EP2388790B1 - Circuit breaker with locking device - Google Patents

Circuit breaker with locking device Download PDF

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Publication number
EP2388790B1
EP2388790B1 EP11166423.1A EP11166423A EP2388790B1 EP 2388790 B1 EP2388790 B1 EP 2388790B1 EP 11166423 A EP11166423 A EP 11166423A EP 2388790 B1 EP2388790 B1 EP 2388790B1
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EP
European Patent Office
Prior art keywords
locking device
circuit breaker
switch housing
tilting lever
hole
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.)
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EP11166423.1A
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German (de)
French (fr)
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EP2388790A1 (en
Inventor
Bogdan Zabrocki
Christoph Bausch
Volker Heins
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.)
Eaton Electrical IP GmbH and Co KG
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Eaton Electrical IP GmbH and Co KG
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Publication of EP2388790A1 publication Critical patent/EP2388790A1/en
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Publication of EP2388790B1 publication Critical patent/EP2388790B1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
    • H01H9/282—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock
    • H01H9/283—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock the part being removable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H2009/288—Provisions relating to welded contacts

Definitions

  • the invention relates to a low-voltage circuit breaker with locking device for the rocker arm according to the preamble of claim 1, wherein a circuit breaker and a circuit breaker is to be understood.
  • a Absch distributedvorrichung is attached to the top of the switch.
  • a generic locking device of a circuit breaker in which the rocker arm can assume two stable positions corresponding to the on position and the off position of the switching device, wherein the switch housing is provided with sealing openings.
  • the locking device comprises a lever, a locking clip, a probe element and a spreading element.
  • the lever is displaceable between a first, upper position and a second, lower position and has a first opening, which allows the passage of a U-lock for locking when the lever has been moved to the second position.
  • the lever is mounted in a cap having a second opening which is aligned with the first opening when the lever is in the second position, and serves to perform the U-lock.
  • the locking clip includes two spring arms on which are formed lugs for engaging in the Plombierö réelleen when the rocker arm in one of its stable positions stands, wherein the locking device is designed so that it can be attached to the switch housing when the rocker arm is in one or the other of its stable positions.
  • the locking clip is mounted in the attachment and includes a Tastelement forming, U-shaped central part, wherein the legs of the central part are extended by the spring arms.
  • the locking clip has a clearance that is sufficiently large to allow the clip to take more or less inclined position when the shift lever is in other than one of its two stable positions.
  • the probe element is designed to detect an intermediate position between said stable positions of the rocker arm and to prevent the closing in this position.
  • the spreader connected to the lever serves to force the spring arms apart when the lever is moved from the first position to the second position to insert the lugs into the seal openings.
  • the hood-like attachment encloses the rocker arm.
  • the stop serves as an end support of the rocker arm in a lock-off position, which takes place by transfer from the normal off position by a permissible over-stroke of the rocker arm when the switch contacts are not welded.
  • each forced pivoting of the rocker arm into the lock-off position requires an actuation force that is greater than or equal to a fixed limit, above which a destruction of the switching mechanism occurs.
  • the switching mechanism is designed according to the limit, which is rarely possible with circuit breakers. As a conclusion of the rocker arm despite destruction of the switching mechanism is still not excluded, the operator could run out with dangerous consequences of a de-energized circuit.
  • the invention is therefore based on the object of specifying a circuit breaker with a cost-locking device, with a completion of the rocker arm is excluded in welded main contacts.
  • the rocker arm is securely locked in its off position, as by the in the at least one Closing opening of the locking device Hinged bracket of a U-lock
  • the head screw for a tool is concealed, whereby a release of the locking device is excluded from the switching device without authorized removal of the U-lock.
  • the circuit breaker is connectable to a non-intrusive, easy-to-attach locking device.
  • An advantageous development of the invention consists in a one-piece, low-cost locking device.
  • a further advantageous embodiment of the invention is that connect to the cover on both sides two eye-shaped, mutually aligned locking openings in the tilting direction of the rocker arm.
  • the through-bore is accessible between the spaced-apart Absch.ötechnisch.
  • the head screw is locked by a hook lock suspended in the two locking openings.
  • An advantageous development which in particular serves to block the cap screw, is that the longitudinal axes of the through-hole and the at least one closing opening intersect perpendicularly.
  • An advantageous embodiment of the invention is that in the mounted state of the locking device and in welded main contacts of the rocker arm of one of the first inner wall opposite, the second inner wall of the cover is close to.
  • the rocker arm can be surrounded both in the off position and in welded main contacts of the cover, a fastening of the locking device by means of the cap screw is not possible because of the fixed distance between the threaded hole and rocker arm.
  • An advantageous development of the invention also consists in that the outer contour of the locking device facing the switch housing is designed to conform to the switch housing in the region of the passage opening for the rocker arm, in particular when at least one web protrudes laterally from the locking device in the direction of the switch housing, into a corresponding one , trained in addition to the passage opening Bridge recording is inserted in the switch housing. This facilitates secure placement and connection of the locking device on the switching device.
