 d'un dispositif de déclenchement 42.Inside the bulb 16, there are two fixed contacts 24, 26 connected respectively by conductors 28, 30 for connection to a first pad 32 of a connection terminal 34, and to a second pad 36 intended to be connected by a screw 38 to a third contact pad 40 of a trigger device 42.

Le dispositif de déclenchement 42 comporte un déclencheur magnétothermique 44 équipé à l'opposé de la plage 40, d'une quatrième plage de contact 46 faisant partie de l'autre borne 48 de raccordement du pôle. Le déclencheur 44 est inséré électriquement en série dans le pôle avec les contacts 22, 24, 26 du module de coupure 14.The tripping device 42 comprises a magnetothermal trip device 44 equipped opposite the pad 40, with a fourth contact pad 46 forming part of the other terminal 48 for connecting the pole. The trip device 44 is electrically inserted in series in the pole with the contacts 22, 24, 26 of the breaking module 14.

Le dispositif de déclenchement 42 comprend de plus une barre de déclenchement 50 montée à rotation limitée entre une position armée et une position déclenchée en fonction de la position de l'organe d'actionnement du déclencheur 44, par exemple la bilame 52 ou la palette 54. La barre 50 rotative est déplacée vers la position déclenchée dès que le courant circulant dans le pôle dépasse un seuil prédéterminé. La barre de déclenchement 50 coopère d'autre part avec un verrou 56 d'accrochage d'un mécanisme 58 de commande à genouillère 60 et à manette 62.The triggering device 42 further comprises a trigger bar 50 mounted with limited rotation between an armed position and a triggered position as a function of the position of the actuating member of the trigger 44, for example the bimetallic strip 52 or the pallet 54 The rotary bar 50 is moved to the triggered position as soon as the current flowing in the pole exceeds a predetermined threshold. The trigger bar 50 also cooperates with a latch 56 for hooking a mechanism 58 for controlling the toggle joint 60 and the lever 62.

Le mécanisme 58 est commun à l'ensemble des pôles, et est logé à l'intérieur du boîtier 12, seule la manette 62 étant accessible de l'extérieur en traversant une lumière 64 ménagée dans la face avant du boîtier 12, pour la commande manuelle du disjoncteur 10.The mechanism 58 is common to all of the poles, and is housed inside the housing 12, only the handle 62 being accessible from the outside by passing through a lumen 64 formed in the front face of the housing 12, for controlling manual circuit breaker 10.

La biellette inférieure 66 de la genouillère 60 est accouplée à une protubérance 68 d'un barreau 70 de commutation servant de support aux contacts mobiles 22 de tous les pôles. Le barreau 70 de commutation est réalisé en matériau isolant et s'étend parallèlement à la barre de déclenchement 50 dans la direction transversale des pôles.The lower link 66 of the toggle joint 60 is coupled to a protuberance 68 of a switching bar 70 serving to support the movable contacts 22 of all the poles. The switching bar 70 is made of insulating material and extends parallel to the trigger bar 50 in the transverse direction of the poles.

Une action de déverrouillage de la barre de déclenchement 50 sur le verrou 56 libère le mécanisme 58, lequel se désarme sous l'action de détente d'un ressort 72 d'embiellage, entraînant le déplacement par pivotement de la genouillère 60, et la rotation du barreau 70 vers la position d'ouverture des contacts 22, 24, 26 de tous les pôles. L'ordre de déverrouillage du verrou 56 peut provenir du déclencheur 44 magnétothermique, ou d'un déclencheur auxiliaire, notamment à manque de tension MN, à émission de courant MX, différentiel, etc...An unlocking action of the trigger bar 50 on the latch 56 releases the mechanism 58, which disarms under the expansion action of a connecting rod spring 72, causing the pivoting movement of the toggle joint 60, and the rotation from the bar 70 to the open position of the contacts 22, 24, 26 of all the poles. The lock 56 unlocking order can come from the thermomagnetic trip device 44, or from an auxiliary trip device, in particular with MN voltage shortage, with MX current emission, differential, etc.

