EP0147629B1 - Protective circuit breaker - Google Patents

Protective circuit breaker Download PDF

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Publication number
EP0147629B1
EP0147629B1 EP84114175A EP84114175A EP0147629B1 EP 0147629 B1 EP0147629 B1 EP 0147629B1 EP 84114175 A EP84114175 A EP 84114175A EP 84114175 A EP84114175 A EP 84114175A EP 0147629 B1 EP0147629 B1 EP 0147629B1
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EP
European Patent Office
Prior art keywords
lever
switch
pivot lever
handle
switch according
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
Application number
EP84114175A
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German (de)
French (fr)
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EP0147629A1 (en
Inventor
Udo Geus
Hajo Dipl.-Ing. Lindner
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.)
Lindner Fabrik Elektrischer Lampen und Apparate GmbH
Original Assignee
Lindner Fabrik Elektrischer Lampen und Apparate GmbH
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Publication date
Priority claimed from DE19833347097 external-priority patent/DE3347097A1/en
Application filed by Lindner Fabrik Elektrischer Lampen und Apparate GmbH filed Critical Lindner Fabrik Elektrischer Lampen und Apparate GmbH
Priority to AT84114175T priority Critical patent/ATE25789T1/en
Publication of EP0147629A1 publication Critical patent/EP0147629A1/en
Application granted granted Critical
Publication of EP0147629B1 publication Critical patent/EP0147629B1/en
Expired legal-status Critical Current

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    • 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

Definitions

  • the invention relates to a manually operated circuit breaker with the features of the preamble of claim 1.
  • Such a switch is known from DE-C-25 04 954 and has a switch lock which can be locked and unlocked by a handle designed as a rotary knob and on which a magnet and / or bimetallic release device acts.
  • the switching lock in turn essentially consists of two levers, namely a pivot lever and a release lever cooperating with it, both of which are mounted on a common axis of rotation fixed to the housing and can be pivoted about this, the pivot lever for transmitting the pivoting movement of the handle to an elastically coupled to it, is provided in the switch housing pivotable and interacting with a fixed contact movement contact arm.
  • the unlatching lever is actuated by the release devices and has at one end a latching point which serves to guide or release a transmission slide which acts as a knee joint and which transmits the force between the handle and the switching mechanism.
  • a hook-like projection on the unlatching lever engages over the transmission slide, which is designed as a wire bracket, and fixes it to a sliding inclined surface of the pivot lever, which is used for power transmission.
  • the pivoting lever and the unlatching lever move coaxially, so that the latching of the wire bracket end over the hook-like projection remains unchanged. If the release lever is rotated about the axis common to the two levers by means of a release device, the end of the wire bracket on the switch lock side is released so that it slides over the sliding inclined surface attached to the swivel lever, thereby rendering the support ineffective and the switch lock jumping into the off position.
  • the switching lock is therefore extremely sensitive to the smallest manufacturing tolerances, which unintentionally shift the compromise found between necessary, secure locking and easy triggering in one direction or the other.
  • the invention is based on the object of designing a circuit breaker in such a way that the latching between the transmission element interacting with the handle and the switching mechanism securely latches at the start of a switch-in pivoting movement without adversely affecting the speed of the unlatching, all parts being simple to produce and should be installable. This object is achieved by the characterizing features of claim 1.
  • the unlatching lever carries out a rotary-sliding movement in the housing, which leads to the latching element, which is designed as a latching lug, being closed.
  • the beginning of the switch-in swivel movement extends far beyond the movement path of the transmission bracket end to be latched, but withdraws more and more from the movement path in the course of the switch-in swivel movement, so that the mutual overlap causing the latching occurs at the end of the switch-on swivel movement, ie in the switch-on position a necessary minimum is reduced.
  • a further retraction movement of the locking lug, which ultimately causes the switch to be triggered, is only caused by the release elements (magnetic release, bimetallic release), which on the free end of the latch designed as a one-armed lever acts lever and rotates it further about its bearing axis arranged on the pivot lever.
  • the critical area of coverage of the elements to be mutually latched is thus only established immediately before or when the switch-on position is reached.
  • the switching behavior of the circuit breaker is further improved in that, according to claim 2, the contact arm is mounted exclusively on the pivot lever. Additional drive-transmitting means can be completely dispensed with, the contact arm is guided to the mating contact fixed to the housing in synchronism with the initial switch-on pivoting movement of the pivoting lever and lies there during. the further transfer of the handle to the switch-on position under high contact pressure.
  • the contact arm has an L-shaped angle bend at its fastening end, the end of which is articulated to the pivot lever by positive locking and the inside of the angle is acted upon by a compression spring in the direction of the pivot lever.
  • a compression spring in the direction of the pivot lever.
  • Self-cleaning of the contact surfaces is achieved by a sliding process that takes place between the fixed contact and the contactor during the last switch-on pivoting phase.
  • this is due to the fact that the contact arm not only rotates, but also rotates and rotates in the housing when it is lifted out of its form-fitting bed in the swivel lever.
  • a possibly welded contact point is not only torn open in the direction of movement of the contact arm during this movement sequence, but is also additionally broken open by the shear force acting transversely to the direction of movement.
  • the wall thickness (and thus the mass) of the unlatching lever can be further reduced without unnecessarily weakening the central area, which ensures secure contact with the projection.
  • the projecting web fulfills a double function, since it also serves as a counter bearing for a torsion spring, which presses the unlatching against the fixed housing projection.
  • Claims 11 and 12 teach a particularly advantageous arrangement of the parts interacting with the switch lock in relation to other switch parts, with claim 14 a quick return of the handle to the switch-off / release position to display the respective switching state is achieved.
  • the circuit breaker 1 consists essentially of a switch housing 2, from the upper side 3 of which a handle 4, designed as a rotary lever, projects for manual actuation of the circuit breaker.
  • the circuit breaker 1 In its interior 5, the circuit breaker 1 has a switch lock 6, which is arranged directly under the top 3 of the switch housing 2.
  • a magnetic release device 7 and a bimetal release device 8 are provided.
  • the pivoting end 12 of the bimetallic release device 8 is connected to a (movement) contact arm 13, which cooperates electrically with a fixed contact 14, which in turn is electrical with the magnetic release device 7, via a wire 11 to which the arc guide plate 39 is connected electrically and mechanically connected is.
  • the closed current path thus runs from the screw terminal 9 via the bimetallic release device 8, the wire 11, the contact arm 13, the fixed contact 14, and the magnetic release device 7 for screw terminal 10.
  • the switching lock 6 In order to control the movement of the contact arm 13, it is attached to the switching lock 6 with its fastening end 15.
  • This consists in particular of a pivot lever 17 rotatably mounted in the switch housing 2 by means of an axis 16 and a separately mounted release lever 18.
  • the latter is mounted on the pivot lever 17 at a distance from its axis 16 by means of a separate pivot axis 19 and forms a two-link chain with the pivot lever 17.
  • a torsion spring 20 which is guided around the axis of rotation 19 exerts a counterclockwise torque on the unlatching lever 18 with respect to the pivot lever 17.
  • the unlatching lever 18 is supported by means of a web 21 on a contact projection 22 which protrudes from the side wall of the housing against the switching mechanism 6.
  • a latching point in the form of a detent 24 projecting upwards from the unlatching lever 18, on which the switch-side end 25 of a transmission bracket 26 is locked, which is fastened with its second end 27 to the area of the handle 4 inside the housing that it is guided around the axis 28 of the handle 4 when it is pivoted and, in the switched-on position together with the inner part of the handle 4, forms a toggle lever which is locked beyond the dead center.
  • the switch lock end 25 of the transmission bracket is guided in a longitudinal groove 29 of the pivot lever 17 during the switch-on, switch-off and trigger movement.
  • the magnetic and bimetallic release devices 7, 8 act on the lower end 30 of the unlatching lever 18, which is designed as a one-armed lever, a plunger 31 of the magnetic release device 7 acting directly on the lower end and the movement of the pivoting end 12 of the bimetallic release device 8 by means of a connecting slide 32 lower end 30 of the release lever 18 is transmitted.
  • the fastening end 15 of the contact arm 13 is provided with an L-shaped bend 33 which is pressed into a form-fitting recess 35 of the pivot lever 17 by means of a compression spring 34.
  • An extinguishing chamber antechamber 36 is provided in the lower area of the circuit breaker and is delimited on one side by an extinguishing chamber 37.
  • An arc guide plate 39 leads from the underside 38 of the quenching chamber 37 in the direction of the switch lock and forms a stop 40 for the contact arm 13 which is in the release position.
  • An adjusting device 42 provided with an adjusting screw 41 is used to adjust the bimetallic release device 8.
  • the second end 27 of the transmission bracket 26 has migrated beyond the straight connecting line (dead center line) between the center of the axis 28 and the end 25 and thus exerts a clockwise torque on the handle, which is caused by the force the compression spring 34 is generated via the latching point (locking lug 24).
  • the locking lug 24 releases the end 25 of the transmission bracket 26, so that the two levers (swivel lever 17, unlatching lever 18) snap back suddenly and the Wegkon tact area between contact arm 13 and fixed contact 14 is torn. A resulting arc is dissipated into the quenching chamber 37 via the arc guide plate 39. Due to the prevailing spring forces of the springs 34 and a further torsion spring 44 located in the handle 4, the switching lock 6 will return to its switch-off position in time before the handle 4. The handle 4, which rotates somewhat more slowly, pulls the transmission bracket 26 back into the switched-off position, its end 25 sliding over a sliding inclined surface 43 on the rear side of the locking lug 24 and pressing it briefly downward against the force of the torsion spring 20.