  • Fig. 1 shows a circuit breaker 1, which is executed in this case unipolar.
  • the circuit breaker 1 has a rocker arm 3, with which the circuit breaker 1 can be switched on and off.
  • the circuit breaker 1 is enclosed by a switch housing 5, which has a passage opening 7 for the rocker arm 3.
  • the circuit breaker 1 has of course electrical main contacts, which are operatively connected to a switching mechanism, and can be closed or opened by actuation of the rocker arm 3. From the switching mechanism is in Fig. 1 merely to see a shift gate 9, with which the protruding from the switch housing 5 rocker arm 3 is rigidly connected.
  • the shift gate 9 is tiltable in the switch housing 5 about a fixed pivot axis and has a threaded bore 11 in the vicinity of the rocker arm 3.
  • the threaded bore 11 is accessible in the off position of the circuit breaker 1 from the outside through the passage opening 7 and extends approximately radially to the aforementioned pivot axis.
  • the rocker arm 3 assumes two stable positions corresponding to the on position and the off position of the main contacts, of which in Fig. 1 the off position is shown. When welded main contacts, however, the rocker arm 3 takes a different position from the off position and the on position.
  • Fig. 1 also shows a locking device 13 in a position for placement on the switch housing 5.
  • the locking device 13 has a front side on the switch housing 5 can be placed cover 15 to enclose the rocker arm 3 in its off position.
  • the locking device 13 is integrally formed as an injection molded part.
  • the locking device 13 has near the cover 15 on a through hole 17.
  • the threaded shaft 19 of a cap screw 21 can reach the threaded hole 11 to be connected to the shift gate 9 and thus to secure the locking device 13 on the switch housing 5.
  • the tightened in the threaded bore 11 cap screw 21 is supported with its head 23 at an outlet 25 of the through hole 17 from.
  • On both sides of the cover 13 close to two eye-shaped, mutually aligned Absch Anlagenötechnisch 27.
  • the access to the through hole 17 is located between the two closing openings 27.
  • the longitudinal axis 29 of the through hole 17 and the common longitudinal axis 31 of the two closing openings 27 intersect perpendicular to one another.
  • the switch housing 5 facing outer contour of the locking device 13 is adapted to the switch housing 5 in the region of the passage opening 7.
  • the same purpose serve a web recording 35, which is formed adjacent to the passage opening 7 in the switch housing 5, and a web of the receptacle 35 adapted web 33, which is laterally formed by the cover 15.
  • Fig. 2 shows the circuit breaker 1 in the off position with attached locking device 13.
  • the rocker arm 3 is covered by the cover 15 and completed by a padlock 37.
  • the bracket 39 of the U-lock 37 was hooked into the two Abschröötechnisch 27. In this case, the bracket 39 blocks access to the located in the outlet 25 of the through hole 17 head 23 of the cap screw 21. Without releasing the padlock 37 thus removal of the locking device 13 and thus actuation of the rocker arm 3 from its off position is not possible.
  • the shift mechanism 41 includes, among other components, the aforementioned shift gate 9.
  • the shift gate 9 is tiltably mounted about the pivot axis 43 mounted in the shift mechanism 41. Opposite to the pivot axis 43, the shift gate 9 in the manner of a Part of a cylinder jacket formed and carries the protruding from the switch housing 5 rocker arm 3. About the passage opening 7 for the rocker arm 3 sits the locking device 13 and encloses with its cover 15 in the off-position rocker arm third
  • the threaded bore 11 and the rocker arm 3 are arranged offset at a certain angle on the shift gate 9.
  • the through-hole 17 and a cover 15 belonging to the first inner wall 45 of the cover 15, which faces the off-position rocker arm 3 close, arranged offset with a certain distance.
  • the said offsets between the threaded bore 11 and the rocker arm 3 on the one hand and between the through hole 17 and the first inner wall 45 on the other hand are dimensioned to each other in such a way that only in the off position, both the rocker arm 3 can be covered by the cover 15 and the through hole 17 is in alignment with the threaded hole 11, so that only in the off position, the head screw 21 can reach over the through hole 17 in the locking device 13 in the threaded hole 11 for fixing the locking device 13 on the switch housing 5.
  • the cap screw 21 can not be manipulated with a tool.
  • Fig. 4 shows the circuit breaker 1 in a state in which the main contacts welded together as a result of a short circuit and thus are still closed. Due to the short circuit of the switching mechanism 41 has indeed been triggered, but could the shift gate 9 and thus the rocker arm 3 is not the normal off position according to Fig. 3 taking. As a result of the switching mechanism 41 inherent elasticity and the restoring forces caused by the welded main contacts take the shift gate 9 and thus necessarily the rocker arm 3 and the threaded hole 11 positions, compared to the in Fig. 3 shown positions are offset by the same angular amount counterclockwise. Also in this state, the rocker arm 3 can be covered by the cover 15.
  • the rocker arm 3 is now one of the first inner wall 45 located opposite, second inner wall 47 of the cover 15 close to. However, now the through hole 17 and the threaded hole 11 are out of alignment, so that the cap screw 21 can not penetrate into the threaded hole 11 for securing the locking device 13.
  • the threaded bore 11 is also partially covered by the switch housing 5.
  • One Attempt to complete the rocker arm 3 despite welded main contacts is doomed to failure. Because the effort to move the cap 15 enclosed by the tilting lever 3 against the restoring force of the switching mechanism 41 with the second inner wall 47 in a clockwise direction towards the normal off position, causes no change to the relative position and thus to the offset between the threaded hole 11 and the through hole 17.
  • circuit breakers are also to be understood as load-disconnectors.
  • circuit breakers are also to be understood as load-disconnectors.