Chaque module de coupure 14 renferme deux chambres d'extinction d'arc, dont une seule 74 est représentée sur la figure 1, chaque chambre se trouvant en communication avec une ouverture ou canal 76 d'échappement des gaz de coupure vers l'extérieur de l'ampoule 16. Chaque chambre d'extinction d'arc 74 est formée par un empilage des tôles de désionisation à encoches en V orientées vers le contact mobile 22.Each cut-off module 14 contains two arc extinguishing chambers, of which only one 74 is shown in FIG. 1, each chamber being in communication with an opening or channel 76 for exhaust of the cutting gases to the outside of the bulb 16. Each arc extinguishing chamber 74 is formed by a stack of deionization sheets with V-notches oriented towards the movable contact 22.

Sur les figures 2 et 3, le barreau de commutation 70 d'un disjoncteur tripolaire est équipé de trois contacts mobiles 22 identiques, répartis à intervalles réguliers le long de la direction transversale du barreau 70. Chaque contact mobile 22 présente une forme de fourche à deux bras de contact 22a, 22b, parallèles, coopérant en position de fermeture avec les deux contacts fixes 24, 26.In FIGS. 2 and 3, the switching bar 70 of a three-pole circuit breaker is equipped with three identical movable contacts 22, distributed at regular intervals along the transverse direction of the bar 70. Each movable contact 22 has the form of a fork two contact arms 22a, 22b, parallel, cooperating in the closed position with the two fixed contacts 24, 26.

L'intérieur de l'ampoule 16 de chaque module de coupure 14 est subdivisé par une paroi isolante intermédiaire en deux compartiments adjacents, dans lesquels pénètrent les deux bras 22a, 22b du contact mobile 22 en fourche à travers l'orifice 2o, le contact mobile 22 se trouvant positionné à cheval sur la paroi lors de son pivotement entre les positions de fermeture et d'ouverture. Le barreau 70 est guidé en rotation par des paliers (non représentés) prévus dans l'ampoule 16 des différents modules de coupure 14.The interior of the bulb 16 of each cut-off module 14 is subdivided by an intermediate insulating wall into two adjacent compartments, into which the two arms 22a, 22b of the movable contact 22 in forks penetrate through the orifice 2o, the contact mobile 22 being positioned astride the wall during its pivoting between the closed and open positions. The bar 70 is guided in rotation by bearings (not shown) provided in the bulb 16 of the different cut-off modules 14.

En référence aux figures 4 à 6, chaque contact mobile 22 en fourche comporte une base 80 commune de support des deux bras de contact 22a, 22b verticaux, de manière à former un U renversé. La base 80 rectiligne s'étend dans la direction transversale du barreau 70, et est équipée dans la zone centrale d'une queue 82 de maintien dont l'extrémité libre est articulée sur un axe 84 horizontal solidaire du barreau 70. La queue 82 est située dans le plan médian de symétrie avec une orientation inverse par rapport aux deux bras de contact 22a, 22b élémentaires.With reference to FIGS. 4 to 6, each movable contact 22 in a fork has a common base 80 for supporting the two vertical contact arms 22a, 22b, so as to form an inverted U. The rectilinear base 80 extends in the transverse direction of the bar 70, and is equipped in the central area with a retaining tail 82 whose free end is articulated on a horizontal axis 84 integral with the bar 70. The tail 82 is located in the median plane of symmetry with an opposite orientation relative to the two elementary contact arms 22a, 22b.

L'axe 84 de chaque contact mobile 22 est logé avec jeu dans deux paliers 86, 88 alignés ménagés sur la face supérieure du barreau 70. L'axe 84 de contact est parallèle, et excentré par rapport à l'axe de rotation du barreau 70.The axis 84 of each movable contact 22 is housed with play in two aligned bearings 86, 88 formed on the upper face of the bar 70. The contact axis 84 is parallel, and eccentric with respect to the axis of rotation of the bar 70.

