EP0570647B1 - Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert - Google Patents

Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert Download PDF

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Publication number
EP0570647B1
EP0570647B1 EP92440055A EP92440055A EP0570647B1 EP 0570647 B1 EP0570647 B1 EP 0570647B1 EP 92440055 A EP92440055 A EP 92440055A EP 92440055 A EP92440055 A EP 92440055A EP 0570647 B1 EP0570647 B1 EP 0570647B1
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EP
European Patent Office
Prior art keywords
contact
lock mechanism
contacts
mechanism according
pivot
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
EP92440055A
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English (en)
French (fr)
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EP0570647A1 (de
Inventor
Denis Deckert
Gilles Bernard
Olivier Duez
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Hager Electro SAS
Original Assignee
Hager Electro SAS
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 Hager Electro SAS filed Critical Hager Electro SAS
Priority to EP92440055A priority Critical patent/EP0570647B1/de
Priority to DE92440055T priority patent/DE69200059D1/de
Priority to AT92440055T priority patent/ATE102391T1/de
Publication of EP0570647A1 publication Critical patent/EP0570647A1/de
Application granted granted Critical
Publication of EP0570647B1 publication Critical patent/EP0570647B1/de
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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • 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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor

Definitions

  • the present invention relates to a lock mechanism for a magneto-thermal circuit breaker or similar device, in particular for phase and neutral circuit breaker. It also relates to circuit breakers fitted with this mechanism.
  • Line protection circuit breakers include, in a housing, a circuit extending between two terminals and include a thermal trip bimetal for protection of the line against overloads and an electromagnetic tripping device comprising a coil with an associated plunger core to a striker, to ensure, in the event of a short circuit, the tripping by opening of a movable contact cooperating with one or more fixed contacts.
  • the phase and neutral circuit breakers comprise, in addition to the phase stage as described, a neutral stage with fixed and mobile contacts, the mobile neutral contact being actuated jointly with the mobile phase contact.
  • the actuation of the movable contact is generally carried out by a locking mechanism, of the toggle type, usually comprising an operating member with a lever type lever actuated manually and causing a rod tending to push back a pivoting contact carrier which carries one or several movable contacts to bring them each in pressure contact against a fixed contact, up to a position in which the return in the opposite direction, towards the contact opening, is normally prevented by a pawl preventing the link, by pressing the toggle joint on the contact carrier, from escaping and to release this one.
  • Manual opening is carried out by operating the handle in the opposite direction.
  • the disjunction is generally caused by the action of the bimetallic strip or the striker of the coil against a trigger lever so as to cause the release of the pawl and therefore the escape of the link, and, in the case of magnetic disjunction, the forced opening of the contact carrier.
  • the return spring of the contact carrier also serves to ensure the contact pressure.
  • Such a mechanism is described, for example, in the document FR-A-2 648 615.
  • a mechanism according to the preamble of claim 1 is described in the document EP-A-0 224 396, which shows an elastic member being a spring of the pin type.
  • the present invention proposes to remedy these drawbacks and to provide a lock mechanism suitable for automated mounting in a circuit breaker, both in the case of a simple circuit breaker and in the case of a phase and neutral circuit breaker. .
  • Another object of the invention is to provide a lock mechanism making it possible, in the case of a phase and neutral circuit breaker, to assign independent contact pressures to the movable phase and neutral contacts.
  • Another object of the invention is to provide a particularly simple, inexpensive lock mechanism that takes up as little space as possible.
  • yet another objective is to be able to assemble the devices according to the invention along a single mounting axis.
  • the subject of the invention is therefore a mechanism according to claim 1.
  • the great novelty consists in the fact that it is no longer necessary to mount the lock mechanism as a sub-assembly ready to be assembled, since the two supports of the spring are on the movable contact. This means that this torsion type spring can be mounted on the movable contact without the contact carrier being attached to it. And therefore, the automation of the various elements of the moving assembly can be total.
  • the elastic return member is a spring of the pin type.
  • the pawl and the triggering means are made in one piece, in particular in molded plastic, and are pivoted on the pivot axis of the contact carrier (s).
