EP1850361B1 - Fast overcurrent actuator, and its application - Google Patents

Fast overcurrent actuator, and its application Download PDF

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Publication number
EP1850361B1
EP1850361B1 EP07290273A EP07290273A EP1850361B1 EP 1850361 B1 EP1850361 B1 EP 1850361B1 EP 07290273 A EP07290273 A EP 07290273A EP 07290273 A EP07290273 A EP 07290273A EP 1850361 B1 EP1850361 B1 EP 1850361B1
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EP
European Patent Office
Prior art keywords
movable part
actuator
loops
transducer
terminals
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.)
Not-in-force
Application number
EP07290273A
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German (de)
French (fr)
Other versions
EP1850361A1 (en
Inventor
Alain Fontanet
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.)
Legrand SNC
Legrand France SA
Original Assignee
Legrand SNC
Legrand France SA
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 Legrand SNC, Legrand France SA filed Critical Legrand SNC
Priority to PL07290273T priority Critical patent/PL1850361T3/en
Publication of EP1850361A1 publication Critical patent/EP1850361A1/en
Application granted granted Critical
Publication of EP1850361B1 publication Critical patent/EP1850361B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening
    • H01H77/107—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening characterised by the blow-off force generating means, e.g. current loops
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge

Definitions

  • the invention relates generally to the field of electrical protection.
  • the invention relates, in a first aspect, an actuator sensitive to electrical overcurrent and comprising two electrical pads spaced apart from each other, a movable and conductive part, and an electromechanical transducer, the transducer moving the workpiece mobile, depending on an electric current applied to this transducer and against at least one restoring force applied to the moving part, between a rest position in which the moving part is physically in contact with each of the two pads and a release position in which this moving part is distant from each of the electrical pads, the transducer being provided with two connection terminals and comprising first and second loops disposed on either side of the movable part and electrically connected to each other.
  • each loop producing, in a zone of influence and under the effect of the electrical carrier flowing between said terminals, a magnetic field having a main direction, and the movable part being electrically disposed between said terminals and extending in the zone of influence of each loop, transversely to the main direction of the magnetic field produced by this loop.
  • a device of this type is for example known to those skilled in the art by the document of DE 196 29 867 .
  • Current actuators can be of several types, and generally consist of either electromagnets or electrodynamic pots.
  • Electromagnet actuators have the disadvantage of having time constants of the order of one millisecond and are therefore relatively slow, in particular when they are of the variable reluctance type, the electrodynamic pot actuators having in turn the disadvantage of offering only very small races.
  • the known actuators have a relatively complex structure.
  • the purpose of the invention is to propose an actuator free from at least one of the defects noted on the existing actuators.
  • the actuator of the invention is essentially characterized in that the first and second loops together form an induction coil producing, in a single area of influence, a single magnetic field exerting on the moving part a single Laplace force acting against a single restoring force.
  • the moving part, in the actuator of the invention is arranged to be subjected only to a Laplace force, for example compensated in normal regime by a restoring force exerted by a spring, and not two Laplace forces acting in opposite directions on its ends and compensated by an elastic return torque.
  • the first and second loops which are for example identical, may comprise only one turn each.
  • Each of these first and second loops is constituted for example by a metal blank cut and folded, the moving part may also take the form of a bar.
  • the actuator of the invention is very fast and ideally applicable to the realization of a quick release for an active safety device.
  • the invention relates to an actuator (or actuator) sensitive to an electrical overcurrent, of the type comprising two electrical pads 11 and 12 spaced from one another, a movable conductive part 2, and an electromechanical transducer 3.
  • the conductive part 2 is movable between a rest position in which it is physically in contact with each of the pads 11 and 12, and a release position in which the movable part 2 is distant from each of the pads.
  • the function of the transducer 3 is to move the moving part 2, as a function of an electric current which is applied on its terminals 31 and 32, against a restoring force applied to the moving part 2, this force of recall may be constituted by the force of gravity and / or by an elastic force exerted by a spring (not shown).
  • the transducer 3 is formed by an electromagnetic induction coil, adapted to produce, under the effect of the electric current flowing between its terminals 31 and 32, a magnetic field having a main direction H in a zone of Z influence.
  • the moving part 2 is electrically disposed between the terminals 31 and 32 of the coil 3 and extends in the zone of influence Z of this coil, transversely to the main direction H of the magnetic field.
  • the moving part 2 is both immersed in the magnetic field produced by the coil 3 and traversed by the same current as this coil, so that it is subjected to Laplace forces.
  • the actuator thus formed has an extremely low time constant.
  • the induction coil 3 consists of two identical loops 3A and 3B, arranged on either side of the moving part 2, electrically connected to each other via this moving part 2, and formed preferably each by a single turn.
  • the loops 3A and 3B are advantageously supplied with current by a charged capacitor connected to the coil 3 by means of a static relay allowing a fast discharge of the electrical energy stored in the capacitor.
  • the actuator of the invention is not sensitive to the direction of the current insofar as the forces involved are proportional to the square of the intensity of the current.
  • the current peaks can be large, for example of the order of 1000A, which causes significant Laplace forces on the moving part 2, which is printed an extremely fast movement.
  • each of the loops 3A and 3B is advantageously constituted by a metal blank cut and folded.
  • the actuator of the invention finds a privileged application in the realization of a quick release for an active safety device, in particular for a circuit breaker provided with a power supply and capable of using the energy used in this actuator to open the main circuit of this circuit breaker in case of emergency, typically in the event of a short circuit.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Lock And Its Accessories (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The actuator has an electromechanical transducer (3) formed by an electromagnetic induction coil with connection terminals (31, 32). The transducer generates a magnetic field having a main direction, in an influence zone, under the effect of an electric current circulating between the terminals. A mobile conductive bar (2) is electrically placed between the terminals and extends in the zone, transversal to the direction. The transducer has loops (3A, 3B) that are placed on the bar and exert a Laplace force, oriented towards a direction, on the bar, to move the bar away from studs (11, 12).

