CN103681032B - For the mechanical interlocks of air circuit - Google Patents
For the mechanical interlocks of air circuit Download PDFInfo
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- CN103681032B CN103681032B CN201210322230.0A CN201210322230A CN103681032B CN 103681032 B CN103681032 B CN 103681032B CN 201210322230 A CN201210322230 A CN 201210322230A CN 103681032 B CN103681032 B CN 103681032B
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- circuit breaker
- trip bar
- main shaft
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- location recognition
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Abstract
A kind of mechanical interlocks of air circuit, comprise: the first circuit breaker trip bar actuator flexible member is arranged on the first circuit breaker trip bar actuator, the first breaker main shaft location recognition part flexible member is arranged on the first breaker main shaft location recognition part; Second circuit breaker trip bar actuator flexible member is arranged on the second circuit breaker trip bar actuator, and the second breaker main shaft location recognition part flexible member is arranged on the second breaker main shaft location recognition part; First hawser is connected between the first breaker main shaft location recognition part and the second circuit breaker trip bar actuator; Second hawser is connected between the first circuit breaker trip bar actuator and the second breaker main shaft location recognition part.
Description
Technical field
The present invention relates to mechanical interlocks, particularly relate to the mechanical interlocks for air circuit, this mechanical interlocks is used for, between the circuit breaker of two mutual collaborative works, limiting the operation of another circuit breaker with the state of a circuit breaker.
Background technology
In the prior art, general mechanical interlocks is usually used in, between the circuit breaker of two mutual collaborative works, limiting the operation of another circuit breaker with the state of a circuit breaker.Just need this hawser mechanical interlocks in dual-power transfer switch equipment as shown in Figure 1, be used for preventing two circuit breakers to be in "on" position simultaneously, thus avoid equipment short circuit, the security incident such as personnel are shocked by electricity.Along with the progress of society, society is to enterprise, and enterprise is to self, and the requirement in product safety performance is also more and more higher.The security performance of product not only will be weighed under correct use situation from user, also will consider user's safety problem when contingent mistake uses simultaneously.By the research to existing machinery interlock, analysis, find that product exists potential safety hazard when many contingent mistakes use.
Mechanical interlocks of the prior art makes to be in lower position by the release lever of that circuit breaker of interlocking by pulling of hawser, thus make its closing operation invalid.This pulling can be lost efficacy in the case where there:
Holding screw is not screwed to the moment of torsion of regulation;
Because not selecting the holding screw of regulation, and make it can fluff in the near future in use;
User has selected the hawser substituted, but after putting into operation soon this hawser rupture.
These situations about producing because of user error operation all can make mechanical interlocks lose efficacy thus cause following potential safety hazard:
Electric shock is caused injury or lethal: such as maintenance personal is when keeping in repair stand-by power supply (as generator), and load is by commonly using Power supply.Because certain reason circuit breaker obtains reclosing command, this circuit breaker was closed a floodgate because mechanical interlocks lost efficacy, and now maintenance personal is subject to the shock hazard coming from conventional power supply.
Fire and equipment damage: such as conventional power supply powering load, because certain reason circuit breaker obtains reclosing command, this circuit breaker was closed a floodgate because tool interlock lost efficacy, and was now conventionally short-circuited between power supply and stand-by power supply, and equipment suffers damage and likely initiation fire.
Therefore, this area is in the urgent need to a kind of mechanical interlocks for air circuit, this device closes a floodgate while still stoping two circuit breakers when causing interlocking hawser to lose efficacy because of user operation and mistake in, thus greatly improves the security performance of product.
Summary of the invention
In order to solve defect of the prior art, the invention provides a kind of mechanical interlocks of air circuit, described device comprises:
Be arranged on the first circuit breaker trip bar actuator on the first circuit breaker (A), the first breaker main shaft location recognition part, the first circuit breaker trip bar, the first circuit breaker drive rod;
Be arranged on the second circuit breaker trip bar actuator on the second circuit breaker (B), the second breaker main shaft location recognition part, the second circuit breaker trip bar, the second circuit breaker drive rod;
First circuit breaker trip bar actuator flexible member is arranged on the first circuit breaker trip bar actuator, and the first breaker main shaft location recognition part flexible member is arranged on the first breaker main shaft location recognition part;
Second circuit breaker trip bar actuator flexible member is arranged on the second circuit breaker trip bar actuator, and the second breaker main shaft location recognition part flexible member is arranged on the second breaker main shaft location recognition part;
First hawser is connected between the first breaker main shaft location recognition part and the second circuit breaker trip bar actuator;
Second hawser is connected between the first circuit breaker trip bar actuator and the second breaker main shaft location recognition part.