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  • Breakers (AREA)

Description

Die Erfindung betrifft einen manuell betätigbaren Schutzschalter mit den Merkmalen des Oberbegriffes des Anspruches 1.The invention relates to a manually operated circuit breaker with the features of the preamble of claim 1.

Ein derartiger Schalter ist aus DE-C-25 04 954 bekannt und weist ein durch eine als Drehknebel ausgebildete Handhabe ver- und enfriegetbares Schaltschloß auf, auf das eine Magnet- und/oder Bimetallauslösevorrichtung einwirkt. Das Schaltschloß besteht seinerseits im wesentlichen aus zwei Hebeln, nämlich einem Schwenkhebel und einem mit diesem zusammenwirkenden Entklinkungshebel, die beide auf einer gemeinsamen gehäusefesten Drehachse gelagert und um diese verschwenkbar sind, wobei der Schwenkhebel zur Übertragung der Schwenkbewegung der Handhabe auf einen elastisch an ihn angekoppelten, im Schaltergehäuse verschwenkbaren und mit einem Festkontakt zusammenwirkenden Bewegungskontaktarm vorgesehen ist. Der Entklinkungshebel wird von den Auslösevorrichtungen betätigt und weist an seinem einen Ende eine Verklinkungsstelle auf, die zur Führung bzw. Freigabe eines als Kniegelenk wirkenden Übertragungsschiebers dient, der die Kraftübertragung zwischen Handhabe und Schaltschloß vollzieht.Such a switch is known from DE-C-25 04 954 and has a switch lock which can be locked and unlocked by a handle designed as a rotary knob and on which a magnet and / or bimetallic release device acts. The switching lock in turn essentially consists of two levers, namely a pivot lever and a release lever cooperating with it, both of which are mounted on a common axis of rotation fixed to the housing and can be pivoted about this, the pivot lever for transmitting the pivoting movement of the handle to an elastically coupled to it, is provided in the switch housing pivotable and interacting with a fixed contact movement contact arm. The unlatching lever is actuated by the release devices and has at one end a latching point which serves to guide or release a transmission slide which acts as a knee joint and which transmits the force between the handle and the switching mechanism.

