EP0310943B1 - Appareil de commutation électrique - Google Patents

Appareil de commutation électrique Download PDF

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Publication number
EP0310943B1
EP0310943B1 EP88116084A EP88116084A EP0310943B1 EP 0310943 B1 EP0310943 B1 EP 0310943B1 EP 88116084 A EP88116084 A EP 88116084A EP 88116084 A EP88116084 A EP 88116084A EP 0310943 B1 EP0310943 B1 EP 0310943B1
Authority
EP
European Patent Office
Prior art keywords
tripping
residual current
lever
switching mechanism
fault current
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
EP88116084A
Other languages
German (de)
English (en)
Other versions
EP0310943A3 (en
EP0310943A2 (fr
Inventor
Hermann Schmitt
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.)
ABB AG Germany
ABB AB
Original Assignee
Asea Brown Boveri AG Germany
Asea Brown Boveri AB
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 Asea Brown Boveri AG Germany, Asea Brown Boveri AB filed Critical Asea Brown Boveri AG Germany
Priority to AT88116084T priority Critical patent/ATE103416T1/de
Publication of EP0310943A2 publication Critical patent/EP0310943A2/fr
Publication of EP0310943A3 publication Critical patent/EP0310943A3/de
Application granted granted Critical
Publication of EP0310943B1 publication Critical patent/EP0310943B1/fr
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
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages

Definitions

  • the invention relates to an electrical switching device according to the preamble of claim 1.
  • circuit breakers are usually provided for each circuit to be protected, the phases of which are conducted via a common residual current circuit breaker for the purpose of switching off when fault currents occur.
  • a separate residual current circuit breaker detects the phases of the circuit in question and immediately interrupts the circuit in the event of a response, ie if a fault current occurs.
  • An electrical switching device of the type mentioned is known from FR-A 2 409 592.
  • the residual current release in this switching device actuates the switching mechanism via a leaf spring, so that the trigger itself must exert the force required to trigger it.
  • the fault current section does not have its own contact point.
  • a residual current circuit breaker in which a contact point is provided has become known from FR-A 2 553 572. However, nowhere is it specified how this switchgear should be assembled with a circuit breaker.
  • the object of the invention is to provide an electrical switching device of the type mentioned, which also requires a relatively small residual current release with the smallest possible space requirement and inexpensive to manufacture.
  • the inventive arrangement of the residual current circuit breaker in a housing with the width of a conventional switch module (17.5 mm) is made possible in that a particularly compact residual current release is used compared to the known residual current circuit breakers, the external dimensions of which allow it to be accommodated in such a housing.
  • the residual current releases previously used in conventional residual current circuit breakers each have larger dimensions, which do not allow the provision of such a narrow housing for accommodating all the necessary switch components.
  • the spatial size of the known residual current release is related to the release force required to actuate the switch contacts. Instead of a correspondingly large-sized residual current release, another way is taken in the invention to achieve the opening of the contact points without loss of the opening speed of the contact pieces.
  • the size and thus the triggering force of the residual current release is compensated for in accordance with the invention in that an auxiliary switching mechanism is connected between the trigger and the main switching mechanism, which picks up the pulse of the triggering plunger of the residual current trigger which is actuated in response and transmits it increasingly to the main switching mechanism.
  • the auxiliary switching mechanism is provided with a release lever which supports a pawl which is acted upon by an energy store and which works together with a ratchet lever of the main switching mechanism by means of a transmission lever.
  • the release lever is designed as a rocker that can be pivoted about a pivot point.
  • the shorter lever arm of the switching or trigger rocker works together with the pawl, while its longer lever arm can be acted on by the trigger plunger of the residual current device.
  • the auxiliary switching mechanism has a return spring with overpressure for resetting the tripping cam of the residual current release. With the help of this return spring, the trigger plunger and with it a movable armature arranged in the residual current release can be reset to its initial position after the triggering.
  • the same switching mechanism as is used in the line protection pole is provided for the main switching mechanism of the fault current pole.
  • auxiliary switch together with the residual current release close to the main switch so that there is enough space in the housing of the residual current circuit breaker to accommodate the evaluation unit as well as the contact point and the arc extinguishing device assigned to it is.
  • auxiliary switching mechanism it can further be provided to arrange the few individual parts of the auxiliary switching mechanism together with the residual current release on a common circuit board, which simplifies the assembly of the tripping unit and increases its functional reliability.
  • auxiliary switching mechanism it is also possible to fix the individual aforementioned parts of the auxiliary switching mechanism as well as the residual current release with the help of projections, pins and bearings which are molded onto the housing wall. This variant is supported by the possibility of producing such a housing in one operation as an injection molded part.
  • a switching device 10 which is composed of a circuit breaker 12 and a residual current circuit breaker 14, which are arranged in separate module-like housings 13, 15 arranged side by side.
  • the two housings 13, 15 are almost identical on the outside in terms of their outer dimensions - the thickness of the housings corresponds to the specified module size of 17.5 mm - and also in terms of their shape, with the exception of a test button 16, by means of which the fault current pole 14 functions is verifiable.
  • both individual switches 12, 14 each have actuating terminals, not shown, which can be actuated by actuating openings 18 and which can be reached via supply openings 20 for the connection of supply and outgoing conductors.
  • the switching device 10 On its front side, which points upwards in FIG. 1, the switching device 10 according to the invention has two switching handles 22, which are coupled to one another by means of a connecting part 23 placed thereon, as a manual actuating element with which the contact points of the switching device 10, not shown in this illustration, can be actuated manually .
  • the switching device 10 On its rear side, which points downward in FIG. 1, the switching device 10 has a recess 24, which is used to hold a mounting rail, not shown, preferably a top-hat mounting rail.
  • the recess 24 open towards the flat sides is limited on the one hand towards the narrow sides by a fixed latching lug 26 which serves to support an edge of the mounting rail.