First circuit breaker trip bar actuator flexible member applies to make the first circuit breaker trip bar actuator be pivoted to the power of gate-dividing state;
Second circuit breaker trip bar actuator flexible member applies to make the second circuit breaker trip bar actuator be pivoted to the power of gate-dividing state;
First breaker main shaft location recognition part flexible member applies to make the first breaker main shaft location recognition part on the direction contrary with the pivotal orientation of the second circuit breaker trip bar actuator, carry out the power of pivotable;
Second breaker main shaft location recognition part flexible member applies to make the second breaker main shaft location recognition part on the direction contrary with the pivotal orientation of the first circuit breaker trip bar actuator, carry out the power of pivotable.
When the first circuit breaker is in gate-dividing state, first breaker main shaft location recognition part under the effect of the first breaker main shaft location recognition part flexible member near the first circuit breaker drive rod, the active force simultaneously pulling the second circuit breaker trip bar actuator to overcome the second circuit breaker trip bar actuator flexible member by the first hawser makes the second circuit breaker trip bar actuator not contact with the second circuit breaker trip bar, now the second circuit breaker trip bar is positioned at higher position, thus the closing operation of the second circuit breaker can realize.
When the first circuit breaker is in "on" position, first breaker main shaft location recognition part is in lower position under the driving of the first circuit breaker drive rod, second circuit breaker trip bar actuator is because losing the first breaker main shaft location recognition part pulling by the first hawser, so under the effect of the second circuit breaker trip bar actuator flexible member, the second circuit breaker trip bar is depressed into lower position, thus the closing operation of the second circuit breaker cannot realize.
The mechanical interlocks that the invention provides a kind of air circuit also can have following characteristics:
First breaker main shaft location recognition part arranges the first breaker pull rod;
Second breaker main shaft location recognition part arranges the second breaker pull rod;
When the first circuit breaker is in gate-dividing state, first circuit breaker drive rod is driven the first breaker main shaft location recognition part by the first breaker pull rod, the first breaker main shaft location recognition part is made to be positioned at higher position, thus make the first breaker main shaft location recognition part by the active force that the first hawser pulls the second circuit breaker trip bar actuator to overcome the second circuit breaker trip bar actuator flexible member, the second circuit breaker trip bar actuator not contacted with the second circuit breaker trip bar, now the second circuit breaker trip bar is positioned at higher position, thus the closing operation of the second circuit breaker can realize.
When the first circuit breaker is in gate-dividing state, first breaker main shaft location recognition part is because of the driving not by the first circuit breaker drive rod, thus pull under the driving of the first breaker main shaft location recognition part flexible member the first hawser make the second circuit breaker trip bar actuator by the first hawser pull overcome the second circuit breaker trip bar actuator flexible member after be in lower position, now the second circuit breaker trip bar is positioned at higher position because losing the driving of the second circuit breaker trip bar actuator, thus the closing operation of the second circuit breaker can realize.
According to the present invention, when the first circuit breaker is in "on" position, if the first hawser be connected between the first breaker main shaft location recognition part and the second circuit breaker trip bar actuator lost efficacy, now the second circuit breaker trip bar actuator is still by the driving of the second circuit breaker trip bar actuator flexible member, thus the second circuit breaker trip bar is depressed into lower position, thus the closing operation of the second circuit breaker cannot realize.
When the second circuit breaker is in "on" position, if the second hawser be connected between the second breaker main shaft location recognition part and the first circuit breaker trip bar actuator lost efficacy, now the first circuit breaker trip bar actuator is still by the driving of the first circuit breaker trip bar actuator flexible member, thus the first circuit breaker trip bar is depressed into lower position, thus the closing operation of the first circuit breaker cannot realize.
Described first circuit breaker trip bar actuator flexible member and described second circuit breaker trip bar actuator flexible member are torsion spring, extension spring or stage clip.