Bei dem gattungsgemäßen Schalter übergreift ein hakenartiger Vorsprung am Entklinkungshebei den als Drahtbügel ausgebildeten Übertragungsschiebec und fixiert ihn an einer zur Kraftübertragung dienenden Aufgleitschrägfläche des Schwenkhebels. Während des manuellen Ein-und Ausschaltvorganges bewegen sich Schwenkhebel und Entklinkungshebel koaxial, so daß die Verklinkung des Drahtbügelendes über den hakenartigen Vorsprung unverändert erhalten bleibt. Wird über eine Auslösevorrichtung der Entklinkungshebel gegenüber dem Schwenkhebel um die beiden Hebeln gemeinsame Achse verdreht, so wird das schaltschloßseitige Ende des Drahtbügels freigegeben, so daß es über die am Schwenkhebel angebrachte Aufgleitschrägfläche gleitet und dadurch die Abstützung unwirksam wird und das Schaltschloß in die Ausschaltstellung springt. Dieser Bewegungsablauf hat den Nachteil, daß das Schaltschloß nach Entklinkung sich nicht von Anfang an sprunghaft in die Ausschaltstellung bewegen kann. Die Ausschaltschwenkbewegung des Schaltschlosses wird vielmehr anfangs behindert durch das notwendige Aufgleiten des dem Schaltschloß zugewandten Endes des Drahtbügels auf der Aufgleitschrägfläche. Dieses notwendige Aufgleiten wird zusätzlich noch dadurch behindert, daß das Ende des Drahtbügels durch eine Zugfeder in die der Bewegungsrichtung entgegengesetzte Richtung gezogen wird. Dadurch entsteht eine unerwünschte Zeitverzögerung zwischen dem Entklinkungszeitpunkt und dem Abheben des Kontaktarmes. Dies ist insbesonders bei Kurzschlußabschaltungen nachteilig. Der Drahtbügel ist durch diese Zugfeder derartig vorgespannt, daß er in Ausschaltstellung wieder von dem hakenartigen Vorsprung des Entklinkungshebels eingefangen wird.In the switch of the generic type, a hook-like projection on the unlatching lever engages over the transmission slide, which is designed as a wire bracket, and fixes it to a sliding inclined surface of the pivot lever, which is used for power transmission. During the manual switch-on and switch-off process, the pivoting lever and the unlatching lever move coaxially, so that the latching of the wire bracket end over the hook-like projection remains unchanged. If the release lever is rotated about the axis common to the two levers by means of a release device, the end of the wire bracket on the switch lock side is released so that it slides over the sliding inclined surface attached to the swivel lever, thereby rendering the support ineffective and the switch lock jumping into the off position. This sequence of movements has the disadvantage that the switch lock cannot suddenly jump to the switch-off position from the beginning after being unlatched. Rather, the switch-off pivoting movement of the switch lock is initially hindered by the necessary sliding of the end of the wire bracket facing the switch lock on the sloping surface. This necessary sliding is additionally hindered by the fact that the end of the wire bracket is pulled by a tension spring in the direction opposite to the direction of movement. This creates an undesirable time delay between the time of unlatching and the lifting of the contact arm. This is particularly disadvantageous in the case of short-circuit shutdowns. The wire bracket is biased by this tension spring in such a way that it is caught again in the off position by the hook-like projection of the unlatching lever.

An diese Verklinkungsstelle werden zwei entgegengerichtete Forderungen gestellt : Zum einen muß die Verklinkung des Drahtbügels bei Beginn der Einschaltbewegung so sicher sein, daß es beim Einschaltvorgang nicht zu einem wirkungslosen « Uberratschen des Drahtbügels kommt, zum anderen muß die Verklinkung in der Einschaltstellung des Schaltschlosses so kritisch sein, daß dieses schon durch verhältnismäßig kleine Kräfte ausgelöst wird.Two opposite demands are placed on this latching point: Firstly, the latching of the wire bracket at the start of the switch-on movement must be so secure that there is no ineffective ratcheting of the wire bracket during the switching-on process, and secondly the latching in the switch-on position of the key switch must be so critical be that this is triggered by relatively small forces.

In der beschriebenen Ausführungsform, bei der Entklinkungshebel und Schwenkhebel um eine gemeinsame Drehachse verschwenken, ist das Schaltschloß daher äußerst empfindlich gegen kleinste Fertigungstoleranzen, die den gefundenen Kompromiß zwischen notwendiger, sicherer Verrastung und leichter Auslösbarkeit unbeabsichtigt in die eine oder andere Richtung verschieben.In the described embodiment, in which the unlatching lever and pivoting lever pivot about a common axis of rotation, the switching lock is therefore extremely sensitive to the smallest manufacturing tolerances, which unintentionally shift the compromise found between necessary, secure locking and easy triggering in one direction or the other.

Zudem ist der indirekte Antrieb des beweglichen Kontaktarms über eine als Kniehebel wirkende, mit innenliegendem Drahtbügel geführte Schraubendruckfeder kompliziert und störanfällig.In addition, the indirect drive of the movable contact arm via a helical compression spring, which acts as a toggle lever and is guided with an internal wire bracket, is complicated and prone to failure.

Der Erfindung liegt die Aufgabe zugrunde, einen Schutzschalter derart auszubilden, daß die Verklinkung zwischen dem mit der Handhabe zusammenwirkenden Übertragungselement und dem Schaltschloß bei Beginn einer Einschalt- schwenkbewegung sicher verrastet, ohne die Geschwindigkeit der Entklinkung negativ zu beeinflussen, wobei alle Teile auf einfache Weise herstellbar und einbaubar sein sollen. Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.The invention is based on the object of designing a circuit breaker in such a way that the latching between the transmission element interacting with the handle and the switching mechanism securely latches at the start of a switch-in pivoting movement without adversely affecting the speed of the unlatching, all parts being simple to produce and should be installable. This object is achieved by the characterizing features of claim 1.