  • the contact carrier preferably has at least one pivot on which the pawl-tripping means assembly is placed and a movable contact with its elastic contact member.
  • the contact carrier has a recess whose median axis is aligned with that of the pivot and by which the contact carrier can be pivotally placed on a shaft end carried by the circuit breaker housing and capable of receiving the other movable contact and its elastic contact member.
  • the contact carrier can also include another pivot for supporting a movable contact and its elastic contact member.
  • the contact holder preferably being made of molded plastic, the pivot (s) can advantageously come from molding. However, it is understood that one can also use added pivots.
  • the two elastic contact members can be of different strengths.
  • the pawl and the triggering means are preferably made in one piece from molded plastic.
  • the rearming of the pawl, that is to say its return to the closed position, can advantageously be ensured by the return spring of the operating member.
  • the contact carrier is made of molded plastic and has a transverse head serving to support the return spring of the contact carrier, separated from the body of the contact carrier by a light in V having said ramp-up ramp, and the body of the contact carrier has, on its lateral faces, the pivot and the recess respectively, as well as each time a finger located closer to the head than the pivot or the recess and, with respect to the latter, opposite the operating member.
  • identical mobile contacts can be used, formed of metal parts with flat cross sections and comprising, in an enlarged part, a notch in the form of a secondary quasi-orifice engaging around the aforesaid finger and a lateral lug forming a fulcrum for the elastic contact member, the widened part being extended by an elongated part having the actual electrical contact point, and, on the opposite edge of said elongated part, a notch forming the second point of support for the elastic contact member.
  • the main orifice of the enlarged part is provided oblong, so that the elastic members perfectly play their role of increasing the pressure of the movable contact on the fixed contact.
  • the invention also relates to circuit breakers comprising such a lock mechanism.
  • this lock mechanism lends itself perfectly to automated mounting piece by piece in a circuit breaker box, as is moreover apparent from the part of the description which follows and which relates to an mounting method.
  • a mechanism could also be pre-assembled, in particular thanks to the use of a single added pivot axis.
  • the circuit breakers according to the invention are preferably modular devices, that is to say whose width is equal to a multiple of a defined module. They usually include a housing having a base 1 provided with means 2 for fixing and / or clipping (with retractable latch, not shown) on a support rail, not shown, and a top 3 having an opening 4 for the passage of the actuating handle 5a of an operating member 5 of a lock mechanism which will be described later.
  • the housing still usually has two short sides 6 and 7 having the electrical connection terminals and two large faces 8 and 9 called lateral faces, which are parallel to the median plane of the housing.
  • FIGS. 1 and 2 are partial left views of the interior of an apparatus according to the invention, and in FIG. 3, the right side of the sheet corresponds to the right side of the case, face 9.
  • FIGS. 1 and 2 reveal the phase and neutral stages of the circuit breaker respectively.
  • phase and neutral terminals are respectively shifted in height, for the purpose of polarization.
  • the circuit breaker further comprises the above-mentioned operating member 5 with its actuating handle 5a, intended to act, by means of a link 39, on the lock mechanism 40 which mainly comprises a movable contact carrier 41 with a toggle joint device, cooperating with the link 39 and with a pawl 42 integral with a trigger lever 43, with the lock mechanism 40, which is biased by the coil 33 and by the bimetallic strip 27, in the latter case via a trainer 44.
  • the left and right half-shells as well as the spacer are specific to the chosen configuration, neutral on the left or neutral on the right.
  • a left half-shell 10 ' is used for the neutral side, a spacer 12' and a right half-shell 11 'for the phase stage.
  • this lock mechanism 40 generally comprises the movable contacts and the operating member 5 with its actuation handle 5a and its spring. recall 96.
  • the operating member has a pivot axis 45 and, laterally, an extension 46 pierced with a passage 47 parallel to said pivot axis 46 and in which one of the two end branches of the link can be articulated 39, which has a U shape.
  • the return spring 96 has a first branch 96a secured to the operating member and a second branch 96b intended to bear against the pawl 42 to ensure rearming as will be seen below. .
  • the mechanism also includes the contact carrier 41 made of molded insulating material and having an upper transverse head 48 provided, opposite the operating member 5, with a bearing 49 serving to support a powerful return spring 50 of the contact carrier 41 in the open position of the contacts.
