EP0261189B1 - Protection cutting apparatus provided with an arc breaking screen - Google Patents

Protection cutting apparatus provided with an arc breaking screen Download PDF

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Publication number
EP0261189B1
EP0261189B1 EP87902102A EP87902102A EP0261189B1 EP 0261189 B1 EP0261189 B1 EP 0261189B1 EP 87902102 A EP87902102 A EP 87902102A EP 87902102 A EP87902102 A EP 87902102A EP 0261189 B1 EP0261189 B1 EP 0261189B1
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EP
European Patent Office
Prior art keywords
screen
stop
arc
resilience
region
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.)
Expired - Lifetime
Application number
EP87902102A
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German (de)
French (fr)
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EP0261189A1 (en
Inventor
Patrick Comtois
Luc Moreau
Daniel Alfred Nourry
Serge Paggi
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.)
Telemecanique SA
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La Telemecanique Electrique SA
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Publication date
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Publication of EP0261189A1 publication Critical patent/EP0261189A1/en
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Publication of EP0261189B1 publication Critical patent/EP0261189B1/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
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/60—Mechanical arrangements for preventing or damping vibration or shock
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32—Insulating body insertable between contacts

Definitions

  • the present invention relates to an electromechanical protection switch device with intensity threshold.
  • Such a switching device includes in an enclosure an interruptible electrical circuit which includes a magnetic trip device, at least one separable fixed contact and one movable contact, as well as an arc break screen interposable between the contacts during a separation of the latter caused by implementing the magnetic trip device in response to an overcurrent or a short circuit.
  • an interruptible electrical circuit which includes a magnetic trip device, at least one separable fixed contact and one movable contact, as well as an arc break screen interposable between the contacts during a separation of the latter caused by implementing the magnetic trip device in response to an overcurrent or a short circuit.
  • French patent 2,540,665 there is also described such an apparatus in which the screen has a front surface capable of being applied at the end of the race against a stop of the housing.
  • the arc cut-off screen is projected at high speed towards its stop by the plunger of the magnetic trip device. It reaches its stop with a very high speed, sometimes greater than 20 m / s, and with a sharp acceleration, likely to exceed 400g. This is particularly observed at the periphery of rotary cut-off screens.
  • the screen therefore risks either breaking the stop or breaking itself. If the screen and / or its stop are reinforced, the screen may rebound and allow the arc phenomenon to remain, which affects the operation of the device and its longevity. In addition, such a reinforcement leads to an additional bulk, which is unfortunate in the case of a modular device.
  • a first solution is provided by patent CH-429 879 according to which the screen is damped by a hydraulic brake, before arriving at low speed in contact with the stop. It is deformable and has two parts of different elasticities. This solution considerably lengthens the arc extinction time.
  • the object of the invention is to overcome these drawbacks and to prevent the continuation of the arc phenomenon as soon as it has been destabilized by the cut-off screen, using simple means, compact and efficient. It also aims to simply integrate these means into the housing of the device.
  • the screen moves freely in the air and the deformable stop, associated with the housing to receive the cut-off screen, is arranged so as not to immediately restore kinetic energy to it received, the delay in restoring this energy being determined so that the return of the screen does not occur until the arc has completely extinguished.
  • the stopper is attached to a part of the housing of the device and can advantageously come from molding with this part; in order to balance the reaction on the screen, two deformable stops are preferably provided opposite one another on two mutually assembled parts of the housing.
  • the deformable stop has at least two zones of different elasticity, the zone of higher elasticity receiving the impact of the screen and applying to the zone of lower elasticity, so as to ensure a gradual deceleration of the screen .
  • the stopper is preferably disposed between the periphery of the screen and the axis of rotation thereof, being close to the percussion center of the screen, so as to attenuate the reaction on the pivots of the 'screen.
  • the switching device 10 illustrated in FIG. 1 is a disconnector-circuit breaker comprising a box 11 and, in this box, an interruptible electrical circuit which comprises a magnetic trip device 12, as well as a fixed contact 13 and a movable contact 14.
  • L device 10 which could also be a circuit breaker or a contactor-circuit breaker, controls an external circuit capable of being connected to terminals 15, 16. The current flows, for example, from terminal 15 to terminal 16 by the movable contact 14, the fixed contact 13 and the trip device 12 via the connections indicated in dashes.
  • the trigger 12 acts on the movable contact 14 via a lock not shown, while a button or a lever 17 allows manual opening of the contacts or resetting.
  • a thermal trigger can be provided to act on the lock.
  • a cut-off screen 20 made of insulating material is rotatably mounted on pivots 19 of axis X-X in the housing 11 (see FIGS. 4 and 5).
  • Such a screen is described in French patent 2,563,939 and it can be actuated directly or indirectly by the magnetic trip device 12 to interpose between the fixed contacts 13 and movable 14 in order to contribute to stretching, cooling and destabilizing the arc of break. In the present embodiment, it is a direct drive by a tail 21 of the plunger 22 of the trigger 12.
  • the cut-off screen 20 normally occupies a rest position 20a (FIG. 1 and in dashed lines in FIG. 4) towards which it is returned by a torsion spring 23 and it can be propelled by the tail 21 of the magnetic trip device 12 towards a stop. elastically deformable 24.
  • the screen 20 reaches the stop in a contact-making position 20b (FIG. 4) with a speed of the order of 20 m / s and an acceleration greater than 200g; it crushes the stop until it comes to position 20c (figure 4).
  • the respective movements of the parts 21, 20 and 14 during an opening are indicated by the arrows f1, f2, f3 in FIG. 4.
  • the stop 24 consists of a relatively high elasticity zone formed by a thin annular partition 25 and a relatively low elasticity zone - or relatively rigid zone - formed by a solid stopper 26.
  • the partition 25 is attached to the foot of the stopper 26 so as to flex and crash on it to compress it as shown in Figure 4.
  • the areas 25, 26 could of course be arranged and arranged differently, to allow in all cases a gradual deceleration of the screen and a restitution to it of its percussion energy with a determined delay guaranteeing that the return of the screen under the combined effect of this energy and that of the return spring 23 will only take place once the arc is extinguished.
  • the deformable stop 24 is preferably disposed between the periphery 27 of the screen 20 and the axis X-X near the center of percussion of the screen in order to attenuate the reaction on the pivots 19.
  • the housing may consist of two mutually assemblable parts, the walls 11a, 11b of which are provided from the molding with respective elastically deformable stops 24a, 24b facing each other.
  • the deformable stops cooperate with edges 28, 29 of the screen, substantially parallel to the walls 11a, 11b constituting a part of the front surface of the screen.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