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  • Breakers (AREA)

Description

Die Erfindung betrifft einen Niederspannungs-Leistungsschalter mit Abschließvorrichtung für dessen Kipphebel nach dem Oberbegriff des Anspruches 1, wobei unter einem Leistungsschalter auch ein Lasttrennschalter zu verstehen ist.The invention relates to a low-voltage circuit breaker with locking device for the rocker arm according to the preamble of claim 1, wherein a circuit breaker and a circuit breaker is to be understood.

Als Folge eines Kurzschlusses in dem mit dem Schaltgerät verbundenen Stromkreis kann es zum Verschweißen der Hauptkontakte des Schaltgerätes kommen. Dabei hat sich herausgestellt, dass der Kipphebel entgegen seiner Rückstellkraft in die Aus-Stellung gebracht werden kann, obwohl die miteinander verschweißten Kontakte geschlossen sind. Dies birgt eine Gefahr für das Bedienpersonal, das bei dem in der anscheinenden Aus-Stellung abgeschlossenen Kipphebel mit fatalen Folgen irrtümlich auf einen spannungslosen Zustand des Stromkreises schließen kann. Es ist daher vorgeschrieben, dass ein Abschließen des Kipphebels unter diesen Umständen nicht möglich sein darf.
Aus der Druckschrift JP2004014288 ist ein Schalter mit Abschließvorrichtung bekannt. Dabei wird eine Abschließvorrichtung zum Verriegeln des Griffs in Ausstellung vorgeschlagen. Aus der Druckschrift FR2658658 ist ein weiterer Schalter mit Abschließvorrichtung vorgesehen. Dabei wird eine Abschließvorrichung an der Oberseite des Schalters angebracht.Aus der Druckschrift EP 0 604 331 B1 ist eine gattungsgemäße Abschließvorrichtung eines Leitungsschutzschalter bekannt, bei dem der Kipphebel zwei stabile Stellungen entsprechend der Ein-Stellung und der Aus-Stellung des Schaltgerätes einnehmen kann, wobei das Schaltergehäuse mit Plombieröffnungen versehen ist. Die Abschließvorrichtung umfasst einen Hebel, eine Verriegelungsklammer, ein Tastelement und ein Spreizelement. Der Hebel ist zwischen einer ersten, oberen Stellung und einer zweiten, unteren Stellung verschiebbar und weist eine erste Öffnung auf, die das Hindurchführen eines Bügelschlosses zum Abschließen ermöglicht, wenn der Hebel in die zweite Stellung verbracht worden ist. Der Hebel ist in einem Aufsatz gelagert, der eine zweite Öffnung aufweist, welche mit der ersten Öffnung fluchtet, wenn der Hebel in der zweiten Stellung steht, und zum Durchführen des Bügelschlosses dient. Die Verriegelungsklammer enthält zwei Federarme, an denen Ansätze zum Eingreifen in die Plombieröffnungen ausgebildet sind, wenn der Kipphebel in einer seiner stabilen Stellungen steht, wobei die Abschließvorrichtung so ausgebildet ist, dass sie an das Schaltergehäuse angebaut werden kann, wenn der Kipphebel in der einen oder der anderen seiner stabilen Stellungen steht. Die Verriegelungsklammer ist im Aufsatz gelagert und umfasst einen das Tastelement bildenden, U-förmigen Mittelteil, wobei die Schenkel des Mittelteils durch die Federarme verlängert sind. Die Verriegelungsklammer weist ein Spiel auf, das ausreichend groß ist, um der Klammer die Einnahme einer mehr
oder weniger geneigte Stellung zu ermöglichen, wenn der Schalthebel in einer anderen als einer seiner beiden stabilen Stellungen steht. Das Tastelement ist zur Erfassung einer Zwischenstellung zwischen den genannten stabilen Stellungen des Kipphebels sowie zur Verhinderung des Abschließens in dieser Stellung ausgebildet. Das mit dem Hebel verbundene Spreizelement dient dazu, die Federarme auseinander zu drücken, wenn der Hebel von der ersten Stellung in die zweite Stellung verbracht wird, um die Ansätze in die Plombieröffnungen einzuschieben. Im aufgesetzten Zustand umschließt der haubenartige Aufsatz den Kipphebel. Von Nachteil ist der komplizierte und damit kostenaufwändige Aufbau dieser Abschließvorrichtung.As a result of a short circuit in the circuit connected to the switching device can lead to welding of the main contacts of the switching device. It has been found that the rocker arm can be brought against its restoring force in the off position, although the welded together contacts are closed. This poses a danger to the operating personnel, who can erroneously conclude that the power circuit is de-energized when the rocker arm is closed in the apparent off position with fatal consequences. It is therefore prescribed that a closure of the rocker arm under these circumstances may not be possible.
From the publication JP2004014288 a switch with locking device is known. In this case, a locking device for locking the handle in exhibition is proposed. From the publication FR2658658 another switch with locking device is provided. In this case, a Abschließvorrichung is attached to the top of the switch.From the document EP 0 604 331 B1 a generic locking device of a circuit breaker is known in which the rocker arm can assume two stable positions corresponding to the on position and the off position of the switching device, wherein the switch housing is provided with sealing openings. The locking device comprises a lever, a locking clip, a probe element and a spreading element. The lever is displaceable between a first, upper position and a second, lower position and has a first opening, which allows the passage of a U-lock for locking when the lever has been moved to the second position. The lever is mounted in a cap having a second opening which is aligned with the first opening when the lever is in the second position, and serves to perform the U-lock. The locking clip includes two spring arms on which are formed lugs for engaging in the Plombieröffnungen when the rocker arm in one of its stable positions stands, wherein the locking device is designed so that it can be attached to the switch housing when the rocker arm is in one or the other of its stable positions. The locking clip is mounted in the attachment and includes a Tastelement forming, U-shaped central part, wherein the legs of the central part are extended by the spring arms. The locking clip has a clearance that is sufficiently large to allow the clip to take more
or less inclined position when the shift lever is in other than one of its two stable positions. The probe element is designed to detect an intermediate position between said stable positions of the rocker arm and to prevent the closing in this position. The spreader connected to the lever serves to force the spring arms apart when the lever is moved from the first position to the second position to insert the lugs into the seal openings. When mounted, the hood-like attachment encloses the rocker arm. A disadvantage is the complicated and therefore expensive construction of this locking device.

Aus der Druckschrift EP 0 737 991 B1 ist ein Leitungsschutzschalter mit einem Schaltmechanismus und einer Abschließvorrichtung bekannt, wobei der Kipphebel des Leitungsschutzschalters mit einer Drehtrommel des Schaltmechanismus starr verbunden ist, die durch Schwenkung um eine Achse entweder in eine normale Aus-Stellung entsprechend einer Offenstellung der Schaltkontakte des Schaltgerätes oder in eine normale Ein-Stellung entsprechend einer Schließstellung der Schaltkontakte verbracht werden kann. Die Drehtrommel umfasst eine Ausnehmung, die in Flucht mit einer am Schaltergehäuse ausgebildeten Öffnung zum Durchführen eines Bügelschlosses gebracht werden kann. Ein Anschlag ist gegenüber der normalen Aus-Stellung des Kipphebels um ein bestimmtes Winkelmaß versetzt am Schaltgerätegehäuse angeordnet. Der Anschlag dient als Endabstützung des Kipphebels in einer Abschließ-Aus-Stellung, die durch Überführung von der normalen Aus-Stellung durch einen bei nicht verschweißten Schaltkontakten zulässigen Überhub des Kipphebels erfolgt. Bei verschweißten Schaltkontakten erfordert jedes zwangsweise Verschwenken des Kipphebels in die Verriegelungs-Aus-Stellung dagegen eine Betätigungskraft, die größer oder gleich einem festgelegten Grenzwert ist, ab dem eine Zerstörung des Schaltmechanismus eintritt. Hier ist von Nachteil, dass der Schaltmechanismus entsprechend des Grenzwertes auszulegen ist, was bei Leistungsschaltern selten möglich ist. Da ein Abschließen des Kipphebels trotz Zerstören des Schaltmechanismus weiterhin nicht ausgeschlossen ist, könnte das Bedienpersonal mit gefährlichen Folgen von einem spannungsfrei geschalteten Stromkreis ausgehen.From the publication EP 0 737 991 B1 a circuit breaker with a switching mechanism and a locking device is known, wherein the rocker arm of the circuit breaker is rigidly connected to a rotary drum of the switching mechanism by pivoting about an axis either in a normal off position corresponding to an open position of the switching contacts of the switching device or in a normal one Position can be spent according to a closed position of the switch contacts. The rotary drum comprises a recess which can be brought into alignment with a formed on the switch housing opening for performing a U-lock. A stop is offset from the normal off position of the rocker arm offset by a certain angle on the switchgear housing. The stop serves as an end support of the rocker arm in a lock-off position, which takes place by transfer from the normal off position by a permissible over-stroke of the rocker arm when the switch contacts are not welded. In welded switch contacts, however, each forced pivoting of the rocker arm into the lock-off position requires an actuation force that is greater than or equal to a fixed limit, above which a destruction of the switching mechanism occurs. Here is a disadvantage that the switching mechanism is designed according to the limit, which is rarely possible with circuit breakers. As a conclusion of the rocker arm despite destruction of the switching mechanism is still not excluded, the operator could run out with dangerous consequences of a de-energized circuit.