  • the recess 24 is delimited by a transverse edge 25 which is penetrated in a known manner by a movable locking slide 28 which engages behind the other edge of the mounting rail.
  • a movable locking slide 28 which engages behind the other edge of the mounting rail.
  • the switching device 10 composed of two individual switches 12, 14 is held together by connecting elements 17 and thus forms a unitary block, which is additionally provided by a coupling part (not shown in this illustration), which serves for the mechanical coupling of the switching elements of the two individual switches 12, 14. is also standardized in its function.
  • the individual switches 12, 14 combined to the switching device 10 according to the invention each have a main switching mechanism in the interior of their housings 13, 15, which is connected on the one hand to the switching handle 22 and on the other hand for actuating a contact point likewise provided in each individual switch 12, 14, each of which consists of a movable and a fixed contact piece is formed.
  • Such a main switching mechanism is known from EP-B1 0 144 799, which relates to a circuit breaker as used in the invention.
  • Such a main switching mechanism is also provided in the residual current protection pole 14 of the switching device 10, which is also connected on the one hand to the manual control handle 22 and on the other hand is acted upon by an auxiliary switching mechanism 30 explained in FIGS. 2 to 5.
  • Figures 2 to 5 show a schematic representation of individual switching positions of the auxiliary switching mechanism 30.
  • FIG. 2 shows the switch-on position of the residual current protection pole 14, the contact point 31 of which is formed from a movable contact piece 30 and a fixed contact piece 32, which is only symbolically indicated, is closed.
  • the movable contact piece 30 is fastened to a contact arm 34 which is pivotally mounted about a pivot point 35.
  • a spring 36 is arranged on the lever arm 341 facing away from the movable contact piece 30, which spring is supported on the one hand on the housing 15 and on the other hand on the lever arm 341 of the contact arm 34.
  • a switching rod 38 is articulated, the other end of which is connected to a ratchet lever 40, where it is guided in an elongated hole 401.
  • the pawl lever 40 has a detent 402, which is supported in a recess 421 of a trigger lever 42.
  • the trigger lever 42 is pivotally guided at one end on an axis of rotation 43 and acted on by a torsion spring, not shown, in the clockwise direction.
  • the axis of rotation 43 also serves to mount the shift handle 22, which is not shown in this illustration and which is connected in an articulated manner to the joint 381 of the shift rod 38, which is guided in the elongated hole 401, via a connecting lever, also not shown.
  • the previously mentioned and described parts in FIG. 2 belong to the main switching mechanism already mentioned. These parts were addressed in so far as they interact in interaction with the auxiliary switch 44 now described below.
  • auxiliary switching mechanism 44 which enables the invention, which has a rocker switch 46 with a fulcrum 45, an energy store 48 with a fulcrum 47, a latching lever 50 also with the fulcrum 47, a release rod 52, which is articulated in a fulcrum 51 in the latching lever 50, and a return spring 54, which has a fulcrum 53, and a return spring 56, which acts on the short lever arm 461 of the release rocker 46 in a clockwise direction .
  • a fault current release 60 with a release plunger 61 is arranged directly adjacent to the auxiliary switching mechanism 44.
  • both the main switching mechanism and the auxiliary switching mechanism 44 are in the balance of the forces.
  • the contact arm 34 of the movable contact piece 30 is supported on the pawl lever 40 via the switching rod 38. Due to the special position of the pawl lever 40 shown in FIG. 2, at which its fulcrum 41, which is partially covered by the latching lever 50, below the connecting straight line from the supporting edge 421 of the release lever 42 to the other articulation point 382 of the switching rod 38 arranged in the contact arm 34 lies, the hinge point 381 is fixed to the end of the elongated hole 401 facing away from the latch 402. As already mentioned, the pawl lever 40 is supported on the support edge 421 in the release lever 42 by the action of a spring with its latching lug 402.
  • the auxiliary switching mechanism 44 is also in equilibrium in the illustration shown in FIG. 2.
  • the short lever arm 461 of the trigger rocker 46 is pressed by the spring 56 into the latching lever 50, so that a pawl 501 formed thereon is supported on the end face of the trigger rocker 46.
  • the energy accumulator 48 which is designed as a torsion spring, is supported with its one lever arm on the housing 15 or on the guide of the auxiliary switching mechanism 44 and with its other one on the pivot pin 51 formed on the latching lever 50, to which the trigger rod 52 is articulated.
  • FIG. 3 shows an intermediate position between the on and the off position of the switching system of the residual current protection pole 14 formed from the main switching mechanism and auxiliary switching mechanism 44, in which the residual current release 60 was activated as a result of the occurrence of a residual current and its switching plunger 61 has pivoted the rocker switch 46 counterclockwise from its normal position.
  • the short lever arm 461 of the trigger rocker 46 pivots counterclockwise, so that the pawl 501 of the latch lever 50 loses its support and also pivots counterclockwise under the action of the energy accumulator 48 about the axis of rotation 47.
  • the return spring 56 is tensioned.
  • FIG. 4 shows a further intermediate position of the previously described switching arrangement.
  • the pawl lever 40 has carried out a pivoting movement of approximately 30 °.