Description

L'invention concerne, de façon générale, le domaine de la protection électrique.The invention relates generally to the field of electrical protection.

Plus précisément, l'invention concerne, selon un premier aspect, un actionneur sensible à une surintensité électrique et comprenant deux plots électriques espacés l'un de l'autre, une pièce mobile et conductrice, et un transducteur électromécanique, le transducteur déplaçant la pièce mobile, en fonction d'un courant électrique appliqué à ce transducteur et à l'encontre d'au moins une force de rappel appliquée à la pièce mobile, entre une position de repos dans laquelle la pièce mobile est physiquement en contact avec chacun des deux plots et une position de déclenchement dans laquelle cette pièce mobile est distante de chacun des plots électriques, le transducteur étant doté de deux bornes de branchement et comprenant des première et seconde boucles disposées de part et d'autre de la pièce mobile et électriquement reliées l'une à l'autre par l'intermédiaire de cette pièce mobile, chaque boucle produisant, dans une zone d'influence et sous l'effet du courant électrique circulant entre lesdites bornes, un champ magnétique présentant une direction principale, et la pièce mobile étant disposée électriquement entre lesdites bornes et s'étendant dans la zone d'influence de chaque boucle, transversalement à la direction principale du champ magnétique produit par cette boucle.More specifically, the invention relates, in a first aspect, an actuator sensitive to electrical overcurrent and comprising two electrical pads spaced apart from each other, a movable and conductive part, and an electromechanical transducer, the transducer moving the workpiece mobile, depending on an electric current applied to this transducer and against at least one restoring force applied to the moving part, between a rest position in which the moving part is physically in contact with each of the two pads and a release position in which this moving part is distant from each of the electrical pads, the transducer being provided with two connection terminals and comprising first and second loops disposed on either side of the movable part and electrically connected to each other. to one another via this moving part, each loop producing, in a zone of influence and under the effect of the electrical carrier flowing between said terminals, a magnetic field having a main direction, and the movable part being electrically disposed between said terminals and extending in the zone of influence of each loop, transversely to the main direction of the magnetic field produced by this loop.