In der Druckschrift DE 42 27 213 C2 wird ein für Leistungsschalters vorgesehener Schaltmechanismus näher beschrieben, sodass im Folgenden nicht näher auf dessen Aufbau und Wirkungsweise eingegangen werden muss.In the publication DE 42 27 213 C2 a circuit breaker provided for switching mechanism is described in detail, so that in the following does not have to be discussed in detail on its structure and operation.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Leistungsschalter mit einer kostengünstigen Abschließvorrichtung anzugeben, mit der ein Abschließen des Kipphebels bei verschweißten Hauptkontakten ausgeschlossen ist.The invention is therefore based on the object of specifying a circuit breaker with a cost-locking device, with a completion of the rocker arm is excluded in welded main contacts.

Ausgehend von einem Leistungsschalter mit Abschließvorrichtung der eingangs genannten Art wird die Aufgabe erfindungsgemäß durch die Merkmale des unabhängigen Anspruches gelöst, während den abhängigen Ansprüchen vorteilhafte Weiterbildungen der Erfindung zu entnehmen sind.Starting from a circuit breaker with locking device of the type mentioned, the object is achieved by the features of the independent claim, while the dependent claims advantageous developments of the invention can be found.

Durch eine von außen durch das Schaltergehäuse zugängliche Gewindebohrung in der Schaltkulisse und die entsprechende Durchgangsbohrung in der Abschließvorrichtung sind Schaltgerät und Abschließvorrichtung mittels einer Kopfschraube miteinander verbindbar. Durch die zueinander bemessenen Abstände zwischen der Gewindebohrung und dem Kipphebel an der Schaltkulisse einerseits sowie zwischen der Durchgangsbohrung und einer dem in Aus-Stellung befindlichen Kipphebel nahe gegenüberstehenden, ersten Innenwand der Abdeckhaube an der Abschließvorrichtung anderseits, gelingt es ausschließlich in der normalen Aus-Stellung des Kipphebels diesen von der Abdeckhaube zu umschließen und gleichzeitig die Kopfschraube über die Durchgangsbohrung mit der Gewindebohrung in der Schaltkulisse zu verbinden. Bei einer anderen Stellung des Kipphebels, insbesondere bei verschweißten Hauptkontakten, könnte zwar die Abdeckhaube über den Kipphebel gestülpt werden, aber da die Längsachsen von Durchgangsbohrung und Gewindebohrung nicht fluchten, kann die Kopfschraube nicht zur Befestigung der Abschließvorrichtung mit der Schaltkulisse verbunden werden. Selbst der Versuch, den Kipphebel bei verschweißten Hauptkontakten entgegen der auf die Schaltkulisse wirkenden Rückstellkraft mithilfe einer Innenfläche der Abdeckhaube in Richtung Aus-Stellung zu bewegen, kann durch den unveränderten Abstand zwischen Kipphebel und Gewindebohrung an der Schaltkulisse nicht zu einer Position führen, in der die Längsachsen von Durchgangsbohrung und Gewindebohrung miteinander fluchten. Damit ist ein Abschließen des Kipphebels außerhalb der normalen Aus-Stellung ausgeschlossen. Anderseits ist der Kipphebel in seiner Aus-Stellung sicher abschließbar, da durch den in der mindestens einen Abschließöffnung der Abschließvorrichtung eingehängten Bügel eines Bügelschlosses die Kopfschraube für ein Werkzeug verdeckt ist, wodurch ein Lösen der Abschließvorrichtung vom Schaltgerät ohne autorisiertes Entfernen des Bügelschlosses ausgeschlossen ist. Somit ist der Leistungsschalter mit einer überlistungssicheren, unkompliziert zu befestigenden Abschließvorrichtung verbindbar.By an externally accessible through the switch housing threaded bore in the shift gate and the corresponding through hole in the locking device switching device and locking device by means of a cap screw connected to each other. By the mutually dimensioned distances between the threaded bore and the rocker arm on the shift gate on the one hand and between the through hole and a rocker arm located in the off position close to each other, the first inner wall of the cover on the locking device on the other hand, it is possible only in the normal off position of Tilting lever to enclose this of the cover and at the same time to connect the cap screw through the through hole with the threaded hole in the shift gate. In another position of the rocker arm, in particular in welded main contacts, although the cover could be slipped over the rocker arm, but since the longitudinal axes of through hole and threaded hole are not aligned, the cap screw can not be connected to attach the locking device with the shift gate. Even the attempt to move the rocker arm in welded main contacts against the force acting on the shift gate restoring force by means of an inner surface of the cover toward off position, can not lead to a position in which the. Through the unchanged distance between the rocker arm and threaded bore on the shift gate Longitudinal axes of through-hole and threaded hole are aligned with each other. This excludes locking of the rocker arm outside the normal off position. On the other hand, the rocker arm is securely locked in its off position, as by the in the at least one Closing opening of the locking device Hinged bracket of a U-lock The head screw for a tool is concealed, whereby a release of the locking device is excluded from the switching device without authorized removal of the U-lock. Thus, the circuit breaker is connectable to a non-intrusive, easy-to-attach locking device.

Eine vorteilhafte Weiterbildung der Erfindung besteht in einer einteiligen, günstig herzustellenden Abschließvorrichtung.An advantageous development of the invention consists in a one-piece, low-cost locking device.

Eine weitere vorteilhafte Weiterbildung der Erfindung besteht darin, dass sich an die Abdeckhaube beidseitig zwei ösenförmige, zueinander fluchtende Abschließöffnungen in Kipprichtung des Kipphebels anschließen. Zwischen den zueinander beabstandeten Abschließöffnungen ist zum einen die Durchgangsbohrung zugängig. Zum anderen wird durch ein in den beiden Abschließöffnungen eingehängtes Bügelschloss die Kopfschraube versperrt.A further advantageous embodiment of the invention is that connect to the cover on both sides two eye-shaped, mutually aligned locking openings in the tilting direction of the rocker arm. On the one hand, the through-bore is accessible between the spaced-apart Abschließöffnungen. On the other hand, the head screw is locked by a hook lock suspended in the two locking openings.