  • the shift rod 38 can slide to the right in the direction of the latch 402 of the ratchet lever 40 with its pivot point 381 in the elongated hole 401 of the ratchet lever 40, this movement being supported by the spring 36 which acts on the upper lever arm 341 of the contact arm 34.
  • the contact arm 34 pivots clockwise about the axis of rotation 35, as a result of which the movable contact piece 30 lifts off the fixed contact piece 32 and the contact point 31 is open.
  • the lever arm 341 of the contact arm 34 presses with its end designed as a shoulder 342 against the latching lever 40, which in turn carries out a pivoting movement in a clockwise direction about the pivot axis 47.
  • the latch lever 40 When it pivots clockwise around its pivot point 41, which is covered by the latch lever 50 in FIG. 4, the latch lever 40, with its free end, which carries the latch 402, acts on the return spring 54 in such a way that it pivots about the pivot point 53 the release plunger 61 of the residual current release 60 returns to its rest position.
  • the return spring 54 is designed as a resilient lever, the embodiment shown in the example offering itself as a fork lever.
  • the resilient resilience is necessary to ensure that the movable armature connected to the trigger plunger in the residual current release 60 actually lies in its rest position on the magnetic yoke of the residual current release and thus assumes its rest position.
  • the resilient flexibility of the return spring 54 allows a certain amount of overpressure, which at the same time enables the compensation of manufacturing or wear-related tolerances.
  • FIG. 5 shows the switch-off position of the fault current pole 14, in which the movable contact piece 30 is lifted off the fixed contact piece 32, but the auxiliary switching mechanism 44 is already fully tensioned again.
  • the shoulder 342 of the contact arm 34 is still in contact with the latching lever 50 and acts on it in a clockwise direction, so that its pawl 501 is at a certain distance from the end face of the rocker switch 46.
  • the free end of the trigger rod 52 does not lie directly on the trigger lever 42 but on an extension 422 which serves to guide the trigger rod 52.
  • the detent 402 of the pawl lever 40 has again taken its place in the recess with the support edge 421 in the release lever 42. Only the shift rod 38 lies with its articulation point 381 within the elongated hole 401 above the position which it assumes in the switched-on state.
  • the following summary is intended to illustrate the function of the auxiliary switching mechanism 44 used in the switching device 10 according to the invention in its residual current protective pole 14 with a compact residual current release 60.
  • the residual current protection pole 14 of the switching device 10 according to the invention has a main switching mechanism that is identical to that of the adjacent circuit breaker 12. While in the circuit breaker for actuation, d. H.
  • an overcurrent and a short-circuit current release are provided in a known manner, the triggering forces of which are sufficient to trigger the switching mechanism which is acted upon by a strong energy accumulator for the purpose of quick opening, such a space is not located in the fault current protection pole 14 of the switching device 10 because of the reasons mentioned at the beginning available, but only a residual current release 60 adapted to the module dimensions can be used. Due to its size, however, this residual current release 60 is not able to release enough energy to trigger the main switching mechanism in a manner comparable to that of the circuit breaker 12.
  • auxiliary switching mechanism 44 which serves to amplify the low tripping force of the residual current release 60 almost without delay and to transmit it to the main switching mechanism in response to triggering it.
  • the invention makes use of the interaction of lever arms and energy stores.
  • the trigger rocker 46 has a long and a short lever arm 461 and can be pivoted about the pivot point 45.
  • the trigger plunger 61 of the residual current release 60 acts on the long lever arm of the trigger rocker 46 in such a way that it carries out a pivoting movement counterclockwise about the axis of rotation 45 and thereby the short lever arm 461 loses its support function for the latch lever 50, which in turn is acted upon by an energy accumulator 48.
  • the latch lever 50 executes a pivoting movement in the counterclockwise direction due to the action by the energy store 48 and in doing so presses the release lever 42 of the main switching mechanism out of its rest position via a release rod 52, so that the latch lever 40 supported therein is unlatched and, following the action by a spring, likewise pivots clockwise.
  • the hinge point 381 of the shift rod 38 fixed up to that point in the elongated hole 401 can slide therein guided by the elongated hole 401.
  • the movable contact piece 30, which is attached to the contact arm 34 lifts off from the fixed contact piece 32, so that the contact point 31 of the residual current protection pole 14 is open.
  • axis of rotation 43 of the release lever 42 also represents the axis of rotation for the manual control handle 22, which couples both main switching mechanisms via the connecting part 23, so that manual actuation of the contact points is also possible.
  • the residual current protection pole 14 has a test button 16, by means of which a residual current signal can be artificially generated, which leads to the response of the residual current release, which also triggers the switching mechanism in the manner described above.
  • the residual current protection pole 14 is connected to the adjacent circuit breaker 12 via a coupling part (not shown in more detail), which serves to trigger the other switch pole in the event of one switch pole also tripping, so that in every response, be it an Uber or short circuit - or fault current, both individual switches 12, 14 are triggered, so that the circuit protected by the switching device 10 according to the invention is switched off.