  • the head 48 has a part 48a, connecting to the body 55 of the contact carrier 41 and having an elongated lumen 51, substantially V-shaped in cross section, the shape of which will appear better in FIGS. 11 and 12, and which receives the second end arm 39a of the link.
  • the light 51 comprises a first part 52 which is substantially horizontal when the device is placed on its base 1 (see FIGS.
  • the body 55 of the contact carrier 41 has on one side a cylindrical protuberance 56 forming a pivot (hereinafter pivot 56), which is characterized by two parts of different diameters, namely a part 57 of large diameter, body side 55, and an outer part 58, of smaller diameter.
  • This pivot 56 is hollow and therefore has a first outer section 60 of large diameter extending by a second inner section 62, of smaller diameter.
  • the body 55 has laterally two arcuate shoulders 63, symmetrical to one another, one of which overhangs the part 58 of the pivot 56 and which both overhang fingers 64 also provided on each of the sides of the body 55
  • the upper surface of the body 55 forms the transition surface between the two parts 52 and 53 of the lumen 51, with the pushing surface 54. This surface is made to allow passage and movement of the end 39a of the link.
  • the mechanism further comprises a molded plastic part which joins the pawl 42 and the trigger lever 43 and which has, on one of its faces and transverse to it, a cylinder trunk 65 whose light s' fits on the part 57 of the pivot 56 for pivoting mounting on the contact carrier 41.
  • the pawl 42 formed by a protruding rim on the same side as the cylinder trunk 65, is intended to normally block the end 39a of the link 39 in the inclined part 53 of the light 51 and it can be erased so as to allow said rod end 39a to escape in the part 52 of the light 51, when the magnetic disjunction means are actuated or under the influence of the bimetallic strip.
  • the return spring 96 then allows the pawl 42 to be reset under the action of the branch 96b when, starting from the disjunction position, the lever 5a is brought back in a trigonometric direction to the "On" position (FIG. 15).
  • the trigger lever 43 has an intermediate surface 66 intended to be struck by the percussion rod or striker of the electromagnetic coil 33 and, at its end opposite to the previous one, a spout 67 mechanically connecting the bimetallic strip 27 to the lever 43 via the driver 44 ( Figures 3 and 4) to ensure thermal disjunction.
  • the movable contacts 17 and 29, which can be neutral or phase depending on the embodiment of the circuit breaker, are identical and have, in a head 68, a main orifice 69, which is slightly oblong, intended to come on the axis pivoting mechanism, that is to say, in the embodiment described and shown ( Figures 7, 9,10), either on the part 58 of the pivot 56 for the left movable contact, or on a tip shaft carried by a housing half-shell and coming to be placed in the recess 59 of the contact carrier 41, for the right movable contact.
  • a notch in the form of a quasi-orifice 70 is also provided in the head 68 and is intended to be engaged on the finger 64 of the contact carrier 41, a finger which in reality acts as an axis of articulation of the movable contact when one arrives in the contact position. It should indeed be noted that the pivoting axis of the movable contacts is different from that of the lock, for reasons considered later.
  • the head 68 is extended by an elongated part 72 having the actual electrical contact point, reference 73, and, on the side opposite this last, a notch 74. Finally, on its edge opposite to said elongated part 72, the head has a lateral lug 71 coming from folding.
  • Each movable contact 17, 29 is associated with a powerful contact spring 76, having a turn, having two branches 77, 78 forming at rest a slightly obtuse angle, the branch 77 further comprising an end 79 folded at right angles to the outside. .
  • This spring is shaped so as to normally maintain the movable contact on its axis and, in the closed position, to ensure the contact pressure on the corresponding fixed contact.
  • the turn of the spring 76 is placed around the axis (pivot 56 or end of the shaft of the housing), while the branch 77, by its end 79, and the branch 78 engage in the notches 74 and against the lugs 71, respectively.
  • the establishment of the spring is done under stress by bringing the two branches 77,78 towards one another.
  • the actuator 5 no longer being entirely in the "Stop" position, but in an intermediate position, shown in FIG. 13, the open contact position is guaranteed by the action in direct trigonometric direction of the powerful spring 50 on the assembly constituted by the contact carrier 41, the movable contacts 17 and 29 and the pawl 42.
  • the free end 39a of the rod 39 is then held by the pawl 42 against the inclined thrust surface 54.
  • the action of the pawl 42 is possible because the spring 96 brings it closer to the contact carrier.
  • This wear stroke is in particular intended to compensate for the play which would possibly result from the wear of the contacts, and which would create contact problems, making the circuit breaker much less reliable.