Eine vorteilhafte Weiterbildung, die insbesondere dem Versperren der Kopfschraube dient, besteht darin, dass sich die Längsachsen der Durchgangsbohrung und der mindestens einen Abschließöffnung senkrecht schneiden.An advantageous development, which in particular serves to block the cap screw, is that the longitudinal axes of the through-hole and the at least one closing opening intersect perpendicularly.

Eine vorteilhafte Ausgestaltung der Erfindung besteht darin, dass im aufgesetzten Zustand der Abschließvorrichtung und bei verschweißten Hauptkontakten der Kipphebel einer der ersten Innenwand gegenüberstehenden, zweiten Innenwand der Abdeckhaube nahe gegenübersteht. So kann der Kipphebel sowohl in der Aus-Stellung als auch bei verschweißten Hauptkontakten von der Abdeckhaube umgeben werden, eine Befestigung der Abschließvorrichtung mittels der Kopfschraube ist allerdings wegen des feststehenden Abstandes zwischen Gewindebohrung und Kipphebel nicht möglich.An advantageous embodiment of the invention is that in the mounted state of the locking device and in welded main contacts of the rocker arm of one of the first inner wall opposite, the second inner wall of the cover is close to. Thus, the rocker arm can be surrounded both in the off position and in welded main contacts of the cover, a fastening of the locking device by means of the cap screw is not possible because of the fixed distance between the threaded hole and rocker arm.

Eine vorteilhafte Weiterbildung der Erfindung besteht außerdem darin, dass die zum Schaltergehäuse weisende Außenkontur des Abschließvorrichtung zu dem Schaltergehäuse im Bereich der Durchtrittsöffnung für den Kipphebel konform ausgebildet ist, insbesondere dann wenn seitlich von der Abschließvorrichtung in Richtung Schaltergehäuse wenigstens ein Steg ragt, der in eine entsprechende, neben der Durchtrittsöffnung entsprechend ausgebildete Stegaufnahme im Schaltergehäuse einführbar ist. Dies erleichtert ein sicheres Aufsetzen und Verbinden der Abschließvorrichtung auf dem Schaltgerät.An advantageous development of the invention also consists in that the outer contour of the locking device facing the switch housing is designed to conform to the switch housing in the region of the passage opening for the rocker arm, in particular when at least one web protrudes laterally from the locking device in the direction of the switch housing, into a corresponding one , trained in addition to the passage opening Bridge recording is inserted in the switch housing. This facilitates secure placement and connection of the locking device on the switching device.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus dem folgenden, anhand von Figuren erläuterten Ausführungsbeispiel. Es zeigen

Figur 1:
einen erfindungsgemäßen Leistungsschalter in perspektivischer Explosivdarstellung;
Figur 2:
den Leistungsschalter von Fig. 1 im abgeschlossenen Zustand in perspektivischer Darstellung;
Figur 3:
den Leistungsschalter von Fig. 1 und Fig. 2 im Längsschnitt;
Figur 4:
den Leistungsschalter von Fig. 3 bei verschweißten Hauptkontakten.
Further details and advantages of the invention will become apparent from the following, explained with reference to figures embodiment. Show it
FIG. 1:
a circuit breaker according to the invention in a perspective exploded view;
FIG. 2:
the circuit breaker of Fig. 1 in the closed state in perspective view;
FIG. 3:
the circuit breaker of Fig. 1 and Fig. 2 in longitudinal section;
FIG. 4:
the circuit breaker of Fig. 3 with welded main contacts.

Fig. 1 zeigt einen Leistungsschalter 1, der in diesem Fall einpolig ausgeführt ist. Der Leistungsschalter 1 weist einen Kipphebel 3 auf, mit dem der Leistungsschalter 1 ein- und ausgeschaltet werden kann. Der Leistungsschalter 1 ist von einem Schaltergehäuse 5 umschlossen, das eine Durchtrittsöffnung 7 für den Kipphebel 3 aufweist. Der Leistungsschalter 1 hat selbstredend elektrische Hauptkontakte, die mit einem Schaltmechanismus wirkverbunden sind, und durch Betätigung des Kipphebels 3 geschlossen oder geöffnet werden können. Von dem Schaltmechanismus ist in Fig. 1 lediglich eine Schaltkulisse 9 zu sehen, mit welcher der aus dem Schaltergehäuse 5 ragende Kipphebel 3 starr verbunden ist. Die Schaltkulisse 9 ist im Schaltergehäuse 5 um eine feststehende Schwenkachse kippbar und weist in der Nähe zum Kipphebel 3 eine Gewindebohrung 11 auf. Die Gewindebohrung 11 ist in der Aus-Stellung des Leistungsschalters 1 von außen durch die Durchtrittsöffnung 7 zugängig und verläuft annähernd radial zu der vorgenannten Schwenkachse. Der Kipphebel 3 nimmt zwei stabile Stellungen entsprechend der Ein-Stellung und der Aus-Stellung der Hauptkontakte ein, wovon in Fig. 1 die Aus-Stellung dargestellt ist. Bei verschweißten Hauptkontakten nimmt jedoch der Kipphebel 3 eine von der Aus-Stellung und der Ein-Stellung unterschiedliche Zwischenstellung ein. Fig. 1 shows a circuit breaker 1, which is executed in this case unipolar. The circuit breaker 1 has a rocker arm 3, with which the circuit breaker 1 can be switched on and off. The circuit breaker 1 is enclosed by a switch housing 5, which has a passage opening 7 for the rocker arm 3. The circuit breaker 1 has of course electrical main contacts, which are operatively connected to a switching mechanism, and can be closed or opened by actuation of the rocker arm 3. From the switching mechanism is in Fig. 1 merely to see a shift gate 9, with which the protruding from the switch housing 5 rocker arm 3 is rigidly connected. The shift gate 9 is tiltable in the switch housing 5 about a fixed pivot axis and has a threaded bore 11 in the vicinity of the rocker arm 3. The threaded bore 11 is accessible in the off position of the circuit breaker 1 from the outside through the passage opening 7 and extends approximately radially to the aforementioned pivot axis. The rocker arm 3 assumes two stable positions corresponding to the on position and the off position of the main contacts, of which in Fig. 1 the off position is shown. When welded main contacts, however, the rocker arm 3 takes a different position from the off position and the on position.