Electromechanical protection cutting apparatus comprising a magnetic tripping device and an arc-breaking screen which may be interleaved between at least one fixed contact and one movable contact during an opening caused by the tripping device. The stop (24) associated with the casing (11) of the apparatus to receive the breaking screen (12) is deformable and so arranged as not to restore immediately to the screen the kinetic energy received therefrom.

Description

La présente invention concerne un appareil interrupteur de protection électromécanique à seuil d'intensité.The present invention relates to an electromechanical protection switch device with intensity threshold.

Un tel appareil interrupteur est décrit dans le brevet français 2.563.939. Il comprend dans un boîtier un circuit électrique interruptible qui comporte un déclencheur magnétique, au moins un contact fixe et un contact mobile séparables, ainsi qu'un écran de coupure d'arc interposable entre les contacts lors d'une séparation de ceux-ci causée par la mise en oeuvre du déclencheur magnétique en réponse à une surintensité ou à un court-circuit. Dans le brevet français 2.540.665, il est également décrit un tel appareil dans lequel l'écran présente une surface frontale susceptible de venir s'appliquer en fin de course contre une butée du boîtier.Such a switching device is described in French patent 2,563,939. It includes in an enclosure an interruptible electrical circuit which includes a magnetic trip device, at least one separable fixed contact and one movable contact, as well as an arc break screen interposable between the contacts during a separation of the latter caused by implementing the magnetic trip device in response to an overcurrent or a short circuit. In French patent 2,540,665, there is also described such an apparatus in which the screen has a front surface capable of being applied at the end of the race against a stop of the housing.

Ces appareils interrupteurs fonctionnent de manière satisfaisante. Toutefois on constate que l'écran de coupure d'arc est projeté à grande vitesse vers sa butée par le plongeur du déclencheur magnétique. Il atteint sa butée avec une vitesse très élevée, parfois supérieure à 20 m/s, et avec une vive accélération, susceptible de dépasser 400g. Ceci est notamment observé à la périphérie d'écrans rotatifs de coupure.These switching devices operate satisfactorily. However, it can be seen that the arc cut-off screen is projected at high speed towards its stop by the plunger of the magnetic trip device. It reaches its stop with a very high speed, sometimes greater than 20 m / s, and with a sharp acceleration, likely to exceed 400g. This is particularly observed at the periphery of rotary cut-off screens.