Landscapes

  • Breakers (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Transmitters (AREA)

Claims (13)

  1. Überlastschalter-Schloßmechanismus des Typs mit wenigstens einem beweglichen Kontakt (17, 29), der mit einem oder mehreren festen Kontakten (20, 35) zusammenwirkt und die Unterbrechung durch Öffnen des oder der beweglichen Kontakte (17, 29) im Falle einer Überlast gewährleistet, mit einem Betätigungselement (5), das an einer Schwenkachse (95) angebracht ist, mit einem Betätigungshebel (5a) versehen ist und normalerweise von einer Rückstellfeder (96) in die Position mit geöffneten Kontakten zurückgedrängt ist, einem Schwingarm (39), wovon ein Ende exzentrisch in bezug auf die Schwenkachse (95) am Betätigungselement (5) angebracht ist, einem Kontaktschütz (41), das um eine Achse schwenkbar ist und eine Rampe (54) aufweist, gegen die sich das andere Ende (39a) des Schwingarms (39) abstützen und verspreizen kann, wenigstens einem beweglichen Kontakt (17, 29) der an der Schwenkachse des Kontaktschütz (41) so angebracht ist, daß er in bezug auf diesen etwas geschwenkt werden kann, um auf einen festen Kontakt (20, 35) einen Kontaktdruck auszuüben, und einer Sperrklinke (42), die am Kontaktschütz (41) angelenkt und dazu bestimmt ist, das Ende (39a) des Schwingarms in der Position geschlossener Kontakte zu blockieren, wobei die Sperrklinke (42) mit einem Auslösemittel (43) verbunden ist, das dazu geeignet ist, im Falle seiner Betätigung die Kippung der Sperrklinke (42) und die Freigabe des Schwingarms (39) hervorzurufen und eventuell für eine zwangsläufige Ablösung des beweglichen Kontakts (17, 29) das Kontaktschütz (41) in die geöffnete Position mitzunehmen, wobei der oder jeder bewegliche Kontakt (17, 29) in seiner Winkelstellung auf der Schwenkachse (94) des Kontaktschütz (41) durch ein elastisches Element (76) gehalten wird, das auf der Schwenkachse (94) einen Abstützpunkt und wenigstens einen Abstützpunkt auf dem beweglichen Kontakt (17 oder 29) besitzt, um diesen in bezug auf die Schwenkachse (94) in Richtung des Kontaktdrucks zum festen Kontakt (20, 35) zu ziehen, dadurch gekennzeichnet, daß das elastische Element (76) wenigstens zwei Abstützpunkte auf dem beweglichen Kontakt (17 oder 29 und 71) besitzt, wobei die beiden Abstützpunkte in entgegengesetztem Richtungssinn um die Schwenkachse (94) elastisch wirken, wobei derjenige Abstützpunkt, der bestrebt ist, die Kontakte zu schließen, eine größere Kraft ausübt als der andere Abstützpunkt.
  2. Schloßmechanismus gemäß Anspruch 1, dadurch gekennzeichnet, daß das elastische Kontaktelement (76) eine Feder vom Nadeltyp ist.
  3. Schloßmechanismus gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Sperrklinke (42) und das Auslösemittel (43) in einem Stück verwirklicht sind und an der Schwenkachse des Kontaktschütz (41) angelenkt sind.
  4. Schloßmechanismus gemäß Anspruch 3, angewandt auf Phasen- und Nulleiter-Überlastschalter, dadurch gekennzeichnet, daß das Kontaktschütz (41) wenigstens einen Drehpunkt (56) aufweist, an dem die Gesamtheit Sperrklinke (42)-Auslösemittel (43) sowie wenigstens ein beweglicher Kontakt (17, 29) mit seinem elastischen Kontaktelement (76) angeordnet sind.
  5. Schloßmechanismus gemäß Anspruch 4, dadurch gekennzeichnet, daß das Kontaktschütz (41) gegenüber dem Drehpunkt (56) eine Ausnehmung (49) aufweist, deren Mittelachse auf diejenige des Drehpunkts (56) ausgerichtet ist und durch die das Kontaktschütz (41) an einem Wellenzapfen (94) angelenkt werden kann, welcher vom Gehäuse des Überlastschalters getragen wird und den anderen beweglichen Kontakt (17, 29) sowie ein elastisches Kontaktelement (76) aufnehmen kann.