Described first breaker main shaft location recognition part flexible member and described second breaker main shaft location recognition part flexible member are torsion spring, extension spring or stage clip.
According to the present invention, efficiently avoid mechanical interlocks of the prior art Problem of Failure in the case where there: holding screw is not screwed to the moment of torsion of regulation; Because not selecting the holding screw of regulation, and make it can fluff in the near future in use; User has selected the hawser substituted, but after putting into operation soon this hawser rupture.
When causing interlocking hawser to lose efficacy because user error uses, close a floodgate while the present invention still can stop two circuit breakers, thus the security performance of the product greatly improved, meet society to product renewing, higher safety requirements.
So far, in order to the present invention can be better understood in this detailed description, and can be realized better the contribution of prior art in order to the present invention, the disclosure outlines embodiments of the invention quite widely.Certainly, the specific embodiment of the present invention will be described below and will form the theme of claims.
In this respect, before explaining embodiments of the invention in detail, should be appreciated that the present invention is not restricted in its application to propose in the following description or the details of structure illustrated in the accompanying drawings and the configuration of parts.The present invention can have except describe those except embodiment, and can to implement by different way and carry out.Moreover, should be appreciated that the wording that adopts at this and term and summary are the objects in order to describe, should not think determinate.
Similarly, those skilled in the art will recognize that, the disclosure based on design can be easily used as design other structure, method and system basis, for implementing several object of the present invention.Therefore, importantly, claims will be understood that and comprise such equivalent structure, as long as they do not exceed the spirit and scope of the invention.
Accompanying drawing explanation
Better understanding will be had to the present invention by accompanying drawing those skilled in the art below, and more can clearly embody advantage of the present invention.Accompanying drawing described herein is only in order to the illustration purpose of selected embodiment, instead of all possible execution mode and be intended to not limit scope of the present invention.
Fig. 1 illustrates and is of the prior artly connected to the mechanical interlocks between two circuit breakers and the structure for fastening hawser;
The schematic diagram of Fig. 2 illustrates according to mechanical interlocks of the present invention;
The schematic diagram of Fig. 3 A-3B illustrates combined floodgate and gate-dividing state.
Embodiment
Below with reference to accompanying drawing to being described in detail according to a preferred embodiment of the invention.By accompanying drawing and corresponding explanatory note, it will be understood to those of skill in the art that characteristics and advantages of the present invention.
It is well known that breaker main shaft is equipped with " the circuit breaker drive rod " of energy mechanical interlocking.When circuit breaker is at gate-dividing state, " circuit breaker drive rod " is positioned at higher position (Fig. 3 A); When circuit breaker is in "on" position, " circuit breaker drive rod " is positioned at lower position (Fig. 3 B).Circuit breaker is also equipped with simultaneously " release lever ".When " release lever " is in higher position (Fig. 3 B), circuit breaker can be closed a floodgate; When " release lever " is in lower position (Fig. 3 A), breaker switching-on operation can not realize.
The present invention follows this principle equally, present invention employs following novel configuration relation, although wherein each parts are identical with prior art.
The schematic diagram of Fig. 2 illustrates according to mechanical interlocks of the present invention.First circuit breaker A and the second circuit breaker B is also shown in Fig. 2.
Mechanical interlocks according to the present invention comprises: be arranged on the first circuit breaker trip bar actuator A1 on the first circuit breaker A, the first breaker main shaft location recognition part A2, the first circuit breaker trip bar A3 and the first circuit breaker drive rod A4.
Also comprise the second circuit breaker trip bar actuator B1 be arranged on the second circuit breaker B, the second breaker main shaft location recognition part B2, the second circuit breaker trip bar B3 and the second circuit breaker drive rod B4.
First circuit breaker trip bar actuator flexible member A5 to be arranged on the first circuit breaker trip bar actuator and can pivotable first circuit breaker trip bar actuator in the counterclockwise direction, and the first breaker main shaft location recognition part flexible member A6 to be arranged on the first breaker main shaft location recognition part and can pivotable first breaker main shaft location recognition part in the clockwise direction.
Second circuit breaker trip bar actuator flexible member B5 to be arranged on the second circuit breaker trip bar actuator and can pivotable second circuit breaker trip bar actuator in the counterclockwise direction, and the second breaker main shaft location recognition part flexible member B6 to be arranged on the second breaker main shaft location recognition part and can pivotable second breaker main shaft location recognition part in the clockwise direction.