L'écran risque donc, soit de casser la butée, soit de se rompre lui-même. Si l'on renforce l'écran et/ou sa butée, l'écran risque de rebondir et de laisser subsister le phénomène d'arc, ce qui nuit au fonctionnement de l'appareil et à sa longévité. De plus, un tel renforcement entraîne un surcroît d'encombrement, ce qui est fâcheux dans le cas d'un appareil modulaire.The screen therefore risks either breaking the stop or breaking itself. If the screen and / or its stop are reinforced, the screen may rebound and allow the arc phenomenon to remain, which affects the operation of the device and its longevity. In addition, such a reinforcement leads to an additional bulk, which is unfortunate in the case of a modular device.

Une première solution est fournie par le brevet CH-429 879 selon lequel l'écran est amorti par un frein hydraulique, avant d'arriver à faible vitesse en contact avec la butée. Celle-ci est déformable et comporte deux parties d'élasticités différentes. Cette solution allonge considérablement le temps d'extinction de l'arc.A first solution is provided by patent CH-429 879 according to which the screen is damped by a hydraulic brake, before arriving at low speed in contact with the stop. It is deformable and has two parts of different elasticities. This solution considerably lengthens the arc extinction time.

L'invention a pour but de pallier ces inconvénients et d'empêcher la poursuite du phénomène d'arc dès lors que celui-ci a été déstabilisé par l'écran de coupure, à l'aide de moyens simples, peu encombrants et efficaces. Elle vise également à intégrer simplement ces moyens au boîtier de l'appareil.The object of the invention is to overcome these drawbacks and to prevent the continuation of the arc phenomenon as soon as it has been destabilized by the cut-off screen, using simple means, compact and efficient. It also aims to simply integrate these means into the housing of the device.

Selon l'invention telle que définie dans la revendication 1, l'écran se déplace librement dans l'air et la butée déformable, associée au boîtier pour recevoir l'écran de coupure, est agencée pour ne pas lui restituer immédiatement l'énergie cinétique reçue, le retard de restitution de cette énergie étant déterminé pour que le retour de l'écran ne survienne qu'après l'extinction totale de l'arc.According to the invention as defined in claim 1, the screen moves freely in the air and the deformable stop, associated with the housing to receive the cut-off screen, is arranged so as not to immediately restore kinetic energy to it received, the delay in restoring this energy being determined so that the return of the screen does not occur until the arc has completely extinguished.

La butée se rattache à une partie du boîtier de l'appareil et peut avantageusement venir de moulage avec cette partie ; pour équilibrer la réaction sur l'écran, on prévoit de préférence deux butées déformables disposées en regard l'une de l'autre sur deux parties mutuellement assemblables du boîtier.The stopper is attached to a part of the housing of the device and can advantageously come from molding with this part; in order to balance the reaction on the screen, two deformable stops are preferably provided opposite one another on two mutually assembled parts of the housing.

La butée déformable possède au moins deux zones d'élasticité différente, la zone de plus forte élasticité recevant l'impact de l'écran et s'appliquant sur la zone de plus faible élasticité, de manière à assurer une décélération graduée de l'écran. Lorsque l'écran de coupure est du type rotatif, la butée est de préférence disposée entre la périphérie de l'écran et l'axe de rotation de celui-ci, en étant proche du centre de percussion de l'écran, de façon à atténuer la réaction sur les pivots de l'écran.The deformable stop has at least two zones of different elasticity, the zone of higher elasticity receiving the impact of the screen and applying to the zone of lower elasticity, so as to ensure a gradual deceleration of the screen . When the cut-off screen is rotary type, the stopper is preferably disposed between the periphery of the screen and the axis of rotation thereof, being close to the percussion center of the screen, so as to attenuate the reaction on the pivots of the 'screen.

D'autres particularités et avantages de l'invention apparaîtront de manière plus détaillée à la lumière de la description ci-après.Other features and advantages of the invention will appear in more detail in the light of the description below.

