EP0514230A1 - Current switching apparatus - Google Patents

Current switching apparatus Download PDF

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Publication number
EP0514230A1
EP0514230A1 EP92401026A EP92401026A EP0514230A1 EP 0514230 A1 EP0514230 A1 EP 0514230A1 EP 92401026 A EP92401026 A EP 92401026A EP 92401026 A EP92401026 A EP 92401026A EP 0514230 A1 EP0514230 A1 EP 0514230A1
Authority
EP
European Patent Office
Prior art keywords
housing
heater
winding
fixed contact
wire
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.)
Withdrawn
Application number
EP92401026A
Other languages
German (de)
French (fr)
Inventor
Christian Blanchard
Michel Lauraire
Didier Vigouroux
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
La Telemecanique Electrique 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 La Telemecanique Electrique SA, Schneider Electric SE filed Critical La Telemecanique Electrique SA
Publication of EP0514230A1 publication Critical patent/EP0514230A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/40—Combined electrothermal and electromagnetic mechanisms
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities

Definitions

  • the present invention relates to a current switching device, comprising in a housing, at least one polar current path, established between two connection terminals, with, in series, a breaking pole formed by at least one fixed contact and at minus a movable contact, a thermal protection release consisting of a bimetallic strip surrounded by a heater and a magnetic protection release consisting of a winding wound around a coil carcass in which slides a mobile core, the winding wire being connected by an intermediate conductor to the end of the heater.
  • This magneto-thermal module includes a bimetal thermal trip device capable of controlling the opening of the contacts via a tripping mechanism, in response to an overload current.
  • the magneto-thermal module also includes an electromagnetic trip device provided with a movable core sliding in a coil carcass whose coil is traversed by the polar current. The displacement of the core, in response to an overload or an overcurrent, activates the opening of the contacts.
  • the two triggers are housed on the same side of the contact bridge as for example in patent EP-0 237 607.
  • this arrangement lengthens the conductive connections between the fixed contact and the bimetallic strip and between the magnetic trigger and the connection terminal.
  • the object of the present invention is to provide an arrangement of thermal and magnetic protection module which makes it possible to easily connect the components without the wires being bent and which reduces the length of the electrical connections extending between the fixed contact and the connection terminal. .
  • This arrangement allows the installation of an arc blowing loop between the two triggers of the module.
  • the invention allows good retention of the triggers in relation to the housing.
  • the industrialization of the module is facilitated by the arrangement of the parts making it up and by the accessibility of the welds ensuring electrical continuity.
  • the apparatus according to the invention is characterized in that the wire of the heater has a substantially straight lower end without curvature and soldered to the intermediate conductor which is soldered to a substantially straight end, without curvature, of the winding wire whose l other substantially straight end without curvature is welded to a tab extending parallel to the axis of the winding and extending by a pad carrying the connection terminal, the two trip devices being mounted on two conductive pads connected one to the contact fixed, the other to a terminal and carried by a removable support of the housing.
  • the bimetallic strip of the thermal trip device is fixed at its foot to a range of the conductor carrying the fixed contact and having a U-shape enveloping a support of the housing so that the fixed contact is disposed under the bimetallic strip and that is positioned towards the center of the device relative to the magnetic protection release.
  • the intermediate conductor joining the thermal trigger to the magnetic trigger joins the lower end of the heater to the lower end of the winding wire and has the shape of a loop so as to be used for arc blowing.
  • the support is a drawer which consists of a driver-carrying apron and two side walls providing an internal chamber opening into the channel formed by two partitions of the housing, on the side of the central part, these walls are 'inserting between these partitions so as to be adjacent to them.
  • the switch device illustrated in the drawings is a multi-pole protective device of the contactor-circuit breaker type, of which only one pole has been shown.
  • the device comprises a one-piece housing 1 associated with a cover 93.
  • the housing 1 and the cover 93 are produced by molding in an electrically insulating material (plastic).
  • the base 11 for fixing the box is directly secured to isolation partitions 18 which, two by two with the bottom 11 of the box, constitute a channel 15 delimiting the breaking chamber of a pole.
  • isolation partitions 18 extend perpendicular to the bottom or flat base 11 and parallel to each other.
  • the channel 15 cooperates with a drawer-support 3 which, on the one hand, delimits the breaking chamber 33 with the housing and which, on the other hand, carries a magnetic and thermal trip module 10.
  • the pole of the device which is represented is of the double break type. It has two fixed contacts 41 and 51 arranged on two conductors 4 and 5 connecting them respectively to connection terminals 48 or 58 intended to be connected to a power line.
  • a bridge 63 of movable contacts 61 and 62 cooperate with the fixed contacts to interrupt the current between the terminals. These movable contacts 61 and 62 move in translation relative to the fixed contacts 41 and 51, perpendicular to the line passing through these fixed contacts.
  • the plane of displacement and symmetry of the movable contacts 61 and 62 is marked PP '. In the closed position, the movable contacts are pressed against the fixed contacts. In the open position, the movable contacts are separated from the fixed contacts following an automatic tripping - in the event of overload or overcurrent - or a manual command.
  • the movable bridge 63 carrying the movable contacts 61 and 62 is mounted on a contact carrier module 6.
  • the bridge 63 moves between the fixed contacts and the bottom 11 of the housing.
  • the contact carrier module 6 comprises a mobile support 64 in which are mounted the contact bridges 63 of the different poles and associated operating slides 65. Each contact bridge 63 is housed sliding in a window of the support 64. A contact compression spring biases each bridge 63 associated, upwards, in the direction of closing of the contacts. As an indication, the spring is housed in the window. Each of the bridges 63 can be moved in the opening direction of the contacts by the associated slide 65.
  • This module 6 comprises as many slides as there are poles.
  • the module 6 is introduced, according to the plane PP ′, into a housing of the housing.
  • the support 64 has slots into which the partitions of the housing penetrate.
  • the mobile support 64 can slide, according to the plane PP ′, relative to the housing, being guided against the partitions of the housing.