Als Kern der Erfindung wird angesehen, daß beim Einschaltvorgang zwischen dem Entklinkungshebel und dem Schwenkhebel eine Relativbewegung vollzogen wird, die kausal auf eine nicht koaxiale Lagerung der beiden Hebel zurückgeht. Im Gegensatz zu der koaxialen Drehbewegung der beiden Hebel nach dem Stand der Technik vollführt der Entklinkungshebel eine Dreh-Schiebebewegung im Gehäuse, die dazu führt, daß das als Rastnase ausgebildete Verklinkungselement zu. Beginn der Einschalt- schwenkbewegung weit über die Bewegungsbahn des zu verklinkenden Übertragungsbügelendes hinausragt, sich im Verlaufe der Einschalt- schwenkbewegung aber mehr und mehr aus der Bewegungsbahn zurückzieht, so daß die gegenseitige, die Verklinkung bewirkende Überlappung am Ende der Einschaltschwenkbewegung, d. h. in Einschaltstellung, auf ein notwendiges Minimum reduziert ist. Eine weitere Rückzugsbewegung der Rastnase, die letztlich die Auslösung des Schalters verursacht, wird ausschließlich durch die Auslöseelemente (Magnetauslöser, Bimetallauslöser) verursacht, der auf das Freiende des als einarmiger Hebel ausgebildeten Verklinkungshebels einwirkt und diesen um seine am Schwenkhebel angeordnete Lagerachse weiterdreht. Der kritische Überdeckungsbereich der gegenseitig zu verklinkenden Elemente wird somit erst unmittelbar vor oder bei Erreichen der Einschaltendstellung hergestellt.It is regarded as the essence of the invention that a relative movement is carried out between the unlatching lever and the pivoting lever during the switching-on process, which is causally due to a non-coaxial mounting of the two levers. In contrast to the coaxial rotary movement of the two levers according to the prior art, the unlatching lever carries out a rotary-sliding movement in the housing, which leads to the latching element, which is designed as a latching lug, being closed. The beginning of the switch-in swivel movement extends far beyond the movement path of the transmission bracket end to be latched, but withdraws more and more from the movement path in the course of the switch-in swivel movement, so that the mutual overlap causing the latching occurs at the end of the switch-on swivel movement, ie in the switch-on position a necessary minimum is reduced. A further retraction movement of the locking lug, which ultimately causes the switch to be triggered, is only caused by the release elements (magnetic release, bimetallic release), which on the free end of the latch designed as a one-armed lever acts lever and rotates it further about its bearing axis arranged on the pivot lever. The critical area of coverage of the elements to be mutually latched is thus only established immediately before or when the switch-on position is reached.

Während der beim Ein-, Aus- und Abschalten möglichen Bewegungsabläufe ist das zu verklinkende Ende des Übertragungsbügels immer in einer Längsnut des Schwenkhebels sicher geführt, so daß auf auf den Übertragungsbügel einwirkende zusätzliche Übertragungselemente wie z. B. Federn u. dgl. gänzlich verzichtet werden kann, die zu einer zusätzlichen mechanischen Belastung des Verklinkungsbereiches führen. Der Bewegungsablauf bei der Ausschaltschwenkbewegung hat im Vergleich zum Stand der Technik den Vorteil, daß bereits vom Entklinkungszeitpunkt an die Schwenkbewegung des Schaltschlosses sprunghaft in die Ausschaltstellung ungehindert erfolgen kann, was zu einer denkbar geringen Auslösezeit des Schutzschalters führt und sich insbesondere bei Kurzschlußabschaltungen vorteilhaft auswirkt.During the possible movements when switching on, off and off, the end of the transmission bracket to be latched is always securely guided in a longitudinal groove of the pivoting lever, so that additional transmission elements acting on the transmission bracket, such as, for. B. feathers u. Like. Can be completely dispensed with, which lead to an additional mechanical load on the latching area. The sequence of movements during the switch-off pivoting movement has the advantage over the prior art that the pivoting movement of the switch lock can jump to the switch-off position unhindered from the time of unlatching, which leads to a conceivably short tripping time of the circuit breaker and is particularly advantageous in the case of short-circuit disconnections.

Das Schaltverhalten des Schutzschalters wird weiter dadurch verbessert, daß gemäß Anspruch 2 der Kontaktarm ausschließlich am Schwenkhebel gelagert ist. Auf zusätzliche antriebsübertragende Mittel kann vollständig verzichtet werden, der Kontaktarm wird synchron mit der anfänglichen Einschalt-Schwenkbewegung des Schwenkhebels zum gehäusefesten Gegenkontakt geführt und liegt dort während. der weiteren Überführung der Handhabe in die Einschaltendstellung bereits unter hohem Kontaktdruck an.The switching behavior of the circuit breaker is further improved in that, according to claim 2, the contact arm is mounted exclusively on the pivot lever. Additional drive-transmitting means can be completely dispensed with, the contact arm is guided to the mating contact fixed to the housing in synchronism with the initial switch-on pivoting movement of the pivoting lever and lies there during. the further transfer of the handle to the switch-on position under high contact pressure.

Vorteilhafterweise hat der Kontaktarm an seinem Befestigungsende eine L-förmige Winkelabbiegung, deren Ende mit dem Schwenkhebel durch Formschluß gelenkig verbunden ist und deren Winkelinnenseite durch eine Druckfeder in Richtung des Schwenkhebels beaufschlagt wird. Im Moment des Schließens der beiden Kontakte wird die Winkelabbiegung aus ihrem Formschlußbett gegen die Kraft der Druckfeder etwas ausgehoben und wirkt wie ein federbelastetes Gelenk zwischen Kontaktarm und Schwenkhebel.Advantageously, the contact arm has an L-shaped angle bend at its fastening end, the end of which is articulated to the pivot lever by positive locking and the inside of the angle is acted upon by a compression spring in the direction of the pivot lever. At the moment the two contacts are closed, the angular deflection is lifted out of its form-fitting bed somewhat against the force of the compression spring and acts as a spring-loaded joint between the contact arm and the pivot lever.

Eine Selbstreinigung der Kontaktflächen wird durch einen Gleitvorgang erzielt, der während der letzten Einschaltschwenk-Phase zwischen dem Festkontakt und dem Kontaktar!abläuft. Kausal ist dies darauf zurückzuführen, daß der Kontaktarm im Moment seines Aushebens aus seinem Formschlußbett im Schwenkhebel nicht nur eine Drehbewegung, sondern eine Dreh-Kippbewegung im Gehäuse vollzieht.Self-cleaning of the contact surfaces is achieved by a sliding process that takes place between the fixed contact and the contactor during the last switch-on pivoting phase. Causally, this is due to the fact that the contact arm not only rotates, but also rotates and rotates in the housing when it is lifted out of its form-fitting bed in the swivel lever.

Der Gleitvorgang an der Kontaktfläche zwischen Festkontakt und Kontaktarm ist auch bei der Abschaltung vorteilhaft. Eine eventuell verschweißte Kontaktstelle wird bei diesem Bewegungsablauf nicht nur in Bewegungsrichtung des Kontaktarms aufgerissen, sondern auch zusätzlich durch die quer zur Bewegungsrichtung wirkende Scherkraft aufgebrochen.The sliding process on the contact surface between the fixed contact and the contact arm is also advantageous when switching off. A possibly welded contact point is not only torn open in the direction of movement of the contact arm during this movement sequence, but is also additionally broken open by the shear force acting transversely to the direction of movement.