Aux dessins annexés :

  • La figure 1 montre schématiquement, en élévation, un appareil interrupteur muni d'un écran de coupure d'arc et d'une butée d'écran déformable conformément à l'invention ;
  • La figure 2 montre, à plus grande échelle, le détail A de la figure 1 ;
  • La figure 3 est une vue en coupe selon III-III de la figure 2 ;
  • La figure 4 représente, à plus grande échelle, l'écrasement de la butée par l'écran ;
  • La figure 5 est une coupe partielle selon le plan V-V de la figure 4.
In the accompanying drawings:
  • FIG. 1 schematically shows, in elevation, a switching device provided with an arc cut-off screen and with a deformable screen stop according to the invention;
  • Figure 2 shows, on a larger scale, the detail A of Figure 1;
  • Figure 3 is a sectional view along III-III of Figure 2;
  • Figure 4 shows, on a larger scale, the crushing of the stop by the screen;
  • FIG. 5 is a partial section along the plane VV of FIG. 4.

L'appareil interrupteur 10 illustré par la figure 1 est un sectionneur-disjoncteur comprenant un boîtier 11 et, dans ce boîtier, un circuit électrique interruptible qui comporte un déclencheur magnétique 12, ainsi qu'un contact fixe 13 et un contact mobile 14. L'appareil 10, qui pourrait également être un disjoncteur ou un contacteur-disjoncteur, contrôle un circuit extérieur susceptible d'être relié à des bornes 15, 16. Le courant s'écoule, par exemple, de la borne 15 à la borne 16 par le contact mobile 14, le contact fixe 13 et le déclencheur 12 via les liaisons indiquées en tirets. Le déclencheur 12 agit sur le contact mobile 14 via une serrure non représentée, tandis qu'un bouton ou une manette 17 permet d'effectuer une ouverture manuelle des contacts ou un réarmement. Il peut de plus être prévu un déclencheur thermique pour agir sur la serrure.The switching device 10 illustrated in FIG. 1 is a disconnector-circuit breaker comprising a box 11 and, in this box, an interruptible electrical circuit which comprises a magnetic trip device 12, as well as a fixed contact 13 and a movable contact 14. L device 10, which could also be a circuit breaker or a contactor-circuit breaker, controls an external circuit capable of being connected to terminals 15, 16. The current flows, for example, from terminal 15 to terminal 16 by the movable contact 14, the fixed contact 13 and the trip device 12 via the connections indicated in dashes. The trigger 12 acts on the movable contact 14 via a lock not shown, while a button or a lever 17 allows manual opening of the contacts or resetting. In addition, a thermal trigger can be provided to act on the lock.

Un écran de coupure 20 en matériau isolant est monté à rotation sur des pivots 19 d'axe X-X dans le boîtier 11 (voir figures 4 et 5). Un tel écran est décrit dans le brevet français 2.563.939 et il peut être actionné directement ou indirectement par le déclencheur magnétique 12 pour s'interposer entre les contacts fixe 13 et mobile 14 afin de contribuer à étirer, refroidir et déstabiliser l'arc de coupure. Dans le présent exemple de réalisation, il s'agit d'un entraînement direct par une queue 21 du plongeur 22 du déclencheur 12.A cut-off screen 20 made of insulating material is rotatably mounted on pivots 19 of axis X-X in the housing 11 (see FIGS. 4 and 5). Such a screen is described in French patent 2,563,939 and it can be actuated directly or indirectly by the magnetic trip device 12 to interpose between the fixed contacts 13 and movable 14 in order to contribute to stretching, cooling and destabilizing the arc of break. In the present embodiment, it is a direct drive by a tail 21 of the plunger 22 of the trigger 12.

L'écran de coupure 20 occupe normalement une position de repos 20a (figure 1 et en tirets sur la figure 4) vers laquelle il est rappelé par un ressort de torsion 23 et il est propulsable par la queue 21 du déclencheur magnétique 12 vers une butée élastiquement déformable 24. L'écran 20 atteint la butée en une position de prise de contact 20b (figure 4) avec une vitesse de l'ordre de 20 m/s et une accélération supérieure à 200g ; il écrase la butée jusqu'à venir à la position 20c (figure 4). Les mouvements respectifs des pièces 21, 20 et 14 lors d'une ouverture sont indiqués par les flèches f₁, f₂, f₃ sur la figure 4.The cut-off screen 20 normally occupies a rest position 20a (FIG. 1 and in dashed lines in FIG. 4) towards which it is returned by a torsion spring 23 and it can be propelled by the tail 21 of the magnetic trip device 12 towards a stop. elastically deformable 24. The screen 20 reaches the stop in a contact-making position 20b (FIG. 4) with a speed of the order of 20 m / s and an acceleration greater than 200g; it crushes the stop until it comes to position 20c (figure 4). The respective movements of the parts 21, 20 and 14 during an opening are indicated by the arrows f₁, f₂, f₃ in FIG. 4.