  • the bridges 63 of the module 6 can be moved following a fault detected by the magnetic and thermal trigger assembly 10 and this after triggering the lock 92 which will be discussed later.
  • the bridges 63 of the module 6 can also be moved by electrodynamic repulsion or by a control button such as 91 which acts on the lock and the electromagnet.
  • the pads of the fixed contacts 41 and 51 are arranged on the conductors 4 and 5, on the side of the bottom 11 of the housing.
  • the fixed contacts 41 and 51 are positioned towards the central part of the device while the connection terminals 48 or 58 are positioned on the sides of the housing.
  • the conductor 4 directly connects the fixed contact 41 to the terminal 48.
  • Fixed contact 51 is connected in series to terminal 58 via conductor 5, a bimetal thermal trip unit, generally designated at 7, for protection against overload currents and an electromagnetic trip unit, generally designated at 8, for protection against short circuit currents.
  • trip units 7 and 8 the conductor 5 and the fixed contact 51, the terminal 58 and the intermediate connections are part of the same one-piece sub-assembly designated by the general reference 10.
  • the magnetic and thermal tripping module 10 is shown in detail in FIGS. 3 and 4. This module 10 is arranged on the side opposite to the electromagnet 94 relative to the plane PP ′.
  • the bimetallic trip unit 7 is positioned between the magnetic protection trip unit 8 and the translation plane PP ′ of the movable contact bridge 63. The axes of the bimetallic strip and of the trip unit 8 are parallel to PP ′.
  • the module 10 includes a drawer 3 made of electrically insulating material (plastic) which carries the triggers 7 and 8.
  • the drawer 3 has an upper deck 31 connected to two side walls 32. These walls provide in each drawer an internal chamber 33 forming a breaking chamber.
  • the internal chamber 33 of the drawer 3 opens into the associated channel 15, on the side of the central part marked by the plane PP ′.
  • the two side walls 32 and the adjoining upper deck 31 have a U-shaped cross section (parallel to PP ′).
  • the walls 32 of the drawer are inserted between two adjacent partitions 18 of the housing so as to be adjacent to them. Due to the U-shaped cross section of the drawer 3, the internal chamber 33 formed therein opens into the bottom of the corresponding channel.
  • the triggers 7 and 8 are housed between two partitions 18 of the housing.
  • the thermal trip device 7 associated with each pole comprises a flat bimetallic strip 71 extending in a plane parallel to the plane marked QQ ′ parallel to the partitions 18 and perpendicular to the plane PP ′. By its foot 75, it is fixed integrally to the pad 54 of the conductor 5 carrying the fixed contact 51.
  • a heater 73 isolated from the bimetallic strip. This heater is electrically connected by its upper end to the free end 72 of the bimetallic strip.
  • the free ends 72 of the triggers are capable of actuating, via the lock mechanism 92, the slides 65 of the module 6.
  • the plane of the bimetallic strip 71 is substantially parallel to the partitions 18.
  • the electromagnetic trip device 8 of each pole comprises a coil carcass 81 around which a control coil 82 is wound. It also comprises a movable core 83 sliding inside the coil carcass 81. A return spring is mounted between the core and the bobbin case. The movable core 83 extends axially out of the coil carcass and acts on the mechanism 92 itself acting on the slides 65 of the module 6.
  • the conductor 5 has a part or blade 52, located under the apron of the drawer 3, which carries the fixed contact 51 and is extended by a lateral portion 53 and by a track 54 folded over the top of the drawer 3.
  • This track 54 is integral foot 75 of bimetallic strip 71.
  • the substantially straight lower end 74 without curvature of the heater 73 extends parallel to the plane of the bimetallic strip, towards the plane PP ′.
  • This end 74 is connected, by an intermediate conductor 56 in the form of a loop, to the lower end 85 of the winding wire 82.
  • the upper end 84 of the winding wire is welded to a conductive piece 57 made of ferromagnetic material and consisting of a tab 571 and a pad 572 carrying the terminal 58 and the magnetic trigger 8.
  • the tab 571 extends parallel to the winding axis and is extended by the area 572 carrying the terminal 58.
  • the lower end 85 substantially straight and without curvature of the winding wire extends parallel to the plane of the bimetallic strip while the upper end 84 substantially straight and without curvature extends perpendicular to this plane.
  • the upper end 84 of the winding wire is welded at any height of the tab 571 according to the natural outlet of this end after winding.
  • the pads 54 and 572 are pressed against the top of the drawer 3 while the blade 52 is pressed under this drawer 3.
  • the part 57 has a folded part 573 which is housed in the coil carcass 81 so as to constitute the fixed core.
  • the ferromagnetic tab 571 also participates in the circulation of the flux created by the coil.
  • the intermediate conductor 56 in the form of a loop has a central stirrup 563 extending above the drawer and welded to the end 74 of the heater.
  • This central bracket 563 is connected to two lateral loops 561 and 562 extending vertically against the sides of the drawer 3.
  • the two lateral loops 561 and 562 meet a lateral bracket 564 extending above the drawer and below of the bobbin case 81.
  • the stirrup 564 is extended by a bar 565 to which the lower end 85 of the winding wire is welded.
  • the movable core 83 is extended by a coupling element 86 connected by a return mechanism 87 to the lock 92.
  • the lateral edges of the pad 54 engage in slides 182 formed on the partitions 18 of the housing.
  • the lateral edges of the track 572 engage in slides 183 formed on the partitions 18.
  • the range 572 engages in a groove 811 of the coil carcass 81 so that the latter is immobilized in translation.
  • the device also includes a lock release mechanism common to all the poles and housed in a compartment of the housing.
  • the mechanism 92 is coupled to a manual control and reset button 91 which is used for resetting, closing and opening of the contacts.
  • An electromagnet 94 for driving the contacts housed in the housing 1 acts on the module 6.
  • This electromagnet comprises, in a manner known per se, a fixed magnetic circuit, a movable armature 95 and a coil connected to terminals by a switch. The latter can be controlled in a manner known per se.
  • the movable armature 95 of the electromagnet is subject to a return spring and acts via the button 91 and / or another control.
  • the movable armature 95 of the electromagnet acts on a movable lifter 19, articulated around an axis 191 on the housing and actuating the movable support 64 of the module 6. This spreader allows the support 64 to move to operate the contacts .
  • So-called “deionization” plates can be placed near the contacts to facilitate rapid interruption of the current. These plates can be mounted on the drawers or on the housing.
  • the thermal trip device 7 acts on a differential system 76 which actuates, via the lock mechanism 92, the movable contacts.
  • the magneto-thermal trip device 8 acts, via the return mechanism 87 and the lock mechanism 92, on the movable contacts.