Fig. 1 zeigt weiterhin eine Abschließvorrichtung 13 in einer Position zum Aufsetzen auf das Schaltergehäuse 5. Die Abschließvorrichtung 13 weist eine frontseitig auf das Schaltergehäuse 5 aufsetzbare Abdeckhaube 15 auf, um den Kipphebel 3 in seiner Aus-Stellung zu umschließen. Die Abschließvorrichtung 13 ist einteilig als Spritzgussteil ausgebildet. Die Abschließvorrichtung 13 weist nahe der Abdeckhaube 15 eine Durchgangsbohrung 17 auf. Fig. 1 also shows a locking device 13 in a position for placement on the switch housing 5. The locking device 13 has a front side on the switch housing 5 can be placed cover 15 to enclose the rocker arm 3 in its off position. The locking device 13 is integrally formed as an injection molded part. The locking device 13 has near the cover 15 on a through hole 17.

Durch diese Durchgangsbohrung 17 kann der Gewindeschaft 19 einer Kopfschraube 21 zu der Gewindebohrung 11 gelangen, um mit der Schaltkulisse 9 verbunden zu werden und damit die Abschließvorrichtung 13 auf dem Schaltergehäuse 5 zu befestigen. Hierbei stützt sich die in der Gewindebohrung 11 festgezogene Kopfschraube 21 mit ihrem Kopf 23 an einem Auslauf 25 der Durchgangsbohrung 17 ab. An beiden Seiten der Abdeckhaube 13 schließen sich zwei ösenförmige, zueinander fluchtende Abschließöffnungen 27 an. Zwischen den beiden Abschließöffnungen 27 befindet sich der Zutritt zu der Durchgangsbohrung 17. Die Längsachse 29 der Durchgangsbohrung 17 und die gemeinsame Längsachse 31 der beiden Abschließöffnungen 27 schneiden sich senkrecht zueinander. Zum sicheren Aufsetzen und erleichterten Befestigen der Abschließvorrichtung 13 auf dem Schaltergehäuse 5 ist die zum Schaltergehäuse 5 weisende Außenkontur der Abschließvorrichtung 13 an das Schaltergehäuse 5 im Bereich der Durchtrittsöffnung 7 angepasst. Dem gleichen Zweck dienen eine Stegaufnahme 35, die neben der Durchtrittsöffnung 7 im Schaltergehäuse 5 ausgebildet ist, und ein der Stegaufnahme 35 angepasster Steg 33, der seitlich von der Abdeckhaube 15 ausgebildet ist. Beim Aufsetzen der Abschließvorrichtung 13 auf das Schaltergehäuse 5 gelangt der Steg 33, gewissermaßen die Position der Abschließvorrichtung 13 justierend, in die Stegaufnahme 35.Through this through hole 17, the threaded shaft 19 of a cap screw 21 can reach the threaded hole 11 to be connected to the shift gate 9 and thus to secure the locking device 13 on the switch housing 5. Here, the tightened in the threaded bore 11 cap screw 21 is supported with its head 23 at an outlet 25 of the through hole 17 from. On both sides of the cover 13 close to two eye-shaped, mutually aligned Abschließöffnungen 27. The access to the through hole 17 is located between the two closing openings 27. The longitudinal axis 29 of the through hole 17 and the common longitudinal axis 31 of the two closing openings 27 intersect perpendicular to one another. For safe placement and easier fastening of the locking device 13 on the switch housing 5, the switch housing 5 facing outer contour of the locking device 13 is adapted to the switch housing 5 in the region of the passage opening 7. The same purpose serve a web recording 35, which is formed adjacent to the passage opening 7 in the switch housing 5, and a web of the receptacle 35 adapted web 33, which is laterally formed by the cover 15. When placing the locking device 13 on the switch housing 5, the web 33 reaches, so to speak, the position of the locking device 13 adjusting, in the bridge recording 35th

Fig. 2 zeigt den Leistungsschalter 1 in der Aus-Stellung mit aufgesetzter Abschließvorrichtung 13. Der Kipphebel 3 ist durch die Abdeckhaube 15 verdeckt und durch ein Bügelschloss 37 abgeschlossen. Dazu wurde der Bügel 39 des Bügelschlosses 37 in die beiden Abschließöffnungen 27 eingehängt. Hierbei versperrt der Bügel 39 den Zutritt zu dem sich im Auslauf 25 der Durchgangsbohrung 17 befindenden Kopf 23 der Kopfschraube 21. Ohne Losschließen des Bügelschlosses 37 ist somit ein Entfernen der Abschließvorrichtung 13 und damit ein Betätigen des Kipphebels 3 aus seiner Aus-Stellung nicht möglich. Fig. 2 shows the circuit breaker 1 in the off position with attached locking device 13. The rocker arm 3 is covered by the cover 15 and completed by a padlock 37. For this purpose, the bracket 39 of the U-lock 37 was hooked into the two Abschließöffnungen 27. In this case, the bracket 39 blocks access to the located in the outlet 25 of the through hole 17 head 23 of the cap screw 21. Without releasing the padlock 37 thus removal of the locking device 13 and thus actuation of the rocker arm 3 from its off position is not possible.

Nachstehend werden mithilfe der Fig. 3 und Fig. 4 der Leistungsschalter 1 und die Abschließvorrichtung 13 im Detail und in ihrer gegenseitigen Funktionsweise erläutert. die Hauptkontakte des Leistungsschalters 1 sind hierbei nicht dargestellt.The following are using the FIG. 3 and FIG. 4 the circuit breaker 1 and the locking device 13 explained in detail and in their mutual operation. the main contacts of the circuit breaker 1 are not shown here.

Nach Fig. 3 ist der bereits erwähnte Schaltmechanismus 41 im Schaltergehäuse 5 gelagert. Der Schaltmechanismus 41 beinhaltet neben anderen Bestandteilen die genannte Schaltkulisse 9. Die Schaltkulisse 9 ist um die im Schaltmechanismus 41 gelagerte Schwenkachse 43 kippbar gelagert. Gegenüberstehend zur Schwenkachse 43 ist die Schaltkulisse 9 in der Art einer Teilfläche eines Zylindermantels ausgebildet und trägt den aus dem Schaltergehäuse 5 ragenden Kipphebel 3. Über der Durchtrittsöffnung 7 für den Kipphebel 3 sitzt die Abschließvorrichtung 13 und umschließt mit ihrer Abdeckhaube 15 den in Aus-Stellung befindlichen Kipphebel 3.To Fig. 3 the already mentioned switching mechanism 41 is mounted in the switch housing 5. The shift mechanism 41 includes, among other components, the aforementioned shift gate 9. The shift gate 9 is tiltably mounted about the pivot axis 43 mounted in the shift mechanism 41. Opposite to the pivot axis 43, the shift gate 9 in the manner of a Part of a cylinder jacket formed and carries the protruding from the switch housing 5 rocker arm 3. About the passage opening 7 for the rocker arm 3 sits the locking device 13 and encloses with its cover 15 in the off-position rocker arm third