Chaque contact mobile 22 coopère avec un ressort 90 en spirale situé dans un évidement 92 délimité par un cadre 93 rectangulaire du barreau 70 pour assurer la pression de contact en position de fermeture. Le ressort 90 comprend deux enroulements hélicoïdaux 90a, 90b coaxiaux réalisés en fil métallique et interconnectés par une liaison élastique 94 intermédiaire, laquelle est traversée par la queue 82 en prenant appui sur la base 80 du contact mobile 22. La liaison élastique 94 du ressort 90 comprend deux brins de fil métallique, conformés selon une demi-spire jouant le rôle de palpeur, et ayant une partie saillante 94a incurvée vers le haut.Each movable contact 22 cooperates with a spiral spring 90 located in a recess 92 delimited by a rectangular frame 93 of the bar 70 to ensure the contact pressure in the closed position. The spring 90 comprises two helical windings 90a, 90b coaxial made of metal wire and interconnected by an intermediate elastic connection 94, which is crossed by the tail 82 while bearing on the base 80 of the movable contact 22. The elastic connection 94 of the spring 90 comprises two strands of wire, shaped according to a half-turn playing the role of feeler, and having a projecting portion 94a curved upwards.

Le palpeur de la liaison élastique 94 est positionné dans deux fentes 96, 98 en V prévues sur la surface d'appui 80a de la base 80 pour assurer l'équilibrage de la pression de contact en position de fermeture des contacts 22, 24, 26. Les deux fentes 96, 98 sont symétriques par rapport au plan médian passant par la queue 82, et les deux brins d'extrémités100, 102 des deux enroulements 90a, 90b sont plaqués en permanence contre la face supérieure interne du cadre 93.The probe of the elastic connection 94 is positioned in two slots 96, 98 in V provided on the bearing surface 80a of the base 80 to ensure the balancing of the contact pressure in the closed position of the contacts 22, 24, 26 The two slots 96, 98 are symmetrical with respect to the median plane passing through the tail 82, and the two end strands 100, 102 of the two windings 90a, 90b are permanently pressed against the internal upper face of the frame 93.

Le ressort 90 est monté flottant dans l'évidement 92 par rapport à l'axe du barreau 70 rotatif. La coopération du ressort 90 avec l'âme 80 du contact mobile 22 en fourche constitue un dispositif de maintien temporaire du contact en fin de course de répulsion électrodynamique.The spring 90 is mounted floating in the recess 92 relative to the axis of the rotary bar 70. The cooperation of the spring 90 with the core 80 of the movable contact 22 in the fork constitutes a device for temporarily maintaining the contact at the end of the electrodynamic repulsion stroke.

Le fonctionnement d'un pôle du disjoncteur 10 à répulsion électrodynamique est le suivant :The operation of a pole of the circuit breaker 10 with electrodynamic repulsion is as follows:

En position de fermeture représentée sur la figure 1, le contact mobile 22 en fourche se trouve en appui stable contre les contacts fixes 24, 26 correspondants. La réaction symétrique des deux brins 100, 102 du ressort 90 en spirale sur le cadre 93 du barreau 70 assure l'équilibrage de la pression de contact sur les deux bras 90a, 90b grâce à l'action de poussée répartie de la liaison élastique 94 ou palpeur sur l'âme 80. La figure 4 montre la force de pression P qui s'exerce sur le contact mobile 22 lorsque ce dernier se trouve dans une première position de repos. La ligne d'action de la force P est sensiblement perpendiculaire à la liaison électrique 94 du ressort 90, et sollicite le contact mobile 22 dans le sens inverse des aiguilles d'une montre pour exercer la pression de contact.
La manette 62 du mécanisme 58 se trouve dans la position de fermeture, en butée contre l'extrémité gauche de la lumière 64. Le mécanisme 58 à ressort 72 est armé, et le déclencheur 44 est inactif. Le point d'application 103 de la force P se trouve sur le bord de l'âme 80.In the closed position shown in Figure 1, the movable fork contact 22 is in stable support against the fixed contacts 24, 26 corresponding. The symmetrical reaction of the two strands 100, 102 of the spring 90 in a spiral on the frame 93 of the bar 70 ensures the balancing of the contact pressure on the two arms 90a, 90b thanks to the distributed thrust action of the elastic connection 94 or feeler on the core 80. FIG. 4 shows the pressure force P which is exerted on the movable contact 22 when the latter is in a first rest position. The line of action of the force P is substantially perpendicular to the electrical connection 94 of the spring 90, and urges the movable contact 22 in an anti-clockwise direction to exert the contact pressure.
The handle 62 of the mechanism 58 is in the closed position, in abutment against the left end of the slot 64. The mechanism 58 with spring 72 is armed, and the trigger 44 is inactive. The point of application 103 of the force P is located on the edge of the core 80.