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

Abstract

The invention relates to a current switching apparatus comprising, in a casing (1), at least one polar current path established between two connection terminals (48, 58), with, in series, a breaker pole formed by at least one fixed contact (41, 51) and by at least one moving contact (61, 62), a thermal protection trip (7) consisting of a bimetallic strip (71) surrounded by a heater (73) and a magnetic protection trip (8) consisting of a winding (82) coiled around a coil former (81) within which there slides a movable core (83), the wire of the winding being connected by an intermediate conductor (56) to the end of the heater (73), characterised in that the wire of the heater (73) has a substantially upright and curvature-free lower end (74) welded to the intermediate conductor which is welded to a substantially upright, curvature-free end (85) of the winding wire whose other substantially upright and curvature-free end (84) is welded to a lug (571) which extends parallel to the axis of the winding and is prolonged by a tag (572) carrying the connection terminal (58), the two trips (7, 8) being mounted on two conductive tags (54, 572), the one connected to the fixed contact and the other to a terminal, and which are carried by a removable support (3) of the casing. <IMAGE>

Description

La présente invention se rapporte à un appareil interrupteur de courant, comprenant dans un boîtier, au moins un chemin de courant polaire, établi entre deux bornes de raccordement, avec, en série, un pôle de rupture formé par au moins un contact fixe et au moins un contact mobile, un déclencheur de protection thermique constitué d'un bilame entouré d'une chaufferette et un déclencheur de protection magnétique constitué par un bobinage enroulé autour d'une carcasse-bobine dans laquelle coulisse un noyau mobile, le fil du bobinage étant relié par un conducteur intermédiaire à l'extrémité de la chaufferette.The present invention relates to a current switching device, comprising in a housing, at least one polar current path, established between two connection terminals, with, in series, a breaking pole formed by at least one fixed contact and at minus a movable contact, a thermal protection release consisting of a bimetallic strip surrounded by a heater and a magnetic protection release consisting of a winding wound around a coil carcass in which slides a mobile core, the winding wire being connected by an intermediate conductor to the end of the heater.

Dans certains appareils de protection tels que les disjoncteurs ou contacteurs-disjoncteurs, on trouve un module de protection magnétique et thermique assurant une protection contre les surcharges. Ce module magnéto-thermique comporte un déclencheur thermique à bilame apte à commander l'ouverture des contacts via un mécanisme de déclenchement, en réponse à un courant de surcharge.In certain protective devices such as circuit breakers or contactor breakers, there is a magnetic and thermal protection module providing protection against overloads. This magneto-thermal module includes a bimetal thermal trip device capable of controlling the opening of the contacts via a tripping mechanism, in response to an overload current.

Le module magnéto-thermique comporte également un déclencheur électromagnétique pourvu d'un noyau mobile coulissant dans une carcasse-bobine dont la bobine est parcourue par le courant polaire. Le déplacement du noyau, en réponse à une surcharge ou à une surintensité, actionne l'ouverture des contacts.The magneto-thermal module also includes an electromagnetic trip device provided with a movable core sliding in a coil carcass whose coil is traversed by the polar current. The displacement of the core, in response to an overload or an overcurrent, activates the opening of the contacts.

Les deux déclencheurs (magnétique et thermique) sont logés d'un même côté du pont de contacts comme par exemple dans le brevet EP-0 237 607. Toutefois cet agencement allonge les liaisons conductrices entre le contact fixe et le bilame et entre le déclencheur magnétique et la borne de raccordement.The two triggers (magnetic and thermal) are housed on the same side of the contact bridge as for example in patent EP-0 237 607. However, this arrangement lengthens the conductive connections between the fixed contact and the bimetallic strip and between the magnetic trigger and the connection terminal.

La présente invention a pour but de fournir un agencement de module de protection thermique et magnétique qui permet de relier facilement les composants sans que les fils soient cambrés et qui réduit la longueur des liaisons électriques s'étendant entre le contact fixe et la borne de raccordement. Cet agencement permet l'installation d'une boucle de soufflage d'arc entre les deux déclencheurs du module. L'invention permet un bon maintien en position des déclencheurs par rapport au boîtier. L'industrialisation du module est facilitée par l'agencement des pièces le composant et par l'accessibilité des soudures assurant la continuité électrique.The object of the present invention is to provide an arrangement of thermal and magnetic protection module which makes it possible to easily connect the components without the wires being bent and which reduces the length of the electrical connections extending between the fixed contact and the connection terminal. . This arrangement allows the installation of an arc blowing loop between the two triggers of the module. The invention allows good retention of the triggers in relation to the housing. The industrialization of the module is facilitated by the arrangement of the parts making it up and by the accessibility of the welds ensuring electrical continuity.

L'appareil selon l'invention est caractérisé par le fait que le fil de la chaufferette présente une extrémité inférieure sensiblement droite et sans courbure et soudée au conducteur intermédiaire lequel est soudé à une extrémité sensiblement droite, sans courbure, du fil de bobinage dont l'autre extrémité sensiblement droite et sans courbure est soudée à une patte s'étendant parallèlement à l'axe du bobinage et se prolongeant par une plage portant la borne de raccordement, les deux déclencheurs étant montés sur deux plages conductrices reliées l'une au contact fixe, l'autre à une borne et portées par un support amovible du boîtier.The apparatus according to the invention is characterized in that the wire of the heater has a substantially straight lower end without curvature and soldered to the intermediate conductor which is soldered to a substantially straight end, without curvature, of the winding wire whose l other substantially straight end without curvature is welded to a tab extending parallel to the axis of the winding and extending by a pad carrying the connection terminal, the two trip devices being mounted on two conductive pads connected one to the contact fixed, the other to a terminal and carried by a removable support of the housing.

Selon une caractéristique, le bilame du déclencheur thermique est fixé à son pied à une plage du conducteur portant le contact fixe et ayant une forme en U enveloppant un support du boîtier de manière que le contact fixe soit disposé sous le bilame et que celui-ci soit positionné vers le centre de l'appareil par rapport au déclencheur de protection magnétique.According to one characteristic, the bimetallic strip of the thermal trip device is fixed at its foot to a range of the conductor carrying the fixed contact and having a U-shape enveloping a support of the housing so that the fixed contact is disposed under the bimetallic strip and that is positioned towards the center of the device relative to the magnetic protection release.