Durch die Aufgleitschrägfläche gemäß Anspruch 7 ist sichergestellt, daß die Handhabe bei ihrer Rücksprungbewegung in die Ausschaltstellung nicht unnötig gehemmt wird. Anspruch 8 lehrt eine besonders vorteilhafte « kritische Endstellung der Rastnase bezogen auf die die Bewegungsbahn des Übertragungsbügels festlegende Längsnut im Schwenkhebel.The Aufgleitschlägfläche according to claim 7 ensures that the handle is not unnecessarily inhibited during its return movement into the switch-off position. Claim 8 teaches a particularly advantageous «critical end position of the locking lug in relation to the longitudinal groove in the pivoting lever which defines the movement path of the transmission bracket.

Durch den im Mittelbereich des Entklinkungshebels seitlich abstehenden Steg kann die Wandstärke (und damit die Masse) des Entklinkungshebels weiter reduziert werden, ohne den für eine sichere Anlage am Anlagevorsprung sorgenden Mittelbereich unnötig zu schwächen. Durch Anspruch 10 erfüllt der abstehende Steg eine Doppelfunktion, da er gleichzeitig als Gegenlager für eine Drehfeder dient, die den Entklinkungshebei gegen den gehäusefesten Anlagevorsprung drückt. Ansprüche 11 und 12 lehren eine besonders vorteilhafte Anordnung der mit dem Schaltschloß zusammenwirkenden Teile bezogen auf übrige Schalterteile, mit Anspruch 14 wird ein schnelles Rückführen der Handhabe in die Ausschalt/Auslösestellung zur Anzeige des jeweiligen Schaltzustandes erzielt.Due to the web protruding laterally in the central area of the unlatching lever, the wall thickness (and thus the mass) of the unlatching lever can be further reduced without unnecessarily weakening the central area, which ensures secure contact with the projection. By claim 10, the projecting web fulfills a double function, since it also serves as a counter bearing for a torsion spring, which presses the unlatching against the fixed housing projection. Claims 11 and 12 teach a particularly advantageous arrangement of the parts interacting with the switch lock in relation to other switch parts, with claim 14 a quick return of the handle to the switch-off / release position to display the respective switching state is achieved.

Die Erfindung ist an Hand eines Ausführungs- . beispieles in der Zeichnung näher erläutert. Es zeigt

  • Figur 1 eine Seitenansicht der Funktionsteile eines Schalters in ausgeschalteter Stellung (teilweise im Schnitt),
  • Figur 2 eine Ansicht gemäß Fig. 1 in mittlerer Bewegungsstellung,
  • Figur 3 eine Ansicht gemäß Fig. 1 in Einschaltstellung,
  • Figur 4 eine Ansicht gemäß Fig. 1 in ausgelöster Stellung, wobei die Handhabe in Einschaltstellung festgehalten wird.
The invention is based on an embodiment. example explained in more detail in the drawing. It shows
  • FIG. 1 shows a side view of the functional parts of a switch in the switched-off position (partly in section),
  • FIG. 2 shows a view according to FIG. 1 in the middle movement position,
  • FIG. 3 shows a view according to FIG. 1 in the switched-on position,
  • 4 shows a view according to FIG. 1 in the triggered position, the handle being held in the switched-on position.

Aufbau des SchutzschaltersStructure of the circuit breaker

Der Schutzschalter 1 besteht im wesentlichen aus einem Schaltergehäuse 2, aus dessen Oberseite 3 eine als Drehhebel ausgebildete Handhabe 4 zur manuellen Betätigung des Schutzschalters vorsteht. In seinem Innenraum 5 weist der Schutzschalter 1 ein Schaltschloß 6 auf, das unmittelbar unter der Oberseite 3 des Schaltergehäuses 2 angeordnet ist. Weiterhin sind eine Magnetauslösevorrichtung 7 sowie eine Bimetallauslösevorrichtung 8 vorgesehen. An der Gehäuseaußenseite befinden sich darüber hinaus Anschiußetemente in Form. von Schraubklemmen 9, 10, wobei die Schraubklemme 9 elektrisch mit der Bitmetallauslösevorrichtung 8 und die Schuraubklemme 10 mit der Magnetauslösevorrichtung 7 verbunden sind. Über eine Litze 11, mit der das Lichtbogenleitblech 39 elektrisch und mechanisch verbunden ist, ist das Schwenkende 12 der Bimetallauslösevorrichtung 8 mit einem (Bewe- gungs-)Kontaktarm 13 verbunden, der mit einem Festkontakt 14 elektrisch zusammenwirkt, der seinerseits mit der Magnetauslösevorrichtung 7 elektrisch verbunden ist. Der geschlossene Strompfad läuft somit von der Schraubklemme 9 über Bimetallauslösevorrichtung 8, Litze 11, Kontaktarm 13, Festkontakt 14, Magnetauslösevorrichtung 7 zur Schraubklemme 10.The circuit breaker 1 consists essentially of a switch housing 2, from the upper side 3 of which a handle 4, designed as a rotary lever, projects for manual actuation of the circuit breaker. In its interior 5, the circuit breaker 1 has a switch lock 6, which is arranged directly under the top 3 of the switch housing 2. Furthermore, a magnetic release device 7 and a bimetal release device 8 are provided. In addition, there are connection elements in the form on the outside of the housing. of screw terminals 9, 10, wherein the screw terminal 9 is electrically connected to the bit metal release device 8 and the crawler pin 10 is connected to the magnetic release device 7. The pivoting end 12 of the bimetallic release device 8 is connected to a (movement) contact arm 13, which cooperates electrically with a fixed contact 14, which in turn is electrical with the magnetic release device 7, via a wire 11 to which the arc guide plate 39 is connected electrically and mechanically connected is. The closed current path thus runs from the screw terminal 9 via the bimetallic release device 8, the wire 11, the contact arm 13, the fixed contact 14, and the magnetic release device 7 for screw terminal 10.