Sur la figure 7, l'apparition d'un courant de court-circuit dans le pôle provoque un effet de répulsion électrodynamique des contacts, avec un déplacement rapide du contact mobile 22, lequel pivote autour de son axe 84, dans le sens des aiguilles d'une montre. La répulsion électrodynamique assure une ouverture brusque des contacts du pôle en défaut, avant l'intervention mécanique du mécanisme 58 de commande. Le ressort 72 et la genouillère 60 restent immobiles, ainsi que le barreau de commutation 70, dont la position correspond à celle de la figure 1. L'arc reste ancré entre le contact mobile 22 et la corne d'arc fixe 104, et est propulsé en direction des tôles de désionisation de la chambre d'extinction 74.In FIG. 7, the appearance of a short-circuit current in the pole causes an effect of electrodynamic repulsion of the contacts, with a rapid displacement of the movable contact 22, which pivots around its axis 84, in the direction of the needles of a watch. The electrodynamic repulsion ensures an abrupt opening of the contacts of the faulty pole, before the mechanical intervention of the control mechanism 58. The spring 72 and the toggle joint 60 remain stationary, as does the switching bar 70, the position of which corresponds to that of FIG. 1. The arc remains anchored between the movable contact 22 and the fixed arcing horn 104, and is propelled towards the deionization plates of the extinguishing chamber 74.

En fin de course d'ouverture sur répulstion (figure 8), le contact mobile 22 est ouvert au maximum, et se trouve en butée contre la paroi de l'ampoule 16. L'arc est refroidi par les tôles de la chambre 74, et le déclencheur 44 commence à piloter la phase de déclenchement du mécanisme 58 (voir flèches).At the end of the opening repulsion stroke (FIG. 8), the movable contact 22 is open to the maximum, and is in abutment against the wall of the bulb 16. The arc is cooled by the sheets of the chamber 74, and the trigger 44 begins to control the trigger phase of the mechanism 58 (see arrows).

Après déclenchement du mécanisme 58 (non représenté sur les figures), le verrou 56 libère la genouillère 60 entraînant la détente du ressort 72, et la rotation du barreau 70 dans le sens des aiguilles d'une montre, de manière à confirmer l'ouverture du contact mobile 22.After triggering of the mechanism 58 (not shown in the figures), the latch 56 releases the toggle joint 60 causing the spring 72 to relax, and the bar 70 to rotate clockwise, so as to confirm the opening of the moving contact 22.

Pendant les phases de répulsion électrodynamique représentées sur les figures 7 et 8, il est impératif que le contact mobile 22 ne se referme pas avant l'intervention du barreau 70 suite au déclenchement du mécanisme 58. Le retard de retombée du contact mobile 22 est obtenu grâce au déplacement du point d'application 103 de la force P qui s'exerce sur l'âme 80 lors de la répulsion.During the electrodynamic repulsion phases shown in Figures 7 and 8, it is imperative that the movable contact 22 does not close before the intervention of the bar 70 following the triggering of the mechanism 58. The fallout of the movable contact 22 is obtained thanks to the displacement of the point of application 103 of the force P which is exerted on the core 80 during the repulsion.

Dans la position de répulsion de la figure 6, le glissement de la liaison élastique 94 vers l'intérieur des fentes d'équilibrage 96, 98 modifie l'emplacement du point d'application 103 de la force P exercée par le ressort 90. La ligne d'action de la force P passe au voisinage de l'axe 84 de pivotement du contact mobile 22, ce qui diminue notablement le couple de rappel vers la position de fermeture. Cette diminution du couple de rappel permet de retarder la retombée du contact mobile 22 avant l'intervention du barreau 70.In the repulsion position of FIG. 6, the sliding of the elastic link 94 towards the inside of the balancing slots 96, 98 modifies the location of the point of application 103 of the force P exerted by the spring 90. line of action of the force P passes in the vicinity of the axis 84 of pivoting of the movable contact 22, which significantly reduces the restoring torque towards the closed position. This reduction in the return torque makes it possible to delay the fallout of the movable contact 22 before the intervention of the bar 70.