Un dispositif de ce type est par exemple connu de l'homme du métier par le document de brevet DE 196 29 867 .A device of this type is for example known to those skilled in the art by the document of DE 196 29 867 .

Les actionneurs actuels peuvent être de plusieurs types, et sont généralement constitués soit d'électroaimants soit de pots électrodynamiques.Current actuators can be of several types, and generally consist of either electromagnets or electrodynamic pots.

Les actionneurs à électroaimants présentent l'inconvénient d'avoir des constantes de temps de l'ordre de la milliseconde et sont donc relativement lents, en particulier lorsqu'ils sont du type à réluctance variable, les actionneurs à pots électrodynamiques ayant quant à eux l'inconvénient de n'offrir que des courses très faibles.Electromagnet actuators have the disadvantage of having time constants of the order of one millisecond and are therefore relatively slow, in particular when they are of the variable reluctance type, the electrodynamic pot actuators having in turn the disadvantage of offering only very small races.

Quel que soit leur type, les actionneurs connus présentent une structure relativement complexe.Whatever their type, the known actuators have a relatively complex structure.

Dans ce contexte, l'invention a pour but de proposer un actionneur exempt de l'un au moins des défauts constatés sur les actionneurs existants.In this context, the purpose of the invention is to propose an actuator free from at least one of the defects noted on the existing actuators.

A cette fin, l'actionneur de l'invention, par ailleurs conforme à la définition générique qu'en donne le préambule ci-dessus, est essentiellement caractérisé en ce que les première et deuxième boucles forment ensemble une bobine d'induction produisant, dans une zone d'influence unique, un champ magnétique unique exerçant sur la pièce mobile une force de Laplace unique agissant à l'encontre d'une force de rappel unique.To this end, the actuator of the invention, furthermore in accordance with the generic definition given in the preamble above, is essentially characterized in that the first and second loops together form an induction coil producing, in a single area of influence, a single magnetic field exerting on the moving part a single Laplace force acting against a single restoring force.

Contrairement à la structure décrite dans le document de brevet précité DE 196 29 867 , la pièce mobile, dans l'actionneur de l'invention, est disposée de manière à n'être soumise qu'à une force de Laplace, par exemple compensée en régime normal par une force de rappel exercée par un ressort, et non à deux forces de Laplace agissant dans des sens opposés sur ses extrémités et compensées par un couple élastique de rappel.Unlike the structure described in the aforementioned patent document DE 196 29 867 the moving part, in the actuator of the invention, is arranged to be subjected only to a Laplace force, for example compensated in normal regime by a restoring force exerted by a spring, and not two Laplace forces acting in opposite directions on its ends and compensated by an elastic return torque.

Par ailleurs, contrairement à la structure décrite dans la demande de brevet FR 2 897 469 déposée sous le numéro FR 2006/01234 , la pièce mobile, dans l'actionneur de l'invention, est disposée de manière à être soumise à une force de Laplace répulsive.Moreover, contrary to the structure described in the application for patent FR 2 897 469 filed under number FR 2006/01234 the moving part in the actuator of the invention is arranged to be subjected to a repulsive Laplace force.

Les première et seconde boucles, qui sont par exemple identiques, peuvent ne comprendre qu'une seule spire chacune.The first and second loops, which are for example identical, may comprise only one turn each.

Chacune de ces première et seconde boucles est par exemple constituée par un flan métallique découpé et plié, la pièce mobile pouvant en outre prendre la forme d'une barrette.Each of these first and second loops is constituted for example by a metal blank cut and folded, the moving part may also take the form of a bar.