  6. Schloßmechanismus gemäß Anspruch 5, dadurch gekennzeichnet, daß die elastischen Kontaktelemente (76), die den beiden beweglichen Kontakten (17, 29) zugehören, verschiedene Kräfte besitzen.
  7. Schloßmechanismus gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß er eine Zugfeder (50) aufweist, die das Kontaktschütz (41) in Richtung geöffneter Kontakte zieht.
  8. Schloßmechanismus gemäß einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Wiedereinschalten der Sperrklinke (42), d.h. ihre Rückstellung in die geschlossene Position durch die Rückstellfeder (96) des Betätigungselementes (5) gewährleistet ist.
  9. Schloßmechanismus gemäß einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, daß das Kontaktschütz (41) aus gegossenem Kunststoffmaterial verwirklicht ist und einen tranversalen Kopf (48) aufweist, der als Abstützfläche für die Rückstellfeder (50) des Kontaktschütz (41) dient und vom Körper des Kontaktschütz durch ein V-förmiges Langloch (51) getrennt ist, welches die Verspreizungsrampe (54) aufweist, und daß der Körper (55) des Kontaktschütz (41) an seinen Seitenflächen den Drehpunkt bzw. die Ausnehmung sowie jeweils einen Zapfen (64) aufweist, der der Anlenkung des beweglichen Kontakts dient und sich näher am Kopf (48) als der Drehpunkt oder die Ausnehmung und in bezug auf diese letzere dem Betätigungselement (5) gegenüber befindet.
  10. Schloßmechanismus gemäß Anspruch 9, dadurch gekennzeichnet, daß die beweglichen Kontakte (17, 29) identisch und aus Metallteilen mit abgeflachtem Querschnitt gebildet sind und in einem verlängerten Teil (68) eine Hauptöffnung (69), eine Nebenöffnung (70), die um den Zapfen (64) in Eingriff gelangt, sowie einen seitlichen Vorsprung (71) aufweist, der für das elastische Kontaktelement (76) einen Abstützpunkt bildet, wobei der vergrößerte Teil (68) durch einen langgestreckten Teil (72) verlängert ist, der den elektrischen Kontaktpunkt und an seiner dem langgestreckten Teil (72) gegenüberliegenden Kante eine Kerbe (74) aufweist, die den zweiten Abstützpunkt für das elastische Kontaktelement (76) bildet.
  11. Schloßmechanismus gemäß Anspruch 10, dadurch gekennzeichnet, daß die Hauptöffnung (69) des vergrößerten Teils (68) der beweglichen Kontakte (29, 17) länglich ist.
  12. Schloßmechanismus gemäß Anspruch 3, dadurch gekennzeichnet, daß die Sperrklinke (42) und das Auslösemittel (43) in einem einzigen Stück aus gegossenem Kunststoffmaterial verwirklicht sind.
  13. Überlastschalter, dadurch gekennzeichnet, daß er einen Schloßmechanismus gemäß einem der Ansprüche 1 bis 12 umfaßt.
EP92440055A 1992-05-13 1992-05-13 Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert Expired - Lifetime EP0570647B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP92440055A EP0570647B1 (de) 1992-05-13 1992-05-13 Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert
DE92440055T DE69200059D1 (de) 1992-05-13 1992-05-13 Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert.
AT92440055T ATE102391T1 (de) 1992-05-13 1992-05-13 Schaltschloss fuer schutzschalter und schutzschalter, mit diesem integriert.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92440055A EP0570647B1 (de) 1992-05-13 1992-05-13 Schaltschloss für Schutzschalter und Schutzschalter, mit diesem integriert