Selon une caractéristique, le conducteur intermédiaire réunissant le déclencheur thermique au déclencheur magnétique réunit l'extrémité inférieure de la chaufferette à l'extrémité inférieure du fil de bobinage et a la forme d'une boucle de manière à servir au soufflage d'arc.According to one characteristic, the intermediate conductor joining the thermal trigger to the magnetic trigger joins the lower end of the heater to the lower end of the winding wire and has the shape of a loop so as to be used for arc blowing.

Selon une autre caractéristique, le support est un tiroir qui se compose d'un tablier porte-conducteur et de deux parois latérales ménageant une chambre interne débouchant dans le canal formé par deux cloisons du boîtier, du côté de la partie centrale, ces parois s'insérant entre ces cloisons de manière à leur être adjacentes.According to another characteristic, the support is a drawer which consists of a driver-carrying apron and two side walls providing an internal chamber opening into the channel formed by two partitions of the housing, on the side of the central part, these walls are 'inserting between these partitions so as to be adjacent to them.

L'invention va maintenant être décrite avec plus de détail en se référant à un mode de réalisation donné à titre d'exemple et représenté par les dessins annexés sur lesquels :

  • la figure 1 est une vue schématique en élévation d'un appareil de protection conforme à l'invention ;
  • la figure 2 est une vue schématique de l'appareil de la figure 1, le module de protection magnéto-thermique étant séparé du boîtier ;
  • la figure 3 est une vue de détail du module magnéto-thermique associé à un pôle de l'appareil des figures 1 et 2 ;
  • la figure 4 est une vue de dessus de la figure 3 ;
  • la figure 5 est une vue en élévation des déclencheurs magnétique et thermique représentés séparés de leur support du boîtier ;
  • la figure 6 est une vue de dessus de la figure 5.
The invention will now be described in more detail with reference to an embodiment given by way of example and represented by the appended drawings in which:
  • Figure 1 is a schematic elevational view of a protective device according to the invention;
  • Figure 2 is a schematic view of the apparatus of Figure 1, the magneto-thermal protection module being separated from the housing;
  • Figure 3 is a detail view of the magneto-thermal module associated with a pole of the apparatus of Figures 1 and 2;
  • Figure 4 is a top view of Figure 3;
  • Figure 5 is an elevational view of the magnetic and thermal triggers shown separated from their support of the housing;
  • FIG. 6 is a top view of FIG. 5.

L'appareil interrupteur illustré par les dessins est un appareil de protection multipolaire du type contacteur-disjoncteur dont un seul pôle a été représenté.The switch device illustrated in the drawings is a multi-pole protective device of the contactor-circuit breaker type, of which only one pole has been shown.

L'appareil comprend un boîtier monobloc 1 associé à un couvercle 93.The device comprises a one-piece housing 1 associated with a cover 93.

Le boîtier 1 et le couvercle 93 sont réalisés par moulage en matériau électriquement isolant (plastique).The housing 1 and the cover 93 are produced by molding in an electrically insulating material (plastic).

Le socle 11 de fixation du boîtier est directement solidaire de cloisons d'isolement 18 qui constituent, deux à deux avec le fond 11 du boîtier, un canal 15 délimitant la chambre de coupure d'un pôle. Ces cloisons 18 s'étendent perpendiculairement au fond ou socle plat 11 et parallèlement entre elles.The base 11 for fixing the box is directly secured to isolation partitions 18 which, two by two with the bottom 11 of the box, constitute a channel 15 delimiting the breaking chamber of a pole. These partitions 18 extend perpendicular to the bottom or flat base 11 and parallel to each other.

Le canal 15 coopère avec un support-tiroir 3 qui, d'une part, délimite la chambre de coupure 33 avec le boîtier et qui, d'autre part, porte un module de déclenchement magnétique et thermique 10.The channel 15 cooperates with a drawer-support 3 which, on the one hand, delimits the breaking chamber 33 with the housing and which, on the other hand, carries a magnetic and thermal trip module 10.

Le pôle de l'appareil qui est représenté est du type à double coupure. Il comporte deux contacts fixes 41 et 51 disposés sur deux conducteurs 4 et 5 les reliant respectivement à des bornes de raccordement 48 ou 58 destinées à être raccordées à une ligne de puissance. Un pont 63 de contacts mobiles 61 et 62 coopère avec les contacts fixes pour interrompre le courant entre les bornes. Ces contacts mobiles 61 et 62 se déplacent en translation par rapport aux contacts fixes 41 et 51, perpendiculairement à la ligne passant par ces contacts fixes. Le plan de déplacement et de symétrie des contacts mobiles 61 et 62 est repéré PP'. En position de fermeture, les contacts mobiles sont plaqués contre les contacts fixes. En position d'ouverture, les contacts mobiles sont séparés des contacts fixes suite à un déclenchement automatique - en cas de surcharge ou de surintensité - ou à une commande manuelle.The pole of the device which is represented is of the double break type. It has two fixed contacts 41 and 51 arranged on two conductors 4 and 5 connecting them respectively to connection terminals 48 or 58 intended to be connected to a power line. A bridge 63 of movable contacts 61 and 62 cooperate with the fixed contacts to interrupt the current between the terminals. These movable contacts 61 and 62 move in translation relative to the fixed contacts 41 and 51, perpendicular to the line passing through these fixed contacts. The plane of displacement and symmetry of the movable contacts 61 and 62 is marked PP '. In the closed position, the movable contacts are pressed against the fixed contacts. In the open position, the movable contacts are separated from the fixed contacts following an automatic tripping - in the event of overload or overcurrent - or a manual command.

Le pont mobile 63 portant les contacts mobiles 61 et 62 est monté sur un module porte-contacts 6. Le pont 63 se déplace entre les contacts fixes et le fond 11 du boîtier.The movable bridge 63 carrying the movable contacts 61 and 62 is mounted on a contact carrier module 6. The bridge 63 moves between the fixed contacts and the bottom 11 of the housing.