Zum einen sind auf der Schaltkulisse 9 die Gewindebohrung 11 und der Kipphebel 3 mit einem gewissen Winkel versetzt angeordnet. Zum anderen sind in der Abschließvorrichtung 13 die Durchgangsbohrung 17 und eine zur Abdeckhaube 15 gehörende erste Innenwand 45 der Abdeckhaube 15, die dem in Aus-Stellung befindlichen Kipphebel 3 nahe gegenübersteht, mit einem gewissen Abstand versetzt angeordnet. Die besagten Versätze zwischen der Gewindebohrung 11 und dem Kipphebel 3 einerseits und zwischen der Durchgangsbohrung 17 und der ersten Innenwand 45 anderseits sind zueinander in der Weise bemessen, dass lediglich in der Aus-Stellung sowohl der Kipphebel 3 von der Abdeckhaube 15 abgedeckt werden kann als auch die Durchgangsbohrung 17 sich in Flucht mit der Gewindebohrung 11 befindet, sodass ausschließlich in der Aus-Stellung die Kopfschraube 21 über die Durchgangsbohrung 17 in der Abschließvorrichtung 13 in die Gewindebohrung 11 zum Befestigen der Abschließvorrichtung 13 auf dem Schaltergehäuse 5 greifen kann. Durch den in die Abschließöffnungen 27 eingehängten Bügel 39 bei verschlossenem Bügelschloss 37 kann die Kopfschraube 21 nicht mehr mit einem Werkzeug manipuliert werden.First, the threaded bore 11 and the rocker arm 3 are arranged offset at a certain angle on the shift gate 9. On the other hand, in the locking device 13, the through-hole 17 and a cover 15 belonging to the first inner wall 45 of the cover 15, which faces the off-position rocker arm 3 close, arranged offset with a certain distance. The said offsets between the threaded bore 11 and the rocker arm 3 on the one hand and between the through hole 17 and the first inner wall 45 on the other hand are dimensioned to each other in such a way that only in the off position, both the rocker arm 3 can be covered by the cover 15 and the through hole 17 is in alignment with the threaded hole 11, so that only in the off position, the head screw 21 can reach over the through hole 17 in the locking device 13 in the threaded hole 11 for fixing the locking device 13 on the switch housing 5. By hooked into the Abschließöffnungen 27 bracket 39 with closed U-lock 37, the cap screw 21 can not be manipulated with a tool.

Fig. 4 zeigt den Leistungsschalter 1 in einem Zustand, bei dem die Hauptkontakte infolge eines stattgefundenen Kurzschlusses miteinander verschweißt und damit noch geschlossen sind. Aufgrund des Kurzschlusses ist der Schaltmechanismus 41 zwar ausgelöst worden, jedoch konnten die Schaltkulisse 9 und damit der Kipphebel 3 nicht die normale Aus-Stellung gemäß Fig. 3 einnehmen. Infolge der dem Schaltmechanismus 41 innewohnenden Elastizität und die durch die verschweißten Hauptkontakte verursachten Rückstellkräfte nehmen die Schaltkulisse 9 und damit notwendigerweise der Kipphebel 3 und die Gewindebohrung 11 Stellungen ein, die gegenüber den in Fig. 3 gezeigten Stellungen um den gleichen Winkelbetrag entgegen dem Uhrzeigersinn versetzt sind. Auch in diesem Zustand kann der Kipphebel 3 von der Abdeckhaube 15 überdeckt werden. Der Kipphebel 3 steht nun einer der ersten Innenwand 45 gegenüber befindlichen, zweiten Innenwand 47 der Abdeckhaube 15 nahe gegenüber. Allerdings liegen jetzt die Durchgangsbohrung 17 und die Gewindebohrung 11 außer Flucht, sodass die Kopfschraube 21 nicht zum Befestigen der Abschließvorrichtung 13 in die Gewindebohrung 11 dringen kann. Die Gewindebohrung 11 ist zudem teilweise vom Schaltergehäuse 5 verdeckt. Ein Versuch zum Abschließen des Kipphebels 3 trotz verschweißter Hauptkontakte ist zum Scheitern verurteilt. Denn das Bemühen, den durch die Abdeckhaube 15 umschlossenen Kipphebel 3 entgegen der Rückstellkraft des Schaltmechanismus 41 mit der zweiten Innenwand 47 im Uhrzeigersinn in Richtung zur normalen Aus-Stellung zu bewegen, bewirkt keine Änderung an der relativen Position und damit an dem Versatz zwischen der Gewindebohrung 11 und der Durchgangsbohrung 17. Fig. 4 shows the circuit breaker 1 in a state in which the main contacts welded together as a result of a short circuit and thus are still closed. Due to the short circuit of the switching mechanism 41 has indeed been triggered, but could the shift gate 9 and thus the rocker arm 3 is not the normal off position according to Fig. 3 taking. As a result of the switching mechanism 41 inherent elasticity and the restoring forces caused by the welded main contacts take the shift gate 9 and thus necessarily the rocker arm 3 and the threaded hole 11 positions, compared to the in Fig. 3 shown positions are offset by the same angular amount counterclockwise. Also in this state, the rocker arm 3 can be covered by the cover 15. The rocker arm 3 is now one of the first inner wall 45 located opposite, second inner wall 47 of the cover 15 close to. However, now the through hole 17 and the threaded hole 11 are out of alignment, so that the cap screw 21 can not penetrate into the threaded hole 11 for securing the locking device 13. The threaded bore 11 is also partially covered by the switch housing 5. One Attempt to complete the rocker arm 3 despite welded main contacts is doomed to failure. Because the effort to move the cap 15 enclosed by the tilting lever 3 against the restoring force of the switching mechanism 41 with the second inner wall 47 in a clockwise direction towards the normal off position, causes no change to the relative position and thus to the offset between the threaded hole 11 and the through hole 17.