Publications (2)

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EP0570647A1 EP0570647A1 (de) 1993-11-24
EP0570647B1 true EP0570647B1 (de) 1994-03-02

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EP (1) EP0570647B1 (de)
AT (1) ATE102391T1 (de)
DE (1) DE69200059D1 (de)

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FR2996678B1 (fr) * 2012-10-05 2014-10-31 Schneider Electric Ind Sas Dispositif de commande d'un appareil de protection electrique et appareil de protection electrique le comportant
CN103021748B (zh) * 2012-12-28 2015-04-22 常熟开关制造有限公司(原常熟开关厂） 大断口断路器
CN204118012U (zh) 2014-08-27 2015-01-21 浙江正泰电器股份有限公司 断路器的操作机构
CN106169398B (zh) * 2016-08-31 2018-07-20 厦门宏发开关设备有限公司 一种联锁机构、具备该联锁机构的断路器
CN107749366B (zh) * 2017-11-18 2024-01-26 库柏(宁波)电气有限公司 一种高压组合电器的传动机构
CN112103150B (zh) * 2020-08-06 2022-06-14 浙江百事宝电器股份有限公司 5g用液压电磁断路器及其解锁机构
CN114914129A (zh) * 2021-02-09 2022-08-16 施耐德电器工业公司 一种直流断路器
FR3121272B1 (fr) * 2021-03-26 2023-03-31 Schneider Electric Ind Sas Dispositif de protection électrique et tableau électrique comprenant un tel dispositif de protection
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Publication number Priority date Publication date Assignee Title
FR2589627B1 (fr) * 1985-10-31 1988-08-26 Merlin Gerin Mecanisme de commande pour disjoncteur electrique a basse tension
FR2605454B1 (fr) * 1986-10-20 1994-05-20 Merlin Et Gerin Mecanisme de commande d'un disjoncteur electrique miniature a rearmement automatique
EP0338930A1 (de) * 1988-04-22 1989-10-25 Hager Electro S.A. Lastschalter oder Differential-Lastschalter
FR2648615B1 (fr) * 1989-06-16 1991-09-13 Hager Electro Perfectionnements aux interrupteurs a coupure automatique, notamment aux disjoncteurs et disjoncteurs differentiels
ES2063331T3 (es) * 1989-08-08 1995-01-01 Felten & Guilleaume Ag Oester Interruptor de proteccion.

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ATE102391T1 (de) 1994-03-15
EP0570647A1 (de) 1993-11-24
DE69200059D1 (de) 1994-04-07

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