La butée 24 se compose d'une zone d'élasticité relativement élevée formée par une cloison annulaire mince 25 et d'une zone d'élasticité relativement faible - ou zone relativement rigide - formée par un butoir massif 26. Dans le présent exemple, la cloison 25 se rattache au pied du butoir 26 de manière à fléchir et s'écraser sur celui-ci pour le comprimer comme l'indique la figure 4. Les zones 25, 26 pourraient bien entendu être disposées et agencées différemment, afin de permettre dans tous les cas une décélération progressive de l'écran et une restitution à celui-ci de son énergie de percussion avec un retard déterminé garantissant que le retour de l'écran sous l'effet conjugué de cette énergie et de celle du ressort de rappel 23 ne s'effectuera qu'une fois l'arc éteint.The stop 24 consists of a relatively high elasticity zone formed by a thin annular partition 25 and a relatively low elasticity zone - or relatively rigid zone - formed by a solid stopper 26. In the present example, the partition 25 is attached to the foot of the stopper 26 so as to flex and crash on it to compress it as shown in Figure 4. The areas 25, 26 could of course be arranged and arranged differently, to allow in all cases a gradual deceleration of the screen and a restitution to it of its percussion energy with a determined delay guaranteeing that the return of the screen under the combined effect of this energy and that of the return spring 23 will only take place once the arc is extinguished.

La butée déformable 24 est de préférence disposée entre la périphérie 27 de l'écran 20 et l'axe X-X près du centre de percussion de l'écran afin d'atténuer la réaction sur les pivots 19.The deformable stop 24 is preferably disposed between the periphery 27 of the screen 20 and the axis X-X near the center of percussion of the screen in order to attenuate the reaction on the pivots 19.

Le boîtier peut se composer de deux parties mutuellement assemblables dont les parois 11a, 11b sont dotées dès le moulage de butées élastiquement déformables respectives 24a, 24b en regard l'une de l'autre. Les butées déformables coopèrent avec des arêtes 28, 29 de l'écran, sensiblement parallèles aux parois 11a, 11b constituant une partie de la surface frontale de l'écran.The housing may consist of two mutually assemblable parts, the walls 11a, 11b of which are provided from the molding with respective elastically deformable stops 24a, 24b facing each other. The deformable stops cooperate with edges 28, 29 of the screen, substantially parallel to the walls 11a, 11b constituting a part of the front surface of the screen.

Il va de soi que l'on peut apporter au mode de réalisation décrit des modifications. Ainsi l'invention s'applique aux appareils interrupteurs munis d'écrans de coupure d'arc à mouvement rectiligne. L'énergie de propulsion de l'écran peut, dans certains cas, être fournie par un mécanisme accumulateur réarmable mis en oeuvre par le déclencheur magnétique.It goes without saying that modifications can be made to the embodiment described. Thus the invention applies to switch devices provided with arc cut screens with rectilinear movement. The propulsion energy of the screen can, in certain cases, be supplied by a resettable accumulator mechanism implemented by the magnetic trip device.

Claims (5)