Um die Bewegung des Kontaktarms 13 zu steuern, ist dieser mit seinem Befestigungsende 15 am Schaltschloß 6 angebracht. Dieses besteht im einzelnen aus einem im Schaltergehäuse 2 mittels einer Achse 16 drehgelagerten Schwenkhebel 17 sowie einem gesondert gelagerten Entklinkungshebel 18. Letzterer ist mittels einer gesonderten Drehachse 19 am Schwenkhebel 17 mit Abstand von dessen Achse 16 gelagert und bildet mit dem Schwenkhebel 17 eine Zweigelenkkette. Durch eine um die Drehachse 19 herumgeführte Drehfeder 20 wird auf den Entklinkungshebei 18 gegenüber dem Schwenkhebel 17 ein gegen den Uhrzeigersinn gerichtetes Drehmoment ausgeübt. Dadurch stützt sich der Entklinkungshebel 18 mittels eines Steges 21 an einem Anlagevorsprung 22 ab, der von einer Gehäuseseitenwandung gegen das Schaltschloß 6 vorsteht. An der Oberseite 23 des Schaltschlosses 6 ist eine Verklinkungsstelle in Form einer vom Entklinkungshebel 18 nach oben abstehenden Rastnase 24 vorgesehen, an welcher das schaltschloßeitige Ende 25 eines Übertragungsbügels 26 verrastet, der mit seinem zweiten Ende 27 am gehäuseinneren Bereich der Handhabe 4 - derart befestigt ist, daß es bei deren Verschwenkung um die Achse 28 der Handhabe 4 herumgeführt wird und in Einschaltstellung zusammen mit dem Innenteil der Handhabe 4 einen über den Totpunkt hinaus verrasteten Kniehebel bildet. Das schaltschloßseitige Ende 25 des Übertragungsbügels ist in einer Längsnut 29 des Schwenkhebels 17 bei der Einschalt-, Ausschalt-und Auslösebewegung geführt.In order to control the movement of the contact arm 13, it is attached to the switching lock 6 with its fastening end 15. This consists in particular of a pivot lever 17 rotatably mounted in the switch housing 2 by means of an axis 16 and a separately mounted release lever 18. The latter is mounted on the pivot lever 17 at a distance from its axis 16 by means of a separate pivot axis 19 and forms a two-link chain with the pivot lever 17. A torsion spring 20 which is guided around the axis of rotation 19 exerts a counterclockwise torque on the unlatching lever 18 with respect to the pivot lever 17. As a result, the unlatching lever 18 is supported by means of a web 21 on a contact projection 22 which protrudes from the side wall of the housing against the switching mechanism 6. On the upper side 23 of the switch lock 6 there is a latching point in the form of a detent 24 projecting upwards from the unlatching lever 18, on which the switch-side end 25 of a transmission bracket 26 is locked, which is fastened with its second end 27 to the area of the handle 4 inside the housing that it is guided around the axis 28 of the handle 4 when it is pivoted and, in the switched-on position together with the inner part of the handle 4, forms a toggle lever which is locked beyond the dead center. The switch lock end 25 of the transmission bracket is guided in a longitudinal groove 29 of the pivot lever 17 during the switch-on, switch-off and trigger movement.

Die Magnet- und Bimetallauslösevorrichtungen 7, 8 wirken auf das untere Ende 30 des als einarmiger Hebel ausgebildeten Entklinkungshebels 18 ein, wobei ein Stößel 31 der Magnetauslösevorrichtung 7 das untere Ende unmittelbar beaufschlagt und die Bewegung des Schwenkendes 12 der Bimetallauslösevorrichtung 8 mittels eines Verbindungsschiebers 32 auf das untere Ende 30 des Entklinkungshebels 18 übertragen wird.The magnetic and bimetallic release devices 7, 8 act on the lower end 30 of the unlatching lever 18, which is designed as a one-armed lever, a plunger 31 of the magnetic release device 7 acting directly on the lower end and the movement of the pivoting end 12 of the bimetallic release device 8 by means of a connecting slide 32 lower end 30 of the release lever 18 is transmitted.

Das Befestigungsende 15 des Kontaktarms 13 ist mit einer L-förmigen Abbiegung 33 versehen, die mittels einer Druckfeder 34 in eine Formschlußausnehmung 35 des Schwenkhebels 17 hineingedrückt wird.The fastening end 15 of the contact arm 13 is provided with an L-shaped bend 33 which is pressed into a form-fitting recess 35 of the pivot lever 17 by means of a compression spring 34.

Im unteren Bereich des Schutzschalters ist ein Löschkammervorraum 36 vorgesehen, der einseitig von einer Löschkammer 37 begrenzt wird. Von der Unterseite 38 der Löschkammer 37 führt ein Lichtbogenleitblech 39 in Richtung des Schaltschlosses ab und bildet einen Anschlag 40 für den in Auslösestellung befindlichen Kontaktarm 13.An extinguishing chamber antechamber 36 is provided in the lower area of the circuit breaker and is delimited on one side by an extinguishing chamber 37. An arc guide plate 39 leads from the underside 38 of the quenching chamber 37 in the direction of the switch lock and forms a stop 40 for the contact arm 13 which is in the release position.

Eine mit einer Justierschraube 41 versehene Justiervorrichtung 42 dient zur Einstellung der Bimetallauslösevorrichtung 8.An adjusting device 42 provided with an adjusting screw 41 is used to adjust the bimetallic release device 8.

Funktion des Schutzschalters :Function of the circuit breaker:

Bei der in Fig. 1 gezeigten ausgeschalteten Stellung befindet sich die Handhabe 4 in einer nach links gekippten Stellung, wodurch der Übertragungsbügel 26 gegenüber der Rastnase 24 nach rechts zurückgezogen ist. Die Rastnase 24 überdeckt in dieser Anfangsstellung die Breite der Längsnut 29 vollständig, so daß es im Moment der Beaufschlagung der Rastnase 24 durch das Ende 25 des Übertragungsbügels 26 zu einer sicheren Verklinkung kommt. Wird die Handhabe 4 in die Einschaltstellung verbracht (über die in Fig. 2 gezeigte Mittelstellung zur in Fig. 3 gezeigten Endstellung), so laufen im Schaltschloß folgende Bewegungen ab :