First hawser 7 is connected between the first breaker main shaft location recognition part A2 and the second circuit breaker trip bar actuator B1.
Second hawser 8 is connected between the first circuit breaker trip bar actuator A1 and the second breaker main shaft location recognition part B2.
When the first circuit breaker A is in gate-dividing state, first breaker main shaft location recognition part A2 under the effect of the first breaker main shaft location recognition part flexible member A6 near the first circuit breaker drive rod A4, the active force simultaneously pulling the second circuit breaker trip bar actuator B1 to overcome the second circuit breaker trip bar actuator flexible member B5 by the first hawser 7 makes the second circuit breaker trip bar actuator B1 not contact with the second circuit breaker trip bar B3, now the second circuit breaker trip bar B3 is positioned at higher position, thus the closing operation of the second circuit breaker B can realize.
When the first circuit breaker A is in "on" position, first breaker main shaft location recognition part A2 is in lower position under the driving of the first circuit breaker drive rod A4, second circuit breaker trip bar actuator B1 is because losing the first breaker main shaft location recognition part A2 pulling by the first hawser 7, so under the effect of the second circuit breaker trip bar actuator flexible member B5, the second circuit breaker trip bar B3 is depressed into lower position, thus the closing operation of the second circuit breaker B cannot realize.
An aspect according to mechanical interlocks of the present invention:
First breaker main shaft location recognition part A2 is also provided with the first breaker pull rod A21.
Second breaker main shaft location recognition part B2 is also provided with the second breaker pull rod B21.
When the first circuit breaker A is in gate-dividing state, first circuit breaker drive rod A4 is driven the first breaker main shaft location recognition part A2 by the first breaker pull rod A21, the first breaker main shaft location recognition part A2 is made to be positioned at higher position, thus make the first breaker main shaft location recognition part A2 by the active force that the first hawser 7 pulls the second circuit breaker trip bar actuator B1 to overcome the second circuit breaker trip bar actuator flexible member B5, the second circuit breaker trip bar actuator B1 not contacted with the second circuit breaker trip bar B3, now the second circuit breaker trip bar B3 is positioned at higher position, thus the closing operation of the second circuit breaker B can realize.
When the first circuit breaker A is in gate-dividing state, first breaker main shaft location recognition part A2 is because of the driving not by the first circuit breaker drive rod A4, thus pull under the driving of the first breaker main shaft location recognition part flexible member A6 the first hawser 7 make the second circuit breaker trip bar actuator B1 by the first hawser 7 pull overcome the second circuit breaker trip bar actuator flexible member B5 after be in lower position, now the second circuit breaker trip bar B3 is positioned at higher position because losing the driving of the second circuit breaker trip bar actuator B1, thus the closing operation of the second circuit breaker B can realize.
Another aspect according to mechanical interlocks of the present invention:
When the first circuit breaker A is in "on" position, if the first hawser 7 be connected between the first breaker main shaft location recognition part A2 and the second circuit breaker trip bar actuator B1 lost efficacy, now the second circuit breaker trip bar actuator B1 is still by the driving of the second circuit breaker trip bar actuator flexible member B5, thus the second circuit breaker trip bar B3 is depressed into lower position, thus the closing operation of the second circuit breaker B cannot realize.
When the second circuit breaker B is in "on" position, if the second hawser 8 be connected between the second breaker main shaft location recognition part B2 and the first circuit breaker trip bar actuator A1 lost efficacy, now the first circuit breaker trip bar actuator A1 is still by the driving of the first circuit breaker trip bar actuator flexible member A5, thus the first circuit breaker trip bar A3 is depressed into lower position, thus the closing operation of the first circuit breaker A cannot realize.
Described first circuit breaker trip bar actuator flexible member and described second circuit breaker trip bar actuator flexible member are torsion spring, extension spring or stage clip.
Described first breaker main shaft location recognition part flexible member and described second breaker main shaft location recognition part flexible member are torsion spring, extension spring or stage clip.