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  • Breakers (AREA)
  • Sewing Machines And Sewing (AREA)
  • Electronic Switches (AREA)
  • Relay Circuits (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (10)

  1. Coupe-circuit électrique destiné à être enfilé sur des profilés-supports, comportant un disjoncteur de protection de ligne électrique (12) unipolaire et un disjoncteur à courant de défaut (14) qui sont disposés dans des boîtiers (13, 15) séparés mais liés l'un à l'autre, avec une largeur de module de par exemple 17,5 mm, et qui comprennent respectivement des moyens de déclenchement pour actionner des pièces de contact mobiles (30), formant des contacts (31) avec des pièces de contact fixes (32), ainsi que des manettes de commutation (22) qui permettent, par l'intermédiaire chacune d'au moins un mécanisme de commutation muni d'un point d'encliquetage, l'actionnement manuel des pièces de contact mobiles (30), le disjoncteur à courant de défaut (14) et le disjoncteur de protection de ligne (12) ayant chacun un mécanisme de commutation principal de structure identique qui sont liés entre eux au moyen d'un dispositif d'accouplement et actionnent les pièces de contact mobiles (30), caractérisé par le fait que le disjoncteur de protection de ligne (12) et le disjoncteur à courant de défaut (14) présentent tous deux un contact comportant une pièce de contact fixe (32) et une pièce de contact mobile (30) et par le fait que le disjoncteur à courant de défaut (14) comporte en outre un mécanisme de commutation auxiliaire (44) qui coopère avec un déclencheur par courant de défaut (60) et amplifie l'impulsion de déclenchement de celui-ci transmise par le poussoir de déclenchement (61), la transmet au levier de déclenchement (42) du mécanisme de commutation principal, en provoquant ainsi la libération de celui-ci, ce qui entraîne l'ouverture du contact (31) associé.
  2. Coupe-circuit électrique selon la revendication 1, caractérisé par le fait que le mécanisme de commutation auxiliaire possède un levier d'encliquetage (50), soumis à l'action d'un accumulateur d'énergie (48), qui est à son tour relié par l'intermédiaire d'une tige de déclenchement (52) au levier de déclenchement (42) du mécanisme de commutation principal et porte contre une bascule de déclenchement (46) qui est commandée par le poussoir de déclenchement (61) du déclencheur par courant de défaut (60).
  3. Coupe-circuit électrique selon la revendication 2, caractérisé par le fait que, en cas de fonctionnement, le poussoir de déclenchement (61) du déclencheur par courant de défaut (60) amène la bascule de déclenchement (46) à effectuer un mouvement pivotant en sens inverse des aiguilles d'une montre, à la suite de quoi le levier d'encliquetage (50) perd son appui et, sous l'action de l'accumulateur d'énergie (48), éloigne, par l'intermédiaire de la tige de déclenchement (52), le levier (42) du mécanisme de commutation principal de sa position de repos, provoquant de ce fait la libération d'un levier à cliquet (40) qui est relié par l'intermédiaire d'une bielle (38) à un bras de contact (34) portant la pièce de contact mobile (30) et provoquant donc l'ouverture du contact (31).
  4. Coupe-circuit électrique selon l'une des revendications précédentes, caractérisé par le fait que l'accumulateur d'énergie (48) est agencé sous forme de ressort à branches qui prend appui d'une part contre le boîtier (15) ou l'élément-guide pour un mécanisme de commutation auxiliaire (44) et d'autre part contre un pivot (51) disposé sur le levier d'encliquetage (50).
  5. Coupe-circuit électrique selon l'une des revendications précédentes, caractérisé par le fait que pour ramener la bascule de déclenchement (46) dans sa position initiale, il est prévu un ressort de rappel (56) qui agit sur la bascule de déclenchement (46) de manière telle qu'elle ait tendance à s'encliqueter avec le levier d'encliquetage (50).
  6. Coupe-circuit électrique selon l'une des revendications précédentes, caractérisé par le fait qu'il est prévu un ressort de rappel (54) qui permet de ramener à sa position de repos le poussoir de déclenchement (61) du disjoncteur à courant de défaut.
  7. Coupe-circuit électrique selon la revendication 6, caractérisé par le fait qu'après le déclenchement, le ressort de rappel est soumis à l'action du levier à cliquet (40) du mécanisme de commutation principal en vue de ramener à sa position initiale le poussoir de déclenchement (61).
  8. Coupe-circuit électrique selon l'une des revendications précédentes, caractérisé par le fait que le bras de contact (34) comporte un épaulement (342) qui, lors du décollement de la pièce de contact mobile (30), ramène le levier d'encliquetage (50) à sa position de repos et tend en même temps l'accumulateur d'énergie (48).
  9. Coupe-circuit électrique selon l'une des revendications précédentes, caractérisé par le fait que le ressort de rappel est agencé sous forme de lame de ressort courbée en U, qui est disposée avec possibilité de pivotement autour d'un pivot (53).
  10. Coupe-circuit électrique selon l'une des revendications précédentes, caractérisé par le fait que la bascule de commutation (46) est agencée sous forme de traverse comportant un pivot (45) qui est disposé de façon excentrée dans le sens longitudinal de la traverse.
EP88116084A 1987-10-05 1988-09-29 Appareil de commutation électrique Expired - Lifetime EP0310943B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88116084T ATE103416T1 (de) 1987-10-05 1988-09-29 Elektrisches schaltgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873733595 DE3733595A1 (de) 1987-10-05 1987-10-05 Elektrisches schaltgeraet
DE3733595 1987-10-05