  • a) Der Schwenkhebel 17 wird um seine Achse 16 entgegen dem Uhrzeigersinn und der Kraft der Druckfeder 34 verdreht und nimmt dabei den auf der Drehachse 19 gelagerten Entklinkungshebel 18 mit, der auf Grund seiner Anlage am Anlagevorsprung 22 eine nach unten gerichtete Schiebe-Drehbewegung vollführt. Diese Reiativbewegung zwischen Schwenkhebel 17 und Entklinkungshebel 18 führt dazu, daß sich die Rastnase 24 bei der Einschaltschwenkbewegung kontinuierlich. aus der Längsnut 29 zurückzieht, bis diese in Einschaltstellung von der Rastnase nur noch teilweise überdeckt wird. Diese Stellung der Rastnase 24 wird als kritische Auslösestellung bezeichnet.
  • b) Nachdem der Schwenkhebel 17 etwa seine halbe Drehbewegung durchlaufen hat, liegt der Kontaktarm 13 bereits am Festkontakt 14 an. In dieser Anlagestellung vollführt er eine nach unten gerichtete Schiebe-Drehbewegung um das Ende der L-förmigen Abbiegung 33, das sich an entsprechender Stelle der Formschlußausnehmung 35 abstützt. Je weiter die Handhabe in die Einschaltstellung verschwenkt wird, desto mehr hebt sich gegen die Kraft der Feder 34 die L-förmige Abbiegung respektive das Befestigungsende 15 des Kontaktarms 13 aus der Formschlußausnehmung aus, wodurch es zur nach unten gerichteten Dreh-Schiebebewegung kommt. Somit wird beim Einschalten durch gegenseitige gleitende Beaufschlagung zwischen Kontaktarm 13 und versilberter Anlagefläche des Festkontakts 14 jeweils eine Kontaktreinigung vorgenommen.
In the switched-off position shown in FIG. 1, the handle 4 is in a position tilted to the left, as a result of which the transmission bracket 26 is retracted to the right relative to the latching lug 24. In this initial position, the locking lug 24 completely covers the width of the longitudinal groove 29, so that when the locking lug 24 is acted upon by the end 25 of the transmission bracket 26, a secure latching occurs. If the handle 4 is brought into the switch-on position (via the middle position shown in FIG. 2 to the end position shown in FIG. 3), the following movements take place in the switch lock:
  • a) The pivot lever 17 is rotated counterclockwise about its axis 16 and the force of the compression spring 34 and takes with it the unlatching lever 18 mounted on the axis of rotation 19, which performs a downward sliding rotary movement due to its abutment on the projecting projection 22. This serial movement between the pivot lever 17 and the unlatching lever 18 leads to the latch 24 continuously during the switch-on pivoting movement. withdraws from the longitudinal groove 29 until it is only partially covered by the locking lug in the switched-on position. This position of the detent 24 is referred to as the critical release position.
  • b) After the pivot lever 17 has undergone approximately half its rotary movement, the contact arm 13 is already in contact with the fixed contact 14. In this contact position, it performs a downward sliding rotary movement around the end of the L-shaped bend 33, which is supported at the corresponding point in the form-fitting recess 35. The further the handle is pivoted into the switch-on position, the more the L-shaped bend or the fastening end 15 of the contact arm 13 lifts out of the form-fitting recess against the force of the spring 34, which results in the downward rotating sliding movement. Thus, when switching on, a contact cleaning is carried out by mutual sliding action between the contact arm 13 and the silvered contact surface of the fixed contact 14.

Bei dem in Fig. 3 gezeigten Ausführungsbeispiel ist das zweite Ende 27 des Übertragungsbügels 26 über die gerade Verbindungslinie (Totpunktlinie) zwischen Mittelpunkt der Achse 28 und dem Ende 25 hinausgewandert und übt somit auf die Handhabe ein im Uhrzeigersinn gerichtetes Drehmoment aus, das durch die Kraft der Druckfeder 34 über die Verklinkungsstelle (Rastnase 24) erzeugt wird.In the embodiment shown in Fig. 3, the second end 27 of the transmission bracket 26 has migrated beyond the straight connecting line (dead center line) between the center of the axis 28 and the end 25 and thus exerts a clockwise torque on the handle, which is caused by the force the compression spring 34 is generated via the latching point (locking lug 24).

Wird durch eine der Auslösevorrichtungen 7, 8 das untere Ende 30 des Entklinkungshebels 18 nur geringfügig beaufschlagt, so gibt die Rastnase 24 das Ende 25 des Übertragungsbügels 26 frei, so daß es zu einem schlagartigen Zurückschnellen der beiden Hebel (Schwenkhebel 17, Entklinkungshebel 18) kommt und die Schaltkontaktfläche zwischen Kontaktarm 13 und Festkontakt 14 aufgerissen wird. Ein entstehender Lichtbogen wird über das Lichtbogenleitblech 39 in die Löschkammer 37 abgeleitet. Auf Grund der herrschenden Federkräfte der Federn 34 und einer in der Handhabe 4 befindlichen weiteren Drehfeder 44 wird das Schaltschloß 6 zeitlich vor der Handhabe 4 in seine Ausschaltstellung zurückkehren. Die etwas langsamer sich drehende Handhabe 4 zieht den Übertragungsbügel 26 in die Ausschaltstellung zurück, wobei dessen Ende 25 über eine Aufgleitschrägfläche 43 auf der Rückseite der Rastnase 24 gleitet und diese kurz nach unten gegen die Kraft der Drehfeder 20 wegdrückt.If the lower end 30 of the unlatching lever 18 is only slightly acted upon by one of the triggering devices 7, 8, the locking lug 24 releases the end 25 of the transmission bracket 26, so that the two levers (swivel lever 17, unlatching lever 18) snap back suddenly and the Schaltkon tact area between contact arm 13 and fixed contact 14 is torn. A resulting arc is dissipated into the quenching chamber 37 via the arc guide plate 39. Due to the prevailing spring forces of the springs 34 and a further torsion spring 44 located in the handle 4, the switching lock 6 will return to its switch-off position in time before the handle 4. The handle 4, which rotates somewhat more slowly, pulls the transmission bracket 26 back into the switched-off position, its end 25 sliding over a sliding inclined surface 43 on the rear side of the locking lug 24 and pressing it briefly downward against the force of the torsion spring 20.