According to the enlightenment of above-described embodiment, those skilled in the art it is to be appreciated that arranging as follows of each flexible member all can meet technique effect of the present invention, that is:
First circuit breaker trip bar actuator flexible member applies to make the first circuit breaker trip bar actuator be pivoted to the power of gate-dividing state; Second circuit breaker trip bar actuator flexible member applies to make the second circuit breaker trip bar actuator be pivoted to the power of gate-dividing state; First breaker main shaft location recognition part flexible member applies to make the first breaker main shaft location recognition part on the direction contrary with the pivotal orientation of the second circuit breaker trip bar actuator, carry out the power of pivotable; Second breaker main shaft location recognition part flexible member applies to make the second breaker main shaft location recognition part on the direction contrary with the pivotal orientation of the first circuit breaker trip bar actuator, carry out the power of pivotable.
With reference to specific embodiment, although the present invention is illustrated in the specification and illustrated in the drawings, but should be appreciated that when not departing from the scope of the invention defined in claim, art personnel can make multiple change and the alternative wherein Various Components of multiple equivalent.And, the combination of the technical characteristic herein between specific embodiment, element and/or function and collocation are clear distinct, therefore according to the content disclosed in these, technical characteristic, element and/or function that art personnel can understand in embodiment can optionally be incorporated in another specific embodiment, unless foregoing has other description.In addition, according to instruction of the present invention, do not depart from the scope of essence of the present invention, adapt to special situation or material can make many changes.Therefore, the present invention is not limited to accompanying drawing institute graphic other specific embodiment, and the specific embodiment as the preferred forms at present contemplated by enforcement the present invention described in specification, and intention of the present invention comprises all execution modes fallen in above-mentioned specification and appended right.
Claims (7)
1. a mechanical interlocks for air circuit, is characterized in that, described device comprises:
Be arranged on the first circuit breaker trip bar actuator on the first circuit breaker, the first breaker main shaft location recognition part, the first circuit breaker trip bar, the first circuit breaker drive rod;
Be arranged on the second circuit breaker trip bar actuator on the second circuit breaker, the second breaker main shaft location recognition part, the second circuit breaker trip bar, the second circuit breaker drive rod;
First circuit breaker trip bar actuator flexible member is arranged on the first circuit breaker trip bar actuator, and the first breaker main shaft location recognition part flexible member is arranged on the first breaker main shaft location recognition part;
Second circuit breaker trip bar actuator flexible member is arranged on the second circuit breaker trip bar actuator, and the second breaker main shaft location recognition part flexible member is arranged on the second breaker main shaft location recognition part;
First hawser is connected between the first breaker main shaft location recognition part and the second circuit breaker trip bar actuator;
Second hawser is connected between the first circuit breaker trip bar actuator and the second breaker main shaft location recognition part.
2. mechanical interlocks according to claim 1, is characterized in that:
First circuit breaker trip bar actuator flexible member applies to make the first circuit breaker trip bar actuator be pivoted to the power of gate-dividing state;
Second circuit breaker trip bar actuator flexible member applies to make the second circuit breaker trip bar actuator be pivoted to the power of gate-dividing state;
First breaker main shaft location recognition part flexible member applies to make the first breaker main shaft location recognition part on the direction contrary with the pivotal orientation of the second circuit breaker trip bar actuator, carry out the power of pivotable;
Second breaker main shaft location recognition part flexible member applies to make the second breaker main shaft location recognition part on the direction contrary with the pivotal orientation of the first circuit breaker trip bar actuator, carry out the power of pivotable.
3. mechanical interlocks according to claim 2, is characterized in that:
When the first circuit breaker is in gate-dividing state, first breaker main shaft location recognition part under the effect of the first breaker main shaft location recognition part flexible member near the first circuit breaker drive rod, the active force simultaneously pulling the second circuit breaker trip bar actuator to overcome the second circuit breaker trip bar actuator flexible member by the first hawser makes the second circuit breaker trip bar actuator not contact with the second circuit breaker trip bar, now the second circuit breaker trip bar is positioned at higher position, thus the closing operation of the second circuit breaker can realize;
When the first circuit breaker is in "on" position, first breaker main shaft location recognition part is in lower position under the driving of the first circuit breaker drive rod, second circuit breaker trip bar actuator is because losing the first breaker main shaft location recognition part pulling by the first hawser, so under the effect of the second circuit breaker trip bar actuator flexible member, the second circuit breaker trip bar is depressed into lower position, thus the closing operation of the second circuit breaker cannot realize.
