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EP0794547A1 - Electric circuit breaker with electromagnetic actuator and actuating mechanism - Google Patents

Electric circuit breaker with electromagnetic actuator and actuating mechanism Download PDF

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Publication number
EP0794547A1
EP0794547A1 EP97410022A EP97410022A EP0794547A1 EP 0794547 A1 EP0794547 A1 EP 0794547A1 EP 97410022 A EP97410022 A EP 97410022A EP 97410022 A EP97410022 A EP 97410022A EP 0794547 A1 EP0794547 A1 EP 0794547A1
Authority
EP
European Patent Office
Prior art keywords
pallet
circuit breaker
breaker according
central section
pole pieces
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Withdrawn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
EP97410022A
Other languages
German (de)
French (fr)
Inventor
Jean-Claude Ramirez
Philippe Delcambre
Jean Barral Baron
Jean-Bruno Comino
Didier Lebouc
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 Industries SAS
Original Assignee
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 Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0794547A1 publication Critical patent/EP0794547A1/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Withdrawn legal-status Critical Current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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism

Definitions

  • the present invention relates to an electric circuit breaker comprising a control mechanism, an electromagnetic actuator, separable contacts associated with a breaking chamber, said actuator having a magnetic circuit comprising in particular a core on which is mounted an excitation means, a first air gap in which an arm of a movable contact extends to occupy a rest position in the closed state of the separable contacts and an active position of separation of these contacts when the current intensity exceeds a predetermined threshold, a pivoting pallet cooperating with pole faces of the magnetic circuit to close a second air gap located opposite said first air gap and a striker associated with the pallet and arranged to act on the arm of the movable contact, after attraction of the pallet.
  • Electric circuit breakers of this type are already known in which, when there is a flow, a pivoting pallet is attracted against a polar face of the magnetic circuit, this pallet being associated with a striker which repels a movable contact and causes the unlocking of the control mechanism.
  • a pivoting pallet is attracted against a polar face of the magnetic circuit, this pallet being associated with a striker which repels a movable contact and causes the unlocking of the control mechanism.
  • the air gap is important in the initial phase, this air gap decreasing during the movement of the pallet.
  • the object of the invention is to provide an electrical circuit breaker of the type mentioned in the preamble, the paddle of which can be actuated quickly by a relatively small flow.
  • circuit breaker according to the invention characterized in that said pivoting pallet has an enveloping shape which extends laterally over at least part of the pole pieces.
  • said pallet comprises a central section and two wings arranged symmetrically on either side of the central section, these wings being folded laterally relative to the latter.
  • this device comprises a single piece of copper which constitutes both a contact area, a half-turn of the magnetic circuit of the electromagnetic actuator, a fixed contact support and an upper arc horn of the breaking chamber. .
  • the circuit breaker 10 of the type with molded insulating housing shown comprises a control mechanism 11, a manual control handle 12, an actuator electromagnetic 13 and separable contacts 14 and 15 associated with a breaking chamber 16.
  • the electromagnetic actuator 13 comprises a magnetic circuit 17 comprising a core 18 on which is mounted an excitation conductor 19 in the form of a half-turn, a first air gap 20 (see FIG. 2) in which extends an arm 21 carrying the movable contact 15 which occupies a rest position in the closed state of the separable contacts 14, 15 and an active position of separation of these contacts when the current intensity exceeds a predetermined threshold, a pivoting pallet 22 cooperating with polar faces of the magnetic circuit 17 to form a second air gap 23 located opposite the first air gap 20.
  • FIG. 2 represents a detailed perspective view which more specifically illustrates the magnetic circuit 17.
  • a contact pad 24 is connected to a half-turn 25 of the coil which extends, as shown in FIG. 1, into the chamber cutting 16 to form an upper arc horn 26 of this chamber.
  • the pivoting pallet 22 has an enveloping shape, that is to say that it has a slightly curved central section 27 and two wings 28 arranged symmetrically apart. and other of the central section 27, these wings being folded laterally relative to the central section.
  • the central section 27 and the wings 28 of the pallet 22 are substantially parallel to the pole pieces 29 and 30 of the magnetic circuit 17. In their front part, these pole pieces have a curved shape or consist of two segments folded together forming a angle of the order of 150 to 180 °.
  • the central section 27 of the pallet has this same curved or folded shape, so that the pallet 22 is, in its central section 27, substantially parallel to the front part of the pole pieces 29 and 30.
  • the wings 28 form with respect to the central section 27 of the pallet 22 of angles substantially between 90 ° and 150 °, and preferably close to 120 °.
  • the distance a between the central section 27 of the latter and the front part of the pole pieces 29, 30 is greater than the distance e between the wings 28 and the lateral parts of the pole pieces. Therefore, the reluctance to overcome is low since this reluctance depends on the distance e which is less than the distance a .
  • FIG. 4 illustrates the rest position of the pallet 22 and its final position, after pivoting, designated by the reference 22 '.
  • the latter is associated with a spring 40 whose shape is adjustable.
  • the air gap that is to say the distance a defined with reference to FIG. 3, is adjustable by means of a screw 41 (see FIG. 1).
  • the half-turn 25 of the magnetic circuit 17 of the electromagnetic actuator 13, the contact pad 24, the support of the fixed contact 14 and the upper arcing horn 26 of the breaking chamber 16 consist of a single piece of copper.
  • the excitation conductor 19 is constituted by a coil surrounding the core 18.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)