Les fentes 96, 98 comportent avantageusement des surfaces d'accrochage conformées pour bloquer temporairement le contact mobile 22 dans la position de répulsion maximum.The slots 96, 98 advantageously have hooking surfaces shaped to temporarily block the movable contact 22 in the maximum repulsion position.

La figure 9 montre une phase d'ouverture manuelle du disjoncteur 10 par l'actionnement de la manette 62 dans le sens de la flèche. Le mécanisme 58 reste armé, et la rotation du barreau 70 provoque le déplacement du contact mobile 22 vers la position d'ouverture dès que la manette 62 a dépassé la position intermédiaire du point mort ouverture.FIG. 9 shows a phase of manual opening of the circuit breaker 10 by actuation of the handle 62 in the direction of the arrow. The mechanism 58 remains armed, and the rotation of the bar 70 causes the movable contact 22 to move towards the open position as soon as the lever 62 has passed the intermediate position of the opening dead center.

Il n'y a pas de répulsion électrodynamique des contacts, et le point d'application 103 de la force P du ressort 90 correspond à celui de la figure 4.There is no electrodynamic repulsion of the contacts, and the point of application 103 of the force P of the spring 90 corresponds to that of FIG. 4.

Il est clair que le ressort 90 en spirale peut être remplacé par tout autre type de ressort.It is clear that the spiral spring 90 can be replaced by any other type of spring.

Claims (5)