Claims (14)

1. Manually operable protective switch having the following features :
the protective switch (1) has a magnetic and/or bimetallic release device (7, 8) acting on a latch (6) which can be locked and unlocked with a handle (4),
the latch (6) essentially consists of a pivot lever (17) rotatably mounted in a switch housing (2) and an unlatching lever (18) interacting with this pivot lever (17),
the pivot lever (17) transmits the pivoting movement of the handle (4) to a contact arm (13) which is elastically coupled to the pivot lever (17), is pivotable in the switch housing (2) and interacts with a fixed contact (14),
the unlatching lever (18) is acted upon by the magnetic and/or bimetallic release device (7, 8) and is provided with a latching point for a transmission stirrup (26) acting in the manner of a toggle joint between the handle (4) and the latch (6), characterized by the following features :
the unlatching lever (18) is made as a lever lying parallel next to the pivot lever (17), is mounted on a separate rotary axis (19) arranged on the pivot lever (17) at a distance from its axis (16) and forms, together with the pivot lever (17), a double- link chain,
the unlatching lever (18), in its centre area (web 21), is supported on an abutment projection (22) which is fixed to the housing and is arranged at a distance from the axis (16) of the pivot lever (17),
the transmission stirrup (26), with its end (25) on the latch side, is guided in restrained manner in the direction of action in a longitudinal slot (29) of the pivot lever (17) and at the same time acts directly on the latching point made as an upwardly protruding detent (24) of the unlatching lever (18),
the detent (24), during the switch-on pivoting movement of the pivot lever (17), projects with decreasing degree of overlap into the path of motion of the transmission stirrup (26), which path of motion is determined by the longitudinal slot (29), and releases this transmission stirrup (26) during the pivoting release movement of the unlatching lever (18).
2. Protective switch according to claim 1, characterized in that the contact arm (13) is mounted solely on the pivot lever (17) and, with its fixing end (15), is pressed, while being positively locked, into a positive-lock recess (35) of the pivot lever (17) by means of a compression spring (34).
3. Protective switch according to claim 2, characterized in that the contact arm (13), at its fixing end (15), is provided with an L-shaped angled portion (33), the angled inner side of which is acted upon by the compression spring (34).
4. Protective switch according to one of the preceding claims, characterized in that the contact area of the contact arm (13), when the handle (4) is transferred from the switch-off to the switch-on position, slides with high contact pressure on the fixed contact (14) in longitudinal direction of the contact arm.
5. Protective switch according to one of the preceding claims, characterized in that the contact arm (13), at the start of the transference of the handle (4) from the switch-on to the switch-off position, is pulled in the longitudinal direction of the contact arm.
6. Protective switch according to one of the preceding claims, characterized in that the separate rotary axis (19) of the unlatching lever (18) is arranged on the side of the pivot lever (17), which side is remote from the handle (4).
7. Protective switch according to one of the preceding claims, characterized in that the detent (24), on its rear side remote from the handle (4), is provided with a slide-on inclined surface (43).
8. Protective switch according to one of the preceding claims, characterized in that the detent (24), in the switch-on position, only partly overlaps the longitudinal slot (29) in the transverse direction.
9. Protective switch according to one of the preceding claims, characterized in that the unlatching lever (18), in its centre area, has a web (21) for acting upon the abutment projection (22), which web (21) projects towards a housing side wall, with the abutment projection (22) being made as a housing projection.
10. Protective switch according to claim 9, characterized in that the rear side of the web (21 which rear side is remote from the abutment projection (22), is acted upon under pressure by a leg of a torsion spring (20), the other leg of which is supported on the pivot lever (17).
11. Protective switch according to one of the preceding claims, characterized in that the contact arm (13), with its free end, protrudes into a quenching ante-chamber (36).
12. Protective switch according to one of the preceding claims, characterized in that the contact arm (13), in the switch-off release position, sits against an arc baffle plate (39), as a result of which the latch (6) comes indirectly to the stop (40) during the switch-off movement.
13. Protective switch according to one claims 2 to 12, characterized in that the compression spring (34) is supported on the upper end of the arc baffle plate (39), which end faces towards a latch (6).
14. Protective switch according to one of the preceding claims, characterized in that the handle (4) is pretensioned in the switch-off release position by a further torsion spring (44) inserted into the handle (4).
EP84114175A 1983-12-17 1984-11-23 Protective circuit breaker Expired EP0147629B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114175T ATE25789T1 (en) 1983-12-17 1984-11-23 CIRCUIT BREAKER.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3345699 1983-12-17
DE3345699 1983-12-17
DE19833347097 DE3347097A1 (en) 1983-12-27 1983-12-27 Protection circuit breaker
DE3347097 1983-12-27

Publications (2)

Publication Number Publication Date
EP0147629A1 EP0147629A1 (en) 1985-07-10
EP0147629B1 true EP0147629B1 (en) 1987-03-04

Family

ID=25816525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114175A Expired EP0147629B1 (en) 1983-12-17 1984-11-23 Protective circuit breaker

Country Status (3)

Country Link
EP (1) EP0147629B1 (en)
DE (1) DE3462562D1 (en)
GR (1) GR81242B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589627B1 (en) * 1985-10-31 1988-08-26 Merlin Gerin CONTROL MECHANISM FOR LOW VOLTAGE ELECTRIC CIRCUIT BREAKER
CH670330A5 (en) * 1986-07-25 1989-05-31 Weber Ag
IT1275644B1 (en) * 1994-10-18 1997-10-17 Bticino Spa HIGH PERFORMANCE AUTOMATIC SWITCH
JP3824124B2 (en) * 1999-08-04 2006-09-20 富士電機機器制御株式会社 Circuit breaker switching mechanism
CN109509689B (en) * 2017-09-14 2024-03-26 浙江正泰电器股份有限公司 Operating mechanism of switch electric appliance

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504954B2 (en) * 1975-02-06 1976-12-02 Fa. Heinrich Kopp, Inh. Theodor Simoneit, 8756 Kahl MECHANICAL JUMPER, IN PARTICULAR FOR SMALL HIGH-PERFORMANCE SELF-SWITCHES
DE7500060U (en) * 1975-01-03 1975-05-22 Boshof R Miniature circuit breakers in slimline and low-profile design
DE3038511A1 (en) * 1980-10-11 1982-06-03 Ellenberger & Poensgen Gmbh, 8503 Altdorf Overcurrent protection switch - has auxiliary switch for switching control or monitoring signals
DE3114717C2 (en) * 1981-04-11 1987-04-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Undervoltage release for a circuit breaker
DD204343A1 (en) * 1981-08-13 1983-11-23 Wolfgang Suess PIPING PROTECTION SWITCH IN NARROW CONSTRUCTION

Also Published As

Publication number Publication date
EP0147629A1 (en) 1985-07-10
DE3462562D1 (en) 1987-04-09
GR81242B (en) 1985-04-16

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