Le module porte-contacts 6 comprend un support mobile 64 dans lequel sont montés les ponts de contact 63 des différents pôles et des coulisseaux de manoeuvre 65 associés. Chaque pont de contact 63 est logé coulissant dans une fenêtre du support 64. Un ressort de compression des contacts sollicite chaque pont 63 associé, vers le haut, dans le sens de fermeture des contacts. A titre indicatif, le ressort est logé dans la fenêtre. Chacun des ponts 63 peut être déplacé dans le sens d'ouverture des contacts par le coulisseau associé 65. Ce module 6 comporte autant de coulisseaux qu'il y a de pôles.The contact carrier module 6 comprises a mobile support 64 in which are mounted the contact bridges 63 of the different poles and associated operating slides 65. Each contact bridge 63 is housed sliding in a window of the support 64. A contact compression spring biases each bridge 63 associated, upwards, in the direction of closing of the contacts. As an indication, the spring is housed in the window. Each of the bridges 63 can be moved in the opening direction of the contacts by the associated slide 65. This module 6 comprises as many slides as there are poles.

Le module 6 s'introduit, selon le plan PP′, dans un logement du boîtier. Le support 64 présente des fentes dans lesquelles pénètrent les cloisons du boîtier. Le support mobile 64 peut coulisser, selon le plan PP′, par rapport au boîtier, en étant guidé contre les cloisons du boîtier.The module 6 is introduced, according to the plane PP ′, into a housing of the housing. The support 64 has slots into which the partitions of the housing penetrate. The mobile support 64 can slide, according to the plane PP ′, relative to the housing, being guided against the partitions of the housing.

Les ponts 63 du module 6 peuvent être déplacés suite à un défaut détecté par l'ensemble de déclenchement magnétique et thermique 10 et ce après déclenchement de la serrure 92 dont il sera question plus loin. Les ponts 63 du module 6 peuvent également être déplacés par répulsion électrodynamique ou par un bouton de commande tel que 91 qui agit sur la serrure et l'électroaimant.The bridges 63 of the module 6 can be moved following a fault detected by the magnetic and thermal trigger assembly 10 and this after triggering the lock 92 which will be discussed later. The bridges 63 of the module 6 can also be moved by electrodynamic repulsion or by a control button such as 91 which acts on the lock and the electromagnet.

Les pastilles des contacts fixes 41 et 51 sont disposées sur les conducteurs 4 et 5, du côté du fond 11 du boîtier. Les contacts fixes 41 et 51 se positionnent vers la partie centrale de l'appareil tandis que les bornes de raccordement 48 ou 58 se positionnent sur les côtés du boîtier.The pads of the fixed contacts 41 and 51 are arranged on the conductors 4 and 5, on the side of the bottom 11 of the housing. The fixed contacts 41 and 51 are positioned towards the central part of the device while the connection terminals 48 or 58 are positioned on the sides of the housing.

Le conducteur 4 relie directement le contact fixe 41 à la borne 48.The conductor 4 directly connects the fixed contact 41 to the terminal 48.

Le contact fixe 51 est relié en série à la borne 58 via le conducteur 5, un déclencheur thermique à bilame, désigné globalement en 7, pour la protection contre les courants de surcharge et un déclencheur électromagnétique, désigné globalement en 8, pour la protection contre les courants de court-circuit.Fixed contact 51 is connected in series to terminal 58 via conductor 5, a bimetal thermal trip unit, generally designated at 7, for protection against overload currents and an electromagnetic trip unit, generally designated at 8, for protection against short circuit currents.

Les déclencheurs 7 et 8, le conducteur 5 et le contact fixe 51, la borne 58 et les connexions intermédiaires font partie d'un même sous-ensemble monobloc désigné par le repère général 10.The trip units 7 and 8, the conductor 5 and the fixed contact 51, the terminal 58 and the intermediate connections are part of the same one-piece sub-assembly designated by the general reference 10.

Le module de déclenchement magnétique et thermique 10 est représenté en détail aux figures 3 et 4. Ce module 10 est disposé du côté opposé à l'électro-aimant 94 par rapport au plan PP′. Le déclencheur à bilame 7 est positionné entre le déclencheur de protection magnétique 8 et le plan de translation PP′ du pont de contacts mobiles 63. Les axes du bilame et du déclencheur 8 sont parallèles à PP′.The magnetic and thermal tripping module 10 is shown in detail in FIGS. 3 and 4. This module 10 is arranged on the side opposite to the electromagnet 94 relative to the plane PP ′. The bimetallic trip unit 7 is positioned between the magnetic protection trip unit 8 and the translation plane PP ′ of the movable contact bridge 63. The axes of the bimetallic strip and of the trip unit 8 are parallel to PP ′.

Le module 10 comporte un tiroir 3 en matériau électriquement isolant (plastique) qui porte les déclencheurs 7 et 8.The module 10 includes a drawer 3 made of electrically insulating material (plastic) which carries the triggers 7 and 8.

Le tiroir 3 présente un tablier supérieur 31 raccordé à deux parois latérales 32. Ces parois ménagent dans chaque tiroir une chambre interne 33 formant une chambre de coupure.The drawer 3 has an upper deck 31 connected to two side walls 32. These walls provide in each drawer an internal chamber 33 forming a breaking chamber.

La chambre interne 33 du tiroir 3 débouche dans le canal associé 15, du côté de la partie centrale repérée par le plan PP′.The internal chamber 33 of the drawer 3 opens into the associated channel 15, on the side of the central part marked by the plane PP ′.

Les deux parois latérales 32 et le tablier supérieur 31 attenant ont une section transversale (parallèlement à PP′) en forme de U. Les parois 32 du tiroir s'insèrent entre deux cloisons voisines 18 du boîtier de manière à leur être adjacentes. Du fait de la section transversale en U du tiroir 3, la chambre interne 33 ménagée dans celui-ci débouche dans le fond du canal correspondant.The two side walls 32 and the adjoining upper deck 31 have a U-shaped cross section (parallel to PP ′). The walls 32 of the drawer are inserted between two adjacent partitions 18 of the housing so as to be adjacent to them. Due to the U-shaped cross section of the drawer 3, the internal chamber 33 formed therein opens into the bottom of the corresponding channel.

Les déclencheurs 7 et 8 se logent entre deux cloisons 18 du boîtier.The triggers 7 and 8 are housed between two partitions 18 of the housing.