1. Protection switching apparatus with current threshold including in a case (11) a breakable electric circuit which includes a trip (12), at least one fixed contact (13) and one mobile contact (14) which are separable, as well as an arc breaking screen (20) insertable between the contacts during a separation thereof caused by the actuation of the trip, the screen having a front surface capable of being applied at the end of travel against a deformable stop (24) associated with the case, and having at least two regions of different resilience, characterized in that the arc breaking screen moves freely in the air so as to reach a high speed which may be greater than 20 m/s, striking during a first part of its arc breaking travel, when its speed is maximum, the region of highest resilience (25), where it undergoes a deceleration and, during a second part, after complete extinction of the arc, abutting on the region of lowest resilience (26) which causes rebouncing thereof while restoring the kinetic energy transferred to the stop.
2. Apparatus according to claim 1,
characterized in that the stop (24) is attached directly to a part of the case (11) and is integrally molded with this part.
3. Apparatus according to claim 2,
characterized in that two deformable stops (24a, 24b) are provided situated opposite each other on the walls (11a, 11b) of two mutually assemblable parts of the case (11).
4. Apparatus according to claim 1,
characterized in that the region of highest resilience (25) of the stop is formed by an annular dividing wall of small thickness, whereas the region of lowest resilience (26) of the stop is formed by a solid part, so that the annular dividing wall (25), when it is crushed by the screen (20), comes to bear on the solid part (26).
5. Apparatus according to claim 1,
characterized in that the arc breaking screen (20) is of the rotary type and the resiliently deformable stop (24) is disposed between the periphery of the screen and the axis of rotation thereof so as to be situated close to the striking center of the screen.
EP87902102A 1986-03-21 1987-03-23 Protection cutting apparatus provided with an arc breaking screen Expired - Lifetime EP0261189B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8604042 1986-03-21
FR8604042A FR2596196B1 (en) 1986-03-21 1986-03-21 PROTECTIVE SWITCHING DEVICE PROVIDED WITH AN ARC SHUT-OFF SCREEN

Publications (2)

Publication Number Publication Date
EP0261189A1 EP0261189A1 (en) 1988-03-30
EP0261189B1 true EP0261189B1 (en) 1991-10-30

Family

ID=9333363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87902102A Expired - Lifetime EP0261189B1 (en) 1986-03-21 1987-03-23 Protection cutting apparatus provided with an arc breaking screen

Country Status (6)

Country Link
US (1) US4849591A (en)
EP (1) EP0261189B1 (en)
JP (1) JPS63502941A (en)
DE (1) DE3774227D1 (en)
FR (1) FR2596196B1 (en)
WO (1) WO1987005745A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823790A1 (en) * 1988-07-14 1990-01-18 Asea Brown Boveri ELECTRICAL INSTALLATION DEVICE WITH CONTACT PARTITION
DE102006033766A1 (en) * 2006-01-25 2007-07-26 Abb Technology Ag Contact system for short-circuiting device in medium-voltage or high-voltage switchboard plant, has one stationary contact piece each per phase, connected to mains voltage, and one mobile contact piece each per phase
CN108987140B (en) * 2017-06-01 2024-04-02 泰科电子(深圳)有限公司 Electrical contact system
CN108987139B (en) * 2017-06-01 2024-02-02 泰科电子(深圳)有限公司 Electrical contact system
CN108987141B (en) * 2017-06-05 2023-04-07 泰科电子(深圳)有限公司 Electrical contact system
KR102026642B1 (en) * 2018-05-11 2019-09-30 엘에스산전 주식회사 Molded Case Circuit Breaker
US11948762B2 (en) * 2021-04-30 2024-04-02 Astronics Advanced Electronic Systems Corp. High voltage high current arc extinguishing contactor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE635001A (en) * 1962-07-16
US3576967A (en) * 1969-04-04 1971-05-04 S & C Electric Co Switch construction with load break device having one or more movable slats with heat spacers
FR2540666B1 (en) * 1983-02-04 1986-10-10 Telemecanique Electrique LIMIT SWITCH
FR2561816B1 (en) * 1984-03-20 1988-06-10 Telemecanique Electrique COMBINATION FOR LOADING BREAKDOWN AND VISIBLE DISCONNECTION OF AN ELECTRICAL CIRCUIT
FR2563939B1 (en) * 1984-05-03 1988-03-18 Telemecanique Electrique SWITCHING DEVICE WITH ARC SHUTDOWN SCREEN
FR2573914B1 (en) * 1984-11-26 1987-02-06 Telemecanique Electrique ELECTRICAL SWITCH WITH SCREEN
FR2573913B1 (en) * 1984-11-26 1987-01-09 Telemecanique Electrique ELECTRICAL SWITCH WITH SCREEN

Also Published As

Publication number Publication date
EP0261189A1 (en) 1988-03-30
FR2596196A1 (en) 1987-09-25
FR2596196B1 (en) 1988-08-26
US4849591A (en) 1989-07-18
DE3774227D1 (en) 1991-12-05
WO1987005745A1 (en) 1987-09-24
JPS63502941A (en) 1988-10-27

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