L'actionneur de l'invention est très rapide et idéalement applicable à la réalisation d'un déclencheur rapide pour un organe de sécurité actif.The actuator of the invention is very fast and ideally applicable to the realization of a quick release for an active safety device.

D'autres caractéristiques et avantages de l'invention ressortiront clairement de la description qui en est faite ci-après, à titre indicatif et nullement limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une vue en perspective éclatée d'un actionneur conforme à l'invention;
  • la figure 2 est une vue en perspective partielle de cet actionneur;
  • la figure 3 est une vue latérale partielle de cet actionneur;
  • la figure 4 est une vue de dessous partielle de cet actionneur; et
  • la figure 5 est une vue en bout de ce même actionneur.
Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended drawings, in which:
  • the figure 1 is an exploded perspective view of an actuator according to the invention;
  • the figure 2 is a partial perspective view of this actuator;
  • the figure 3 is a partial side view of this actuator;
  • the figure 4 is a partial bottom view of this actuator; and
  • the figure 5 is an end view of this same actuator.

Comme annoncé précédemment, l'invention concerne un actionneur (ou actuateur) sensible à une surintensité électrique, du type comprenant deux plots électriques 11 et 12 espacés l'un de l'autre, une pièce conductrice mobile 2, et un transducteur électromécanique 3.As previously announced, the invention relates to an actuator (or actuator) sensitive to an electrical overcurrent, of the type comprising two electrical pads 11 and 12 spaced from one another, a movable conductive part 2, and an electromechanical transducer 3.

La pièce conductrice 2 est mobile entre une position de repos dans laquelle elle est physiquement en contact avec chacun des plots 11 et 12, et une position de déclenchement dans laquelle cette pièce mobile 2 est distante de chacun des plots.The conductive part 2 is movable between a rest position in which it is physically in contact with each of the pads 11 and 12, and a release position in which the movable part 2 is distant from each of the pads.

Le transducteur 3 a pour fonction de déplacer la pièce mobile 2, en fonction d'un courant électrique qui est appliqué sur ses bornes 31 et 32, à l'encontre d'une force de rappel appliquée à la pièce mobile 2, cette force de rappel pouvant être constituée par la force de gravité et / ou par une force élastique exercée par un ressort (non représenté).The function of the transducer 3 is to move the moving part 2, as a function of an electric current which is applied on its terminals 31 and 32, against a restoring force applied to the moving part 2, this force of recall may be constituted by the force of gravity and / or by an elastic force exerted by a spring (not shown).

Selon l'invention, le transducteur 3 est formé par une bobine d'induction électromagnétique, propre à produire, sous l'effet du courant électrique circulant entre ses bornes 31 et 32, un champ magnétique présentant une direction principale H dans une zone d'influence Z.According to the invention, the transducer 3 is formed by an electromagnetic induction coil, adapted to produce, under the effect of the electric current flowing between its terminals 31 and 32, a magnetic field having a main direction H in a zone of Z influence.

Par ailleurs, la pièce mobile 2 est disposée électriquement entre les bornes 31 et 32 de la bobine 3 et s'étend dans la zone d'influence Z de cette bobine, transversalement à la direction principale H du champ magnétique.Moreover, the moving part 2 is electrically disposed between the terminals 31 and 32 of the coil 3 and extends in the zone of influence Z of this coil, transversely to the main direction H of the magnetic field.

Grâce à cet agencement, la pièce mobile 2 est à la fois plongée dans le champ magnétique produit par la bobine 3 et traversée par le même courant que cette bobine, de sorte qu'elle est soumise aux forces de Laplace.Thanks to this arrangement, the moving part 2 is both immersed in the magnetic field produced by the coil 3 and traversed by the same current as this coil, so that it is subjected to Laplace forces.

Comme la pièce mobile 2, qui peut par exemple prendre la forme d'une simple barrette métallique, présente une très faible inertie, l'actionneur ainsi constitué présente une constante de temps extrêmement faible.As the moving part 2, which may for example take the form of a simple metal strip, has a very low inertia, the actuator thus formed has an extremely low time constant.