Publications (3)

Publication Number Publication Date
EP0310943A2 EP0310943A2 (fr) 1989-04-12
EP0310943A3 EP0310943A3 (en) 1990-06-20
EP0310943B1 true EP0310943B1 (fr) 1994-03-23

Family

ID=6337628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88116084A Expired - Lifetime EP0310943B1 (fr) 1987-10-05 1988-09-29 Appareil de commutation électrique

Country Status (4)

Country Link
EP (1) EP0310943B1 (fr)
AT (1) ATE103416T1 (fr)
DE (2) DE3733595A1 (fr)
ES (1) ES2053666T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410726B (de) * 1993-03-18 2003-07-25 Felten & Guilleaume Ag Oester Schutzschalter
DE19735413B4 (de) * 1997-08-14 2007-11-29 Siemens Ag Auslösevorrichtung für einen Schutzschalter
EP0951045A3 (fr) * 1998-04-14 2000-07-12 ABBPATENT GmbH Disjoncteur à courant de défaut
DE102007043253B4 (de) * 2007-09-11 2014-04-24 Siemens Aktiengesellschaft Griffbrücke, Fehlerstromschutzeinrichtung sowie System aus Fehlerstromschutzeinrichtung und Leitungsschutzschalter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908154A (en) * 1974-09-13 1975-09-23 Ite Imperial Corp Two pole ground fault circuit protector
DE2508428B2 (de) * 1975-02-27 1978-10-12 Brown, Boveri & Cie Ag, 6800 Mannheim Fehlerstromschutzschalter
DE2651596C3 (de) * 1976-11-12 1979-05-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Mit einem Leitungsschutzschalter kombiniertes Fehlerstrombauteil
FR2409592A1 (fr) * 1977-11-21 1979-06-15 Legrand Sa Module disjoncteur et module differentiel pour disjoncteur differentiel
AT374969B (de) * 1982-08-19 1984-06-25 Biegelmeier Gottfried Leitungsschutzschalter mit fehlerstromausloesung
EP0143682B1 (fr) * 1983-10-04 1989-05-17 Hager Electro S.A. Perfectionnements aux interrupteurs à coupure automatique, notamment aux interrupteurs différetiels et disjoncteurs
IT1195443B (it) * 1983-10-13 1988-10-19 Ave Spa Interruttore differenziale perfezionato di ridotto ingombro
DE3342469A1 (de) * 1983-11-24 1985-06-05 Bbc Brown Boveri & Cie Elektrischer schalter

Also Published As

Publication number Publication date
ATE103416T1 (de) 1994-04-15
DE3888617D1 (de) 1994-04-28
EP0310943A3 (en) 1990-06-20
DE3733595A1 (de) 1989-04-20
ES2053666T3 (es) 1994-08-01
EP0310943A2 (fr) 1989-04-12

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