Abstract

The circuit breaker includes a first air gap (20) in a magnetic circuit (17) into which extends the arm of a moving contact in the rest position. The piece (22) closes a second air gap (23) opposite the first and a striker acts on the moving contact after the attraction of the piece when a threshold current is exceeded. The piece (22) comprises a central part with two side parts arranged symmetrically on either side. The central part is similar to and curved in parallel to the two pole pieces and comprises two slightly folded segments. The side parts are approximately parallel to the sides of the poles.

Description

La présente invention concerne un disjoncteur électrique comportant un mécanisme de commande, un actionneur électromagnétique, des contacts séparables associés à une chambre de coupure, ledit actionneur ayant un circuit magnétique comprenant notamment un noyau sur lequel est montée un moyen d'excitation, un premier entrefer dans lequel s'étend un bras d'un contact mobile pour occuper une position de repos dans l'état de fermeture des contacts séparables et une position active de séparation de ces contacts lorsque l'intensité du courant dépasse un seuil prédéterminé, une palette pivotante coopérant avec des faces polaires du circuit magnétique pour fermer un deuxième entrefer situé à l'opposé dudit premier entrefer et un percuteur associé à la palette et agencé pour agir sur le bras du contact mobile, après attraction de la palette.The present invention relates to an electric circuit breaker comprising a control mechanism, an electromagnetic actuator, separable contacts associated with a breaking chamber, said actuator having a magnetic circuit comprising in particular a core on which is mounted an excitation means, a first air gap in which an arm of a movable contact extends to occupy a rest position in the closed state of the separable contacts and an active position of separation of these contacts when the current intensity exceeds a predetermined threshold, a pivoting pallet cooperating with pole faces of the magnetic circuit to close a second air gap located opposite said first air gap and a striker associated with the pallet and arranged to act on the arm of the movable contact, after attraction of the pallet.

On connaît déjà des disjoncteurs électriques de ce type dans lesquels, lorsqu'il y a un flux, une palette pivotante est attirée contre une face polaire du circuit magnétique, cette palette étant associée à un percuteur qui repousse un contact mobile et provoque le déverrouillage du mécanisme de commande. Un tel dispositif est décrit dans le document EP-A-0 693 765.Electric circuit breakers of this type are already known in which, when there is a flow, a pivoting pallet is attracted against a polar face of the magnetic circuit, this pallet being associated with a striker which repels a movable contact and causes the unlocking of the control mechanism. Such a device is described in document EP-A-0 693 765.

Etant donné que la palette a généralement une forme plane, l'entrefer est important dans la phase initiale, cet entrefer décroissant au cours du déplacement de la palette. Dans cette première phase, il faut vaincre une réluctance initiale très importante et, par conséquent, il faut un flux élevé pour mettre la palette en mouvement.Since the pallet generally has a flat shape, the air gap is important in the initial phase, this air gap decreasing during the movement of the pallet. In this first phase, you have to overcome a very large initial reluctance and, therefore, you need a high flux to set the pallet in motion.

Ce fait constitue un inconvénient auquel l'invention se propose de remédier.This fact constitutes a drawback which the invention proposes to remedy.