Die vorliegende Erfindung ist nicht auf die vorstehend beschriebene Ausführungsform beschränkt, sondern umfasst auch alle im Sinne der Erfindung gleichwirkenden Ausführungsformen. So lässt sich die Erfindung beispielsweise auch auf mehrpolige Leistungsschalter anwenden. Unter Leistungsschalter sind im Sinne der Erfindung auch Lasttrennschalter zu verstehen. Bezugszeichenliste: 1 Leistungsschalter 23 Kopf 3 Kipphebel 25 Auslauf 5 Schaltergehäuse 27 Abschließöffnung 7 Durchtrittsöffnung 29; 31 Längsachsen 9 Schaltkulisse 33 Steg 11 Gewindebohrung 35 Stegaufnahme 13 Abschließvorrichtung 37 Bügelschloss 15 Abdeckhaube 39 Bügel 17 Durchgangsbohrung 41 Schaltmechanismus 19 Gewindeschaft 43 Schwenkachse 21 Kopfschraube 45; 47 Innenwände The present invention is not limited to the embodiment described above, but also includes all the same in the context of the invention embodiments. For example, the invention can also be applied to multi-pole circuit breakers. In the context of the invention, circuit breakers are also to be understood as load-disconnectors. <B> LIST OF REFERENCES: </ b> 1 breakers 23 head 3 rocker arm 25 outlet 5 switch housing 27 Abschließöffnung 7 Through opening 29; 31 longitudinal axes 9 shift gate 33 web 11 threaded hole 35 Steg recording 13 Locking 37 U-lock 15 cover 39 hanger 17 Through Hole 41 switching mechanism 19 threaded shaft 43 swivel axis 21 head screw 45; 47 interior walls

Claims (7)

  1. Circuit breaker with a locking device for a tilting lever provided for switching the circuit breaker on and off, wherein
    - a switch housing (5) enclosing the circuit breaker (1) comprises an opening (7) for the tilting lever (3),
    - an actuator mechanism (41) operatively connected to the main contacts of the circuit breaker (1) comprises a shifting gate (9) to which the tilting lever (3) protruding from the switch housing (5) is rigidly connected, the shifting gate (9) being rotatable about an axle (43) which is fixedly mounted opposite the switch housing (5),
    - the tilting lever (3) has at least two stable positions, and more specifically positions at least corresponding to the on-position and the off-position of the main contacts, wherein the tilting lever is in an intermediate-position different from the off-position, when the main contacts are welded, and
    - the locking device (13) which may be mounted on the switch housing (5) comprises a cover (15) which may enclose the tilting lever (3) in the off-position, the cover comprising at least one locking through hole opening (27) for holding a shackle lock (37) and being fastenable on the switch housing (5).
    characterized in that
    - the shifting gate (9) comprises near the tilting lever (3) a threaded hole (11) which is approximately radial in relation to the axle (43) and which can be accessed from the exterior through the switch housing (5) when the tilting lever is in the off-position,
    - the locking device (13) comprises near the cover (15) a through hole (17), through which a threaded shank (19) of a cap screw (21) extends to the shifting gate (9), the cap screw (21) being provided for fastening the locking device (13) on the switch housing (5),
    - the angle between the threaded hole (11) and the tilting lever (3) on the one hand, and, when the locking device (13) is mounted, the distance between the through hole (17) and a first inner wall (45) of the cover (15) that is closely opposite the tilting lever (3) in the off-position, on the other hand, are such that only when in the off-position, the tilting lever (3) is enclosed by the cover (15), and simultaneously the through hole (17) and the threaded hole (11) are aligned, and
    - the cap screw (21) tightened in the threaded hole (11) may be covered by a shackle (39) of the shackle lock (37) that has been inserted in the locking opening (27).
  2. Circuit breaker with a locking device according to the preceding claim, characterized in that the locking device (13), apart from the cap screw (21), is integrally formed.
  3. Circuit breaker with a locking device according to any of the preceding claims, characterized in that two locking openings (27) between which the through hole may be accessed, extend on both sides of the cover (15), the locking openings (27) being formed as loops and being aligned with each other.
  4. Circuit breaker with a locking device according to any of the preceding claims, characterized in that the longitudinal axis (29) of the through hole (17) and the longitudinal axis (31) of the at least one locking opening (27) intersect perpendicularly.
  5. Circuit breaker with a locking device according to any of the preceding claims, characterized in that the tilting lever (3), when the locking device (13) is mounted and the main contacts are welded, is positioned closely opposite a second inner wall (45) of the cover (15), the second inner wall (47) being opposite a first inner wall.
  6. Circuit breaker with a locking device according to any of the preceding claims, characterized in that an outer contour of the locking device (13) that is facing towards the switch housing (5) is correspondingly shaped in relation to the switch housing (5) in the area of opening (7).
  7. Circuit breaker with a locking device according to the preceding claim, characterized in that, laterally of the locking device (13) in the direction of switch housing (5), at least one bar (33) protrudes which may be inserted into a corresponding bar recess (35) in the switch housing (5), that is formed adjacent the opening (7).
EP11166423.1A 2010-05-19 2011-05-17 Circuit breaker with locking device Active EP2388790B1 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8629359B2 (en) * 2011-02-16 2014-01-14 Panduit Corp. Circuit breaker lockout
DE102012110248A1 (en) 2012-10-26 2014-04-30 Eaton Industries (Austria) Gmbh Lock for circuit breaker of circuit breaker system, has base structure that is provided with locking opening whose axis is extended transversely across the cover, when cover is positioned in the first position
DE102013112590A1 (en) 2013-11-15 2015-05-21 Eaton Industries Austria Gmbh Lock for a circuit breaker

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849552A (en) * 1954-03-19 1958-08-26 Westinghouse Electric Corp Circuit breaker locking
IT8223118V0 (en) * 1982-10-07 1982-10-07 Sace Spa ELECTRIC SWITCH WITH STOPPING THE CONTROL LEVER STROKE IN CASE OF WELDING THE CONTACTS.
GB8718487D0 (en) * 1987-08-05 1987-09-09 Bicc Plc Electric switch locking device
FR2650701B1 (en) * 1989-08-03 1995-12-15 Merlin Gerin MODULAR CIRCUIT-BREAKER OR SWITCH HAVING A DISCONNECTION MODULE
US4978816A (en) * 1990-02-16 1990-12-18 General Electric Company Circuit breaker handle interlock arrangement
DE9100730U1 (en) * 1991-01-23 1992-07-16 Klöckner-Moeller GmbH, 5300 Bonn Circuit breaker locking device
DE4227213C2 (en) * 1992-08-17 1995-08-31 Kloeckner Moeller Gmbh Switch lock for a circuit breaker
FR2699728B1 (en) * 1992-12-21 1995-03-17 Merlin Gerin Padlocking device for a manual control lever of a modular electrical device.
FR2733087B1 (en) * 1995-04-13 1997-06-06 Schneider Electric Sa ELECTRICAL APPARATUS AND IN PARTICULAR CIRCUIT-BREAKER EQUIPPED WITH A SAFETY DEVICE
US5732815A (en) * 1996-08-13 1998-03-31 Panduit Corp. Circuit breaker lockout device
JP4119169B2 (en) * 2002-06-06 2008-07-16 株式会社日立産機システム Circuit breaker

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