Le déclencheur thermique 7 associé à chaque pôle comprend un bilame plat 71 s'étendant dans un plan parallèle au plan repéré QQ′ parallèle aux cloisons 18 et perpendiculaire au plan PP′. Par son pied 75, il est fixé solidairement à la plage 54 du conducteur 5 portant le contact fixe 51. Autour du bilame est enroulé une chaufferette 73 isolée du bilame. Cette chaufferette est reliée électriquement par son extrémité supérieure à l'extrémité libre 72 du bilame. Les extrémités libres 72 des déclencheurs sont susceptibles d'actionner, par l'intermédiaire du mécanisme à serrure 92, les coulisseaux 65 du module 6.The thermal trip device 7 associated with each pole comprises a flat bimetallic strip 71 extending in a plane parallel to the plane marked QQ ′ parallel to the partitions 18 and perpendicular to the plane PP ′. By its foot 75, it is fixed integrally to the pad 54 of the conductor 5 carrying the fixed contact 51. Around the bimetallic strip is wound a heater 73 isolated from the bimetallic strip. This heater is electrically connected by its upper end to the free end 72 of the bimetallic strip. The free ends 72 of the triggers are capable of actuating, via the lock mechanism 92, the slides 65 of the module 6.

Le plan du bilame 71 est sensiblement parallèle aux cloisons 18.The plane of the bimetallic strip 71 is substantially parallel to the partitions 18.

Le déclencheur électro-magnétique 8 de chaque pôle comporte une carcasse-bobine 81 autour de laquelle est enroulée un bobinage de commande 82. Il comporte également un noyau mobile 83 coulissant à l'intérieur de la carcasse-bobine 81. Un ressort de rappel est monté entre le noyau et la carcasse-bobine. Le noyau mobile 83 se prolonge axialement hors de la carcasse-bobine et agit sur le mécanisme 92 agissant lui-même sur les coulisseaux 65 du module 6.The electromagnetic trip device 8 of each pole comprises a coil carcass 81 around which a control coil 82 is wound. It also comprises a movable core 83 sliding inside the coil carcass 81. A return spring is mounted between the core and the bobbin case. The movable core 83 extends axially out of the coil carcass and acts on the mechanism 92 itself acting on the slides 65 of the module 6.

Le conducteur 5 présente une partie ou lame 52, située sous le tablier du tiroir 3, qui porte le contact fixe 51 et se prolonge par une portion latérale 53 et par une plage 54 rabattue sur le dessus du tiroir 3. Cette plage 54 est solidaire du pied 75 du bilame 71.The conductor 5 has a part or blade 52, located under the apron of the drawer 3, which carries the fixed contact 51 and is extended by a lateral portion 53 and by a track 54 folded over the top of the drawer 3. This track 54 is integral foot 75 of bimetallic strip 71.

L'extrémité inférieure 74 sensiblement droite et sans courbure de la chaufferette 73 s'étend parallèlement au plan du bilame, vers le plan PP′. Cette extrémité 74 est connectée, par un conducteur intermédiaire 56 en forme de boucle, à l'extrémité inférieure 85 du fil de bobinage 82.The substantially straight lower end 74 without curvature of the heater 73 extends parallel to the plane of the bimetallic strip, towards the plane PP ′. This end 74 is connected, by an intermediate conductor 56 in the form of a loop, to the lower end 85 of the winding wire 82.

L'extrémité supérieure 84 du fil de bobinage est soudée à une pièce conductrice 57 réalisée en matière ferromagnétique et constituée d'une patte 571 et d'une plage 572 portant la borne 58 et le déclencheur magnétique 8. La patte 571 s'étend parallèlement à l'axe du bobinage et se prolonge par la plage 572 portant la borne 58. L'extrémité inférieure 85 sensiblement droite et sans courbure du fil de bobinage s'étend parallèlement au plan du bilame tandis que l'extrémité supérieure 84 sensiblement droite et sans courbure s'étend perpendiculairement à ce plan. L'extrémité supérieure 84 du fil de bobinage est soudée à n'importe quelle hauteur de la patte 571 suivant la sortie naturelle de cette extrémité après bobinage.The upper end 84 of the winding wire is welded to a conductive piece 57 made of ferromagnetic material and consisting of a tab 571 and a pad 572 carrying the terminal 58 and the magnetic trigger 8. The tab 571 extends parallel to the winding axis and is extended by the area 572 carrying the terminal 58. The lower end 85 substantially straight and without curvature of the winding wire extends parallel to the plane of the bimetallic strip while the upper end 84 substantially straight and without curvature extends perpendicular to this plane. The upper end 84 of the winding wire is welded at any height of the tab 571 according to the natural outlet of this end after winding.

Les plages 54 et 572 sont plaquées contre le dessus du tiroir 3 alors que la lame 52 est plaquée sous ce tiroir 3.The pads 54 and 572 are pressed against the top of the drawer 3 while the blade 52 is pressed under this drawer 3.

La pièce 57 présente une partie repliée 573 se logeant dans la carcasse-bobine 81 de manière à constituer le noyau fixe. La patte 571 en matière ferromagnétique participe également à la circulation du flux créé par la bobine.The part 57 has a folded part 573 which is housed in the coil carcass 81 so as to constitute the fixed core. The ferromagnetic tab 571 also participates in the circulation of the flux created by the coil.

Le conducteur intermédiaire 56 en forme de boucle présente un étrier central 563 s'étendant au-dessus du tiroir et soudé à l'extrémité 74 de la chaufferette. Cet étrier central 563 se raccorde à deux boucles latérales 561 et 562 s'étendant verticalement contre les flancs du tiroir 3. Les deux boucles latérales 561 et 562 se réunissent à un étrier latéral 564 s'étendant au-dessus du tiroir et au-dessous de la carcasse-bobine 81.The intermediate conductor 56 in the form of a loop has a central stirrup 563 extending above the drawer and welded to the end 74 of the heater. This central bracket 563 is connected to two lateral loops 561 and 562 extending vertically against the sides of the drawer 3. The two lateral loops 561 and 562 meet a lateral bracket 564 extending above the drawer and below of the bobbin case 81.

L'étrier 564 se prolonge par une barrette 565 à laquelle se soude l'extrémité inférieure 85 du fil de bobinage.The stirrup 564 is extended by a bar 565 to which the lower end 85 of the winding wire is welded.

Le noyau mobile 83 se prolonge par un élément d'attelage 86 relié par un mécanisme de renvoi 87 à la serrure 92.The movable core 83 is extended by a coupling element 86 connected by a return mechanism 87 to the lock 92.