L'objet de l'invention consiste à réaliser un disjoncteur électrique du type mentionné en préambule, dont la palette peut être actionnée rapidement par un flux relativement faible.The object of the invention is to provide an electrical circuit breaker of the type mentioned in the preamble, the paddle of which can be actuated quickly by a relatively small flow.

Ce but est atteint par le disjoncteur selon l'invention, caractérisé en ce que ladite palette pivotante a une forme enveloppante qui s'étend latéralement sur au moins une partie des pièces polaires.This object is achieved by the circuit breaker according to the invention, characterized in that said pivoting pallet has an enveloping shape which extends laterally over at least part of the pole pieces.

Selon un mode de réalisation préféré, ladite palette comporte une section centrale et deux ailes disposées symétriquement de part et d'autre de la section centrale, ces ailes étant repliées latéralement par rapport à cette dernière.According to a preferred embodiment, said pallet comprises a central section and two wings arranged symmetrically on either side of the central section, these wings being folded laterally relative to the latter.

Avantageusement, ce dispositif comporte une pièce monobloc en cuivre qui constitue à la fois une plage de contact, une demi-spire du circuit magnétique de l'actionneur électromagnétique, un support de contact fixe et une corne d'arc supérieur de la chambre de coupure.Advantageously, this device comprises a single piece of copper which constitutes both a contact area, a half-turn of the magnetic circuit of the electromagnetic actuator, a fixed contact support and an upper arc horn of the breaking chamber. .

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description d'une forme de réalisation préférée, donnée à titre d'exemple non limitatif et représentée par les dessins annexés dans lesquels :

  • La figure 1 est une vue schématique en coupe d'un disjoncteur selon l'invention,
  • La figure 2 est une vue de détail en perspective représentant le circuit magnétique et la palette pivotante,
  • La figure 3 représente une vue coupe transversale du circuit magnétique et de la palette pivotante qui lui est associée, et
  • La figure 4 représente une vue en élévation du circuit magnétique et de la palette pivotante dans ses deux positions extrêmes.
  • La figure 5 est une vue identique à la figure 1 d'une variante de réalisation.
Other characteristics and advantages of the invention will emerge more clearly from the description of a preferred embodiment, given by way of nonlimiting example and represented by the appended drawings in which:
  • FIG. 1 is a schematic sectional view of a circuit breaker according to the invention,
  • FIG. 2 is a detailed perspective view showing the magnetic circuit and the pivoting pallet,
  • FIG. 3 represents a cross-sectional view of the magnetic circuit and of the pivoting pallet associated therewith, and
  • FIG. 4 represents an elevation view of the magnetic circuit and of the pivoting pallet in its two extreme positions.
  • Figure 5 is a view identical to Figure 1 of an alternative embodiment.