Disjoncteur limiteur multipolaire à boîtier (12) isolant moulé, renfermant : - un dispositif interrupteur de courant ayant par pôle des éléments de contacts séparables (22), (24), (26) à répulsion électrodynamique, et au moins une chambre d'extinction d'arc (74), - un mécanisme (58) de commande à genouillère (60) associée à un ressort (72) d'embiellage, et à un dispositif de déclenchement (42), - un barreau de commutation (70) en matériau isolant servant de support aux contacts mobiles (22) de l'ensemble des pôles , ledit barreau étant accouplé mécaniquement à la genouillère (60) pour être déplacé par le mécanisme (58) entre la position de fermeture, et la position d'ouverture des contacts, - une manette (62) accouplée au mécanisme (58) en traversant une lumière (64) de passage dans la face avant du boîtier (12), - le contact mobile (22) de chaque pôle étant formé par un bras de contact articulé sur un axe (84) solidaire du barreau (70), ledit contact mobile (22) étant déplaçable par répulsion électrodynamique à partir d'une première position de repos vers une deuxième position active, et l'axe (84) du contact mobile (22) étant excentré par rapport à l'axe de rotation du barreau (70), - et des moyens élastiques comprenant un ressort (90) logé dans un évidement (92) du barreau (70) pour assurer la pression de contact et pour ralentir la retombée du contact mobile (22) vers la première position de repos, le ressort (90) coopérant à glissement avec une surface d'appui (80a) du contact mobile (22) pour modifier le point d'application (103) de la force de pression P au cours de la course d'ouverture, caractérisé en ce que
   le contact mobile (22) est conformé en fourche ayant une âme (80) commune de support de deux bras de contact (22a, 22b), et une queue (82) de maintien articulée sur l'axe (84) et que le ressort 90 en spirale est monté flottant dans l'évidement (92) du barreau (70) et comporte un organe palpeur (94) coopérant avec deux fentes d'équilibrage (96, 98) de la surface d'appui (80a) solidaire de l'âme (80) pour répartir la pression de contact sur les deux bras de contact (22a, 22b).Multipolar limiting circuit breaker with molded insulating housing (12), containing: - a current switching device having, by pole, separable contact elements (22), (24), (26) with electrodynamic repulsion, and at least one arc extinguishing chamber (74), - a toggle joint control mechanism (58) (60) associated with a connecting rod spring (72), and with a triggering device (42), - A switching bar (70) made of insulating material serving as a support for the movable contacts (22) of the set of poles, said bar being mechanically coupled to the toggle joint (60) to be moved by the mechanism (58) between the position closing, and the open position of the contacts, a handle (62) coupled to the mechanism (58) by passing through a lumen (64) passing through the front face of the housing (12), - the movable contact (22) of each pole being formed by a contact arm articulated on an axis (84) integral with the bar (70), said movable contact (22) being displaceable by electrodynamic repulsion from a first position of rest towards a second active position, and the axis (84) of the movable contact (22) being eccentric relative to the axis of rotation of the bar (70), - And elastic means comprising a spring (90) housed in a recess (92) of the bar (70) to ensure the contact pressure and to slow down the fall of the movable contact (22) towards the first rest position, the spring ( 90) cooperating slidingly with a bearing surface (80a) of the movable contact (22) to modify the point of application (103) of the pressure force P during the opening stroke, characterized in that
the movable contact (22) is shaped like a fork having a common core (80) for supporting two contact arms (22a, 22b), and a retaining tail (82) articulated on the axis (84) and the spring 90 in a spiral is mounted floating in the recess (92) of the bar (70) and comprises a feeler member (94) cooperating with two slots balancing (96, 98) of the bearing surface (80a) integral with the core (80) to distribute the contact pressure on the two contact arms (22a, 22b). Disjoncteur selon la revendication 1, caractérisé en ce que le ressort (90) en spirale comporte deux enroulements (90a), (90b) hélicoïdaux de fil métallique, disposés coaxialement dans l'évidement (92) en étant interconnectés dans la zone centrale par une liaison élastique saillante constituant ledit palpeur (94), et comprenant deux brins d'extrémités (100), (102) en appui contre une paroi du barreau (70).Circuit breaker according to claim 1, characterized in that the spiral spring (90) comprises two helical windings (90a), (90b) of metal wire, arranged coaxially in the recess (92) being interconnected in the central zone by a projecting elastic connection constituting said feeler (94), and comprising two end strands (100), (102) bearing against a wall of the bar (70). Disjoncteur selon la revendication 2, caractérisé en ce que la liaison élastique du palpeur (94) comprend une demi-spire de fil métallique ayant une partie saillante (94a) incurvée vers le haut.A circuit breaker according to claim 2, characterized in that the elastic connection of the probe (94) comprises a half-turn of metal wire having a projecting portion (94a) curved upwards. Disjoncteur selon la revendication 2 ou 3, caractérisé en ce que les deux enroulements (90a), (90b) du ressort (90) et les deux bras de contact (22a), (22b) du contact en fourche (22) sont disposés symétriquement dans chaque pôle par rapport au plan médian passant par la queue (82) de maintien.Circuit breaker according to claim 2 or 3, characterized in that the two windings (90a), (90b) of the spring (90) and the two contact arms (22a), (22b) of the fork contact (22) are arranged symmetrically in each pole relative to the median plane passing through the retaining tail (82). Disjoncteur selon l'une des revendications 1 à 4, caractérisé en ce que chaque fente (96), (98) est dotée de surfaces d'accrochage pour bloquer temporairement le contact mobile (22) dans la deuxième position active.Circuit breaker according to one of claims 1 to 4, characterized in that each slot (96), (98) is provided with attachment surfaces for temporarily blocking the movable contact (22) in the second active position.
EP94420094A 1993-04-07 1994-03-22 Multipole current limiting circuit breaker with electrodynamic repulsion Expired - Lifetime EP0619593B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9304298A FR2703824B1 (en) 1993-04-07 1993-04-07 Multipolar limiter circuit breaker with electrodynamic repulsion.
FR9304298 1993-04-07

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EP0619593A1 true EP0619593A1 (en) 1994-10-12
EP0619593B1 EP0619593B1 (en) 1997-04-16

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US (1) US5469121A (en)
EP (1) EP0619593B1 (en)
JP (1) JP3509923B2 (en)
DE (1) DE69402597T2 (en)
ES (1) ES2102171T3 (en)
FR (1) FR2703824B1 (en)

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DE69402597T2 (en) 1997-10-02
JP3509923B2 (en) 2004-03-22
ES2102171T3 (en) 1997-07-16
US5469121A (en) 1995-11-21
FR2703824A1 (en) 1994-10-14
EP0619593B1 (en) 1997-04-16
FR2703824B1 (en) 1995-05-12
DE69402597D1 (en) 1997-05-22
JPH06325678A (en) 1994-11-25

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