Les bords latéraux de la plage 54 s'engagent dans des glissières 182 ménagées sur les cloisons 18 du boîtier. Les bords latéraux de la plage 572 s'engagent dans des glissières 183 ménagées sur les cloisons 18.The lateral edges of the pad 54 engage in slides 182 formed on the partitions 18 of the housing. The lateral edges of the track 572 engage in slides 183 formed on the partitions 18.

La plage 572 s'engage dans une gorge 811 de la carcasse-bobine 81 de manière que celle-ci soit immobilisée en translation.The range 572 engages in a groove 811 of the coil carcass 81 so that the latter is immobilized in translation.

L'appareil comprend également un mécanisme de déclenchement à serrure commun à l'ensemble des pôles et logé dans un compartiment du boîtier. Le mécanisme 92 est accouplé à un bouton de commande manuelle et de réarmement 91 qui sert au réarmement, à la fermeture et à l'ouverture des contacts.The device also includes a lock release mechanism common to all the poles and housed in a compartment of the housing. The mechanism 92 is coupled to a manual control and reset button 91 which is used for resetting, closing and opening of the contacts.

Un électro-aimant 94 d'entraînement des contacts se logeant dans le boîtier 1, agit sur le module 6. Cet électroaimant comprend, de manière connue en soi, un circuit magnétique fixe, une armature mobile 95 et une bobine reliée à des bornes par un interrupteur. Ce dernier est commandable de manière connue en soi. L'armature mobile 95 de l'électro-aimant est assujettie à un ressort de rappel et agit par l'intermédiaire du bouton 91 et/ou d'une autre commande.An electromagnet 94 for driving the contacts housed in the housing 1 acts on the module 6. This electromagnet comprises, in a manner known per se, a fixed magnetic circuit, a movable armature 95 and a coil connected to terminals by a switch. The latter can be controlled in a manner known per se. The movable armature 95 of the electromagnet is subject to a return spring and acts via the button 91 and / or another control.

L'armature mobile 95 de l'électro-aimant agit sur un palonnier mobile 19, articulé autour d'un axe 191 sur le boîtier et actionnant le support mobile 64 du module 6. Ce palonnier permet le déplacement du support 64 pour manoeuvrer les contacts.The movable armature 95 of the electromagnet acts on a movable lifter 19, articulated around an axis 191 on the housing and actuating the movable support 64 of the module 6. This spreader allows the support 64 to move to operate the contacts .

Des plaquettes dites "de désionisation" peuvent être disposées à proximité des contacts pour faciliter l'interruption rapide du courant. Ces plaquettes peuvent être montées sur les tiroirs ou sur le boîtier.So-called "deionization" plates can be placed near the contacts to facilitate rapid interruption of the current. These plates can be mounted on the drawers or on the housing.

Le fonctionnement de l'appareil va maintenant être décrit.The operation of the apparatus will now be described.

Le déclencheur thermique 7 agit sur un système différentiel 76 qui actionne, par l'intermédiaire du mécanisme à serrure 92, les contacts mobiles.The thermal trip device 7 acts on a differential system 76 which actuates, via the lock mechanism 92, the movable contacts.

Le déclencheur magnéto-thermique 8 agit, par l'intermédiaire du mécanisme à renvoi 87 et du mécanisme à serrure 92, sur les contacts mobiles.The magneto-thermal trip device 8 acts, via the return mechanism 87 and the lock mechanism 92, on the movable contacts.

Claims (10)