En référence aux figures et en particulier à la figure 1, le disjoncteur 10 du type à boîtier isolant moulé représenté comporte un mécanisme de commande 11, une manette de commande manuelle 12, un actionneur électromagnétique 13 et des contacts séparables 14 et 15 associés à une chambre de coupure 16. L'actionneur électromagnétique 13 comporte un circuit magnétique 17 comprenant un noyau 18 sur lequel est monté un conducteur d'excitation 19 en forme de demi-spire, un premier entrefer 20 (voir figure 2) dans lequel s'étend un bras 21 portant le contact mobile 15 qui occupe une position de repos dans l'état de fermeture des contacts séparables 14, 15 et une position active de séparation de ces contacts lorsque l'intensité du courant dépasse un seuil prédéterminé, une palette pivotante 22 coopérant avec des faces polaires du circuit magnétique 17 pour former un deuxième entrefer 23 situé à l'opposé du premier entrefer 20. Un percuteur 9 est associé à la palette pivotante 22 et est agencé pour agir sur le bras 21 du contact mobile 15 au moment où la palette pivote sous l'effet de l'attraction exercée par les pièces polaires du circuit magnétique.
La figure 2 représente une vue de détail en perspective qui illustre plus spécifiquement le circuit magnétique 17. Une plage de contact 24 est connectée à une demi-spire 25 de la bobine qui se prolonge, comme le montre la figure 1, jusque dans la chambre de coupure 16 pour former une corne d'arc supérieur 26 de cette chambre.
On constate sur cette figure et sur les deux vues des figures 3 et 4 que la palette pivotante 22 a une forme enveloppante, c'est-à-dire qu'elle comporte une section centrale 27 légèrement incurvée et deux ailes 28 disposées symétriquement de part et d'autre de la section centrale 27, ces ailes étant repliées latéralement par rapport à la section centrale. La section centrale 27 et les ailes 28 de la palette 22 sont sensiblement parallèles aux pièces polaires 29 et 30 du circuit magnétique 17. Dans leur partie frontale, ces pièces polaires ont une forme incurvée ou sont constituées de deux segments pliés en formant entre eux un angle de l'ordre de 150 à 180°. La section centrale 27 de la palette présente cette même forme incurvée ou pliée, de telle manière que la palette 22 est, dans sa section centrale 27, sensiblement parallèle à la partie frontale des pièces polaires 29 et 30. Les ailes 28 forment par rapport à la section centrale 27 de la palette 22 des angles sensiblement compris entre 90° et 150°, et de préférence voisins de 120°.
En l'absence de flux magnétique exerçant une forme d'attraction sur la palette 22, la distance a entre la section centrale 27 de cette dernière et la partie frontale des pièces polaires 29, 30 est supérieure à la distance e entre les ailes 28 et les parties latérales des pièces polaires. De ce fait, la réluctance à vaincre est faible puisque cette réluctance dépend de la distance e qui est inférieure à la distance a.Referring to the figures and in particular to Figure 1, the circuit breaker 10 of the type with molded insulating housing shown comprises a control mechanism 11, a manual control handle 12, an actuator electromagnetic 13 and separable contacts 14 and 15 associated with a breaking chamber 16. The electromagnetic actuator 13 comprises a magnetic circuit 17 comprising a core 18 on which is mounted an excitation conductor 19 in the form of a half-turn, a first air gap 20 (see FIG. 2) in which extends an arm 21 carrying the movable contact 15 which occupies a rest position in the closed state of the separable contacts 14, 15 and an active position of separation of these contacts when the current intensity exceeds a predetermined threshold, a pivoting pallet 22 cooperating with polar faces of the magnetic circuit 17 to form a second air gap 23 located opposite the first air gap 20. A striker 9 is associated with the pivoting pallet 22 and is arranged to act on the arm 21 of the movable contact 15 when the pallet pivots under the effect of the attraction exerted by the pole pieces of the magnetic circuit.
FIG. 2 represents a detailed perspective view which more specifically illustrates the magnetic circuit 17. A contact pad 24 is connected to a half-turn 25 of the coil which extends, as shown in FIG. 1, into the chamber cutting 16 to form an upper arc horn 26 of this chamber.
It can be seen in this figure and in the two views of FIGS. 3 and 4 that the pivoting pallet 22 has an enveloping shape, that is to say that it has a slightly curved central section 27 and two wings 28 arranged symmetrically apart. and other of the central section 27, these wings being folded laterally relative to the central section. The central section 27 and the wings 28 of the pallet 22 are substantially parallel to the pole pieces 29 and 30 of the magnetic circuit 17. In their front part, these pole pieces have a curved shape or consist of two segments folded together forming a angle of the order of 150 to 180 °. The central section 27 of the pallet has this same curved or folded shape, so that the pallet 22 is, in its central section 27, substantially parallel to the front part of the pole pieces 29 and 30. The wings 28 form with respect to the central section 27 of the pallet 22 of angles substantially between 90 ° and 150 °, and preferably close to 120 °.
In the absence of magnetic flux exerting a form of attraction on the pallet 22, the distance a between the central section 27 of the latter and the front part of the pole pieces 29, 30 is greater than the distance e between the wings 28 and the lateral parts of the pole pieces. Therefore, the reluctance to overcome is low since this reluctance depends on the distance e which is less than the distance a .

La figure 4 illustre la position de repos de la palette 22 et sa position finale, après pivotement, désignée par la référence 22'.FIG. 4 illustrates the rest position of the pallet 22 and its final position, after pivoting, designated by the reference 22 '.

Pour régler le seuil d'attraction de la palette 22, cette dernière est associée à un ressort 40 dont la forme est réglable. En outre, l'entrefer, c'est-à-dire la distance a définie en référence à la figure 3 est réglable au moyen d'une vis 41 (voir figure 1).To adjust the attraction threshold of the pallet 22, the latter is associated with a spring 40 whose shape is adjustable. In addition, the air gap, that is to say the distance a defined with reference to FIG. 3, is adjustable by means of a screw 41 (see FIG. 1).