4. mechanical interlocks according to claim 2, is characterized in that:
First breaker main shaft location recognition part arranges the first breaker pull rod;
Second breaker main shaft location recognition part arranges the second breaker pull rod;
When the first circuit breaker is in gate-dividing state, first circuit breaker drive rod is driven the first breaker main shaft location recognition part by the first breaker pull rod, the first breaker main shaft location recognition part is made to be positioned at higher position, thus make the first breaker main shaft location recognition part by the active force that the first hawser pulls the second circuit breaker trip bar actuator to overcome the second circuit breaker trip bar actuator flexible member, the second circuit breaker trip bar actuator not contacted with the second circuit breaker trip bar, now the second circuit breaker trip bar is positioned at higher position, thus the closing operation of the second circuit breaker can realize,
When the first circuit breaker is in gate-dividing state, first breaker main shaft location recognition part is because of the driving not by the first circuit breaker drive rod, thus pull under the driving of the first breaker main shaft location recognition part flexible member the first hawser make the second circuit breaker trip bar actuator by the first hawser pull overcome the second circuit breaker trip bar actuator flexible member after be in lower position, now the second circuit breaker trip bar is positioned at higher position because losing the driving of the second circuit breaker trip bar actuator, thus the closing operation of the second circuit breaker can realize.
5., according to the mechanical interlocks of claim 2-4 described in one of them, it is characterized in that:
When the first circuit breaker is in "on" position, if the first hawser be connected between the first breaker main shaft location recognition part and the second circuit breaker trip bar actuator lost efficacy, now the second circuit breaker trip bar actuator is still by the driving of the second circuit breaker trip bar actuator flexible member, thus the second circuit breaker trip bar is depressed into lower position, thus the closing operation of the second circuit breaker cannot realize;
When the second circuit breaker is in "on" position, if the second hawser be connected between the second breaker main shaft location recognition part and the first circuit breaker trip bar actuator lost efficacy, now the first circuit breaker trip bar actuator is still by the driving of the first circuit breaker trip bar actuator flexible member, thus the first circuit breaker trip bar is depressed into lower position, thus the closing operation of the first circuit breaker cannot realize.
6. mechanical interlocks according to claim 2, is characterized in that: described first circuit breaker trip bar actuator flexible member and described second circuit breaker trip bar actuator flexible member are torsion spring, extension spring or stage clip.
7. mechanical interlocks according to claim 2, is characterized in that: described first breaker main shaft location recognition part flexible member and described second breaker main shaft location recognition part flexible member are torsion spring, extension spring or stage clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322230.0A CN103681032B (en) | 2012-09-03 | 2012-09-03 | For the mechanical interlocks of air circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210322230.0A CN103681032B (en) | 2012-09-03 | 2012-09-03 | For the mechanical interlocks of air circuit |
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| CN103681032A CN103681032A (en) | 2014-03-26 |
| CN103681032B true CN103681032B (en) | 2016-03-02 |
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| CN201210322230.0A Active CN103681032B (en) | 2012-09-03 | 2012-09-03 | For the mechanical interlocks of air circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106952791B (en) * | 2017-05-18 | 2019-04-09 | 江苏大全凯帆开关有限公司 | A kind of breaker interlock and the breaker group with interlock |
| CN107644755B (en) * | 2017-09-21 | 2024-03-26 | 德力西电气有限公司 | Circuit breaker interlocking mechanism |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202917349U (en) * | 2012-09-03 | 2013-05-01 | 施耐德电器工业公司 | Mechanical interlocking device for air circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227952A (en) * | 1991-03-08 | 1993-07-13 | Westinghouse Electric Corp. | Interlock device for circuit breakers |
| US6486421B1 (en) * | 2000-04-27 | 2002-11-26 | Eaton Corporation | Mechanical interlock with overtravel compensation for coordinating operation of circuit breakers |
| DE202006015517U1 (en) * | 2006-10-10 | 2006-12-14 | Moeller Gmbh | Mechanical safety mechanism is provided for coupled electrical power switching stages to prevent simultaneous operation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202917349U (en) * | 2012-09-03 | 2013-05-01 | 施耐德电器工业公司 | Mechanical interlocking device for air circuit breaker |
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