Appareil interrupteur de courant comprenant, dans un boîtier (1), au moins un chemin de courant polaire, établi entre deux bornes de raccordement (48,58), avec, en série, un pôle de rupture formé par au moins un contact fixe (41,51) et au moins un contact mobile (61,62), un déclencheur de protection thermique (7) constitué d'un bilame (71) entouré d'une chaufferette (73) et un déclencheur de protection magnétique (8) constitué par un bobinage (82) enroulé autour d'une carcasse-bobine (81) dans laquelle coulisse un noyau mobile (83), le fil du bobinage étant relié par un conducteur intermédiaire (56) à l'extrémité de la chaufferette (73), caractérisé par le fait que le fil de la chaufferette (73) présente une extrémité inférieure (74) sensiblement droite et sans courbure et soudée au conducteur intermédiaire lequel est soudé à une extrémité sensiblement droite (85), sans courbure, du fil de bobinage dont l'autre extrémité sensiblement droite et sans courbure (84) est soudée à une patte (571) s'étendant parallèlement à l'axe du bobinage et se prolongeant par une plage (572) portant la borne de raccordement (58), les deux déclencheurs (7,8) étant montés sur deux plages conductrices (54,572) reliées l'une au contact fixe, l'autre à une borne et portées par un support (3) amovible du boîtier.Current switching device comprising, in a housing (1), at least one polar current path, established between two connection terminals (48,58), with, in series, a breaking pole formed by at least one fixed contact ( 41.51) and at least one movable contact (61.62), a thermal protection release (7) consisting of a bimetallic strip (71) surrounded by a heater (73) and a magnetic protection release (8) by a coil (82) wound around a coil carcass (81) in which slides a movable core (83), the coil wire being connected by an intermediate conductor (56) to the end of the heater (73) , characterized in that the wire of the heater (73) has a substantially straight and curvature lower end (74) and soldered to the intermediate conductor which is soldered to a substantially straight, curved end (85) of the winding wire the other end of which is substantially straight and curved ure (84) is welded to a lug (571) extending parallel to the winding axis and extending by a pad (572) carrying the connection terminal (58), the two trip devices (7,8) being mounted on two conductive pads (54,572) connected one to the fixed contact, the other to a terminal and carried by a support (3) removable from the housing. Appareil selon la revendication 1, caractérisé par le fait que le bilame (71) du déclencheur thermique (7) est fixé à son pied (75) à une plage (54) du conducteur (5) portant le contact fixe (51) et ayant une forme en U enveloppant un support (3) du boîtier de manière que le contact fixe (51) soit disposé sous le bilame (71) et que celui-ci soit positionné vers le centre de l'appareil par rapport au déclencheur de protection magnétique (8).Apparatus according to claim 1, characterized in that the bimetallic strip (71) of the thermal release (7) is fixed at its foot (75) to a pad (54) of the conductor (5) carrying the fixed contact (51) and having a U-shape enveloping a support (3) of the housing so that the fixed contact (51) is disposed under the bimetallic strip (71) and that this is positioned towards the center of the device with respect to the magnetic protection release (8). Appareil selon la revendication 1 ou 2, caractérisé par le fait que le conducteur intermédiaire (56) réunissant le déclencheur thermique au déclencheur magnétique réunit l'extrémité inférieure (74) de la chaufferette (73) à l'extrémité inférieure (85) du fil de bobinage et a la forme d'une boucle de manière à servir au soufflage d'arc.Apparatus according to claim 1 or 2, characterized in that the intermediate conductor (56) joining the thermal trigger to the magnetic trigger joins the lower end (74) of the heater (73) to the lower end (85) of the wire winding and has the form of a loop so as to be used for arc blowing. Appareil selon l'une quelconque des revendications précédentes, caractérisé par le fait que le support (3) est un tiroir qui se compose d'un tablier (31) porte-conducteur et de deux parois latérales (32) ménageant une chambre interne (33) débouchant dans le canal (15) formé par deux cloisons (18) du boîtier, du côté de la partie centrale, ces parois (32) s'insérant entre ces deux cloisons (18) de manière à leur être adjacentes.Apparatus according to any one of the preceding claims, characterized in that the support (3) is a drawer which consists of an apron (31) carrying the conductor and two side walls (32) providing an internal chamber (33 ) opening into the channel (15) formed by two partitions (18) of the housing, on the side of the central part, these walls (32) fitting between these two partitions (18) so as to be adjacent to them. Appareil selon l'une quelconque des revendications précédentes caractérisé par le fait que le plan du bilame (71) est perpendiculaire au plan (P-P′) de symétrie et de translation des contacts mobiles, le pôle étant à double rupture.Apparatus according to any one of the preceding claims, characterized in that the plane of the bimetallic strip (71) is perpendicular to the plane (P-P ′) of symmetry and translation of the movable contacts, the pole being double-broken. Appareil selon l'une quelconque des revendications précédentes, caractérisé par le fait que le conducteur (5) réunissant le déclencheur thermique (7) au déclencheur magnétique (8) présente deux boucles de soufflage d'arc (561,562) qui sont plaquées chacune contre une face latérale du tiroir de support (3), en vis-à-vis d'une cloison (18) du boîtier (1) et se rejoignent sur une partie de lame (52) portant le contact fixe (51) et positionnée dans la chambre du tiroir (33) formant la chambre de coupure.Apparatus according to any one of the preceding claims, characterized in that the conductor (5) joining the thermal trip device (7) to the magnetic trip device (8) has two arc blowing loops (561,562) which are each pressed against a side face of the support drawer (3), facing a partition (18) of the housing (1) and meet on a blade part (52) carrying the fixed contact (51) and positioned in the drawer chamber (33) forming the breaking chamber. Appareil selon l'une quelconque des revendications précédentes caractérisé par le fait que la patte (571) soudée au fil de bobinage et la plage attenante (572) font partie d'une pièce conductrice (57) présentant une partie (573) qui se loge dans la carcasse-bobine (81) de manière à constituer le noyau fixe.Apparatus according to any one of the preceding claims, characterized in that the tab (571) welded to the winding wire and the adjacent pad (572) form part of a conductive part (57) having a part (573) which is housed in the coil carcass (81) so as to constitute the fixed core. Appareil selon l'une quelconque des revendications précédentes, caractérisé par le fait que les cloisons (18) du boîtier présentent des glissières (182,183) de centrage et de positionnement de chaque déclencheur (7, 8).Apparatus according to any one of the preceding claims, characterized in that the partitions (18) of the housing have slides (182,183) for centering and positioning each trigger (7, 8). Appareil selon l'une quelconque des revendications précédentes, caractérisé par le fait que les boucles de soufflage d'arc (461,462) sont isolées entre le tiroir (3) et les cloisons (18) du boîtier.Apparatus according to any one of the preceding claims, characterized in that the arc blowing loops (461,462) are insulated between the drawer (3) and the partitions (18) of the housing. Appareil selon l'une quelconque des revendications précédentes caractérisé par le fait que la pièce (57) présentant une patte (571) soudée au fil de bobinage et une plage (572) supportant le déclencheur magnétique (8) est réalisée en matériau ferromagnétique.Apparatus according to any one of the preceding claims, characterized in that the part (57) having a tab (571) welded to the winding wire and a pad (572) supporting the magnetic trigger (8) is made of ferromagnetic material.
EP92401026A 1991-05-13 1992-04-13 Current switching apparatus Withdrawn EP0514230A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9105748 1991-05-13
FR9105748A FR2676592B1 (en) 1991-05-13 1991-05-13 THERMAL AND MAGNETIC PROTECTION CURRENT SWITCHING APPARATUS.

Publications (1)

Publication Number Publication Date
EP0514230A1 true EP0514230A1 (en) 1992-11-19

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Application Number Title Priority Date Filing Date
EP92401026A Withdrawn EP0514230A1 (en) 1991-05-13 1992-04-13 Current switching apparatus

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US (1) US5276417A (en)
EP (1) EP0514230A1 (en)
JP (1) JPH0628963A (en)
FR (1) FR2676592B1 (en)

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AU706793B2 (en) * 1996-12-31 1999-06-24 Lg Industrial Systems Co. Ltd. Separable circuit breaker
US6150908A (en) * 1998-09-03 2000-11-21 Fuji Electric Co., Ltd. Circuit breaker with metal melt isolation device
DE102006055007A1 (en) * 2006-11-22 2008-05-29 Abb Ag Installation switching device with a double break
DE102008016036A1 (en) * 2008-03-28 2009-10-01 Abb Ag Installation switching device with a double break
DE102011008831A1 (en) * 2011-01-19 2012-07-19 Abb Ag Istallationsschaltgerät
KR101252409B1 (en) * 2011-12-02 2013-04-08 현대중공업 주식회사 Base assembly having a heater combination portion and circuit breaker for electric wiring having the same
CN108054066B (en) * 2017-12-15 2023-09-12 浙江正泰电器股份有限公司 Cold bending rotating shaft structure of electromagnetic release of circuit breaker
CN111430192A (en) * 2020-03-25 2020-07-17 德力西电气有限公司 Circuit breaker with bimetallic strip adjustable in effective length

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Also Published As

Publication number Publication date
FR2676592B1 (en) 1993-07-23
FR2676592A1 (en) 1992-11-20
US5276417A (en) 1994-01-04
JPH0628963A (en) 1994-02-04

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