Par ailleurs, dans la construction représentée, la demi-spire 25 du circuit magnétique 17 de l'actionneur électromagnétique 13, la plage de contact 24, le support du contact fixe 14 et la corne d'arc supérieur 26 de la chambre de coupure 16 sont constitués d'une pièce monobloc en cuivre.Furthermore, in the construction shown, the half-turn 25 of the magnetic circuit 17 of the electromagnetic actuator 13, the contact pad 24, the support of the fixed contact 14 and the upper arcing horn 26 of the breaking chamber 16 consist of a single piece of copper.

En référence à la figure 5 concernant un disjoncteur à bas calibres, le conducteur 19 d'excitation est constitué par une bobine entourant le noyau 18.With reference to FIG. 5 concerning a circuit breaker with low ratings, the excitation conductor 19 is constituted by a coil surrounding the core 18.

Claims (10)

Disjoncteur électrique comportant un mécanisme (11) de commande des contacts séparables (14, 15), un actionneur électromagnétique (13) ayant un circuit magnétique (17) comprenant notamment un noyau (18) sur lequel est montée un moyen d'excitation (19), un premier entrefer (20) dans lequel s'étend un bras (21) d'un contact mobile (15) pour occuper une position de repos dans l'état de fermeture des contacts séparables (14, 15) et une position active de séparation de ces contacts lorsque l'intensité du courant dépasse un seuil prédéterminé, une palette pivotante (22) coopérant avec des faces polaires du circuit magnétique (17) pour fermer un deuxième entrefer (23) situé à l'opposé dudit premier entrefer (20) et un percuteur (9) associé à la palette et agencé pour agir sur le bras (21) du contact mobile, après attraction de la palette, caractérisé en ce que ladite palette pivotante (22) a une forme enveloppante qui s'étend latéralement sur au moins une partie des pièces polaires (29, 30).Electric circuit breaker comprising a mechanism (11) for controlling the separable contacts (14, 15), an electromagnetic actuator (13) having a magnetic circuit (17) notably comprising a core (18) on which is mounted an excitation means (19 ), a first air gap (20) in which extends an arm (21) of a movable contact (15) to occupy a rest position in the closed state of the separable contacts (14, 15) and an active position for separating these contacts when the intensity of the current exceeds a predetermined threshold, a pivoting pallet (22) cooperating with polar faces of the magnetic circuit (17) to close a second air gap (23) located opposite said first air gap ( 20) and a striker (9) associated with the pallet and arranged to act on the arm (21) of the movable contact, after attraction of the pallet, characterized in that said pivoting pallet (22) has an enveloping shape which extends laterally on at least part pole pieces (29, 30). Disjoncteur selon la revendication 1, caractérisé en ce que ladite palette comporte une section centrale (27) et deux ailes (28) disposées symétriquement de part et d'autre de la section centrale, ces ailes étant repliées latéralement par rapport à cette dernière.Circuit breaker according to claim 1, characterized in that said pallet comprises a central section (27) and two wings (28) arranged symmetrically on either side of the central section, these wings being folded laterally relative to the latter. Disjoncteur selon la revendication 2, caractérisé en ce que la section centrale (27) présente une forme sensiblement similaire aux pièces polaires (29, 30) disposées en regard.Circuit breaker according to claim 2, characterized in that the central section (27) has a shape substantially similar to the pole pieces (29, 30) arranged opposite. Disjoncteur selon la revendication 2, caractérisé en ce que les ailes (28) sont sensiblement parallèles à une partie latérale des pièces polaires (29, 30) du circuit magnétique.Circuit breaker according to claim 2, characterized in that the wings (28) are substantially parallel to a lateral part of the pole pieces (29, 30) of the magnetic circuit. Disjoncteur selon la revendication 2, caractérisé en ce que la section centrale (27) de la palette est incurvée parallèlement à une partie frontale des pièces polaires (29, 30).Circuit breaker according to claim 2, characterized in that the central section (27) of the pallet is curved parallel to a front part of the pole pieces (29, 30). Disjoncteur selon la revendication 2, caractérisé en ce que la section centrale (27) de la palette est constituée de deux segments pliés formant entre eux un angle sensiblement compris entre 150 et 180°.Circuit breaker according to claim 2, characterized in that the central section (27) of the pallet consists of two folded segments forming between them an angle substantially between 150 and 180 °. Disjoncteur selon la revendication 2, caractérisé en ce que les ailes (28) forment par rapport à la section centrale (27) de la palette (22) des angles sensiblement compris entre 90 et 150° et de préférence voisins de 120°.Circuit breaker according to claim 2, characterized in that the wings (28) form with respect to the central section (27) of the pallet (22) angles substantially between 90 and 150 ° and preferably close to 120 °. Disjoncteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la distance a entre la partie frontale des pièces polaires (29, 30) et la section centrale (27) de la palette (22) est supérieure à la distance e entre les parties latérales des pièces polaires et les ailes (28) de la palette (22), lorsque cette palette est au repos en l'absence de flux magnétique.Circuit breaker according to any one of the preceding claims, characterized in that the distance a between the front part of the pole pieces (29, 30) and the central section (27) of the pallet (22) is greater than the distance e between the lateral parts of the pole pieces and the wings (28) of the pallet (22), when this pallet is at rest in the absence of magnetic flux. Disjoncteur selon la revendication 1, caractérisé en ce que la palette (22) est associée à des moyens de réglage du seuil d'attraction.Circuit breaker according to claim 1, characterized in that the pallet (22) is associated with means for adjusting the attraction threshold. Disjoncteur selon la revendication 1, caractérisé en ce qu'il comporte une pièce monobloc en cuivre qui constitue à la fois une plage de contact (24), une demi-spire (25) du circuit magnétique (17) de l'actionneur électromagnétique (13), un support de contact fixe (14) et une corne d'arc supérieur (26) de la chambre de coupure (16).Circuit breaker according to claim 1, characterized in that it comprises a single piece of copper which constitutes both a contact pad (24), a half-turn (25) of the magnetic circuit (17) of the electromagnetic actuator ( 13), a fixed contact support (14) and an upper arc horn (26) of the breaking chamber (16).
EP97410022A 1996-03-08 1997-02-25 Electric circuit breaker with electromagnetic actuator and actuating mechanism Withdrawn EP0794547A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9603181 1996-03-08
FR9603181A FR2745949B1 (en) 1996-03-08 1996-03-08 ELECTRIC CIRCUIT BREAKER WITH ELECTROMAGNETIC ACTUATOR AND CONTROL MECHANISM