Il est important de souligner qu'en cas de surintensité, et bien que la pièce mobile 2 cesse alors d'être en contact physique avec les plots 11 et 12, le courant traversant la bobine 3 n'est pas interrompu.It is important to emphasize that in case of overcurrent, and although the moving part 2 then ceases to be in physical contact with the pads 11 and 12, the current flowing through the coil 3 is not interrupted.

En effet, ce courant continue de circuler à travers la pièce mobile 2 en raison de l'arc électrique qui se produit entre cette pièce et chacun des plots 11 et 12, la continuité du courant étant donc assurée sans avoir à recourir à des balais.Indeed, this current continues to flow through the moving part 2 due to the electric arc that occurs between this part and each of the pads 11 and 12, the continuity of the current is thus provided without having to resort to brushes.

La bobine d'induction 3 est constituée de deux boucles identiques 3A et 3B, disposées de part et d'autre de la pièce mobile 2, électriquement reliées l'une à l'autre par l'intermédiaire de cette pièce mobile 2, et formées de préférence, chacune par une seule spire.The induction coil 3 consists of two identical loops 3A and 3B, arranged on either side of the moving part 2, electrically connected to each other via this moving part 2, and formed preferably each by a single turn.

En cas de surintensité, le courant circulant à travers la bobine 3 est entretenu par les deux boucles 3A et 3B qui présentent une inductance de faible valeur.In case of overcurrent, the current flowing through the coil 3 is maintained by the two loops 3A and 3B which have a low value inductance.

Les boucles 3A et 3B sont avantageusement alimentées en courant par un condensateur chargé relié à la bobine 3 par l'intermédiaire d'un relais statique permettant une décharge rapide de l'énergie électrique stockée dans le condensateur.The loops 3A and 3B are advantageously supplied with current by a charged capacitor connected to the coil 3 by means of a static relay allowing a fast discharge of the electrical energy stored in the capacitor.

Le courant produit oscille entre ce condensateur et l'inductance que forment les boucles 3A et 3B en une onde sinusoïdale faiblement amortie.The current produced oscillates between this capacitor and the inductance formed by the loops 3A and 3B in a weakly damped sinusoidal wave.

L'actionneur de l'invention n'est pas sensible au sens du courant dans la mesure où les forces en jeu sont proportionnelles au carré de l'intensité du courant.The actuator of the invention is not sensitive to the direction of the current insofar as the forces involved are proportional to the square of the intensity of the current.

Par ailleurs, les pics de courant peuvent être importants, par exemple de l'ordre de 1000A, ce qui provoque des forces de Laplace importantes sur la pièce mobile 2, à laquelle est imprimé un mouvement extrêmement rapide.Moreover, the current peaks can be large, for example of the order of 1000A, which causes significant Laplace forces on the moving part 2, which is printed an extremely fast movement.

Comme le montrent les figures, qui illustrent le mode de réalisation industriel de l'invention, chacune des boucles 3A et 3B est avantageusement constituée par un flan métallique découpé et plié.As shown in the figures, which illustrate the industrial embodiment of the invention, each of the loops 3A and 3B is advantageously constituted by a metal blank cut and folded.

L'actionneur de l'invention trouve une application privilégiée dans la réalisation d'un déclencheur rapide pour un organe de sécurité actif, notamment pour un disjoncteur pourvu d'une alimentation électrique et susceptible d'utiliser l'énergie mise en oeuvre dans cet actionneur pour ouvrir le circuit électrique principal de ce disjoncteur en cas d'urgence, typiquement en cas de court-circuit.The actuator of the invention finds a privileged application in the realization of a quick release for an active safety device, in particular for a circuit breaker provided with a power supply and capable of using the energy used in this actuator to open the main circuit of this circuit breaker in case of emergency, typically in the event of a short circuit.