Publications (1)

Publication Number Publication Date
EP0794547A1 true EP0794547A1 (en) 1997-09-10

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EP97410022A Withdrawn EP0794547A1 (en) 1996-03-08 1997-02-25 Electric circuit breaker with electromagnetic actuator and actuating mechanism

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FR (1) FR2745949B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1376639A1 (en) * 2002-06-17 2004-01-02 Hager Electro S.A. Electromagnetic trip device with a linear plunger movement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE572086C (en) * 1931-06-16 1933-03-10 Aeg Magnet with sliding armature, especially for overcurrent release of electrical switches
US4706054A (en) * 1986-09-15 1987-11-10 General Electric Company Thermal magnetic trip unit for molded case circuit breakers
US4963848A (en) * 1989-03-31 1990-10-16 Square D Company Non-jamming magnetic trip structure
EP0693765A1 (en) * 1994-07-18 1996-01-24 Schneider Electric Sa Electromagnetic actuator for a low tension circuit breaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE572086C (en) * 1931-06-16 1933-03-10 Aeg Magnet with sliding armature, especially for overcurrent release of electrical switches
US4706054A (en) * 1986-09-15 1987-11-10 General Electric Company Thermal magnetic trip unit for molded case circuit breakers
US4963848A (en) * 1989-03-31 1990-10-16 Square D Company Non-jamming magnetic trip structure
EP0693765A1 (en) * 1994-07-18 1996-01-24 Schneider Electric Sa Electromagnetic actuator for a low tension circuit breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1376639A1 (en) * 2002-06-17 2004-01-02 Hager Electro S.A. Electromagnetic trip device with a linear plunger movement

Also Published As

Publication number Publication date
FR2745949B1 (en) 1998-04-17
FR2745949A1 (en) 1997-09-12

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