Claims (6)

  1. Actuator sensitive to an electrical overcurrent and comprising two electrical studs (11, 12) spaced apart from each other, a movable and conducting part (2), and an electromechanical transducer (3), the transducer (3) moving the movable part (2) as a function of an electrical current applied to this transducer (3), in opposition to at least one return force applied to the movable part (2), between a rest position in which the movable part (2) is physically in contact with each of the studs (11, 12) and a tripped position in which this movable part (2) is distant from each of the electrical studs (11, 12), the transducer (3) being provided with two connection terminals (31, 32) and comprising first and second loops (3A, 3B) arranged one on either side of the movable part (2) and connected electrically to each other through this movable part (2), each loop producing, within a zone of influence (Z) and under the effect of the electrical current flowing between said terminals (31, 32), a magnetic field having a principal direction (H), and the movable part (2) being arranged electrically between said terminals (31, 32) and lying within the zone of influence (Z) of each loop, transversely relative to the principal direction (H) of the magnetic field produced by this loop, said actuator being characterized in that the first and second loops (3A, 3B) form together an induction coil (3) which produces, in a single zone of influence (Z), a single magnetic field that exerts on the movable part a single Laplace force acting against a single return force.
  2. Actuator according to Claim 1, characterized in that the first and second loops (3A, 3B) are identical.
  3. Actuator according to Claim 1 or 2, characterized in that each of the first and second loops (3A, 3B) comprises a single turn.
  4. Actuator according to any one of the preceding claims, characterized in that each of the first and second loops (3A, 3B) is constructed from a metal blank which is cut and bent.
  5. Actuator according to any one of the preceding claims, characterized in that the movable part (2) is in the form of a bar.
  6. Application of the actuator according to any one of the preceding claims to the making of a fast trip device for an active safety member.
EP07290273A 2006-04-28 2007-03-05 Fast overcurrent actuator, and its application Not-in-force EP1850361B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07290273T PL1850361T3 (en) 2006-04-28 2007-03-05 Fast overcurrent actuator, and its application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0603870A FR2900496B1 (en) 2006-04-28 2006-04-28 SENSITIVE ACTUATOR WITH ELECTRIC OVERCURRENT AND QUICK RELEASE, AND APPLICATION

Publications (2)

Publication Number Publication Date
EP1850361A1 EP1850361A1 (en) 2007-10-31
EP1850361B1 true EP1850361B1 (en) 2010-04-28

Family

ID=37487402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290273A Not-in-force EP1850361B1 (en) 2006-04-28 2007-03-05 Fast overcurrent actuator, and its application

Country Status (6)

Country Link
EP (1) EP1850361B1 (en)
AT (1) ATE466374T1 (en)
DE (1) DE602007006090D1 (en)
ES (1) ES2347369T3 (en)
FR (1) FR2900496B1 (en)
PL (1) PL1850361T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3101678B1 (en) * 2015-06-01 2017-09-13 Wöhner GmbH & Co. KG Elektrotechnische Systeme Current interrupter
CN113948349B (en) * 2021-10-28 2023-12-12 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Piezoelectric tripping mechanism for circuit breaker

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE464158B (en) * 1989-07-04 1991-03-11 Asea Brown Boveri CONTACT DEVICE FOR ELECTRICAL CONNECTORS
DE19629867C2 (en) * 1996-07-24 2003-07-24 Moeller Gmbh Current limiting circuit breaker
FR2897469B1 (en) 2006-02-13 2009-07-10 Legrand France ELECTRICAL SWITCHING DEVICE WITH REINFORCED ELECTRICAL CONTACTS

Also Published As

Publication number Publication date
EP1850361A1 (en) 2007-10-31
ES2347369T3 (en) 2010-10-28
ATE466374T1 (en) 2010-05-15
FR2900496B1 (en) 2016-01-01
PL1850361T3 (en) 2010-09-30
DE602007006090D1 (en) 2010-06-10
FR2900496A1 (en) 2007-11-02

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