CN102376498B - Auxiliary alarm switch - Google Patents
Auxiliary alarm switch Download PDFInfo
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- CN102376498B CN102376498B CN201010260289.2A CN201010260289A CN102376498B CN 102376498 B CN102376498 B CN 102376498B CN 201010260289 A CN201010260289 A CN 201010260289A CN 102376498 B CN102376498 B CN 102376498B
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Abstract
The invention discloses an auxiliary alarm switch which comprises a casing, two micro switches, a handle, a coupling, a sign board, a first lever, a buckle, a second lever, a connecting rod and a test button. According to the invention, a novel auxiliary alarm switch with a combined structure is adopted and the two micro switches are combined with a driving mechanism to achieve the function of the auxiliary switch that the off/on state of a circuit breaker in an electrical line can be remotely indicated; the function of the alarm switch is achieved, that is to say, the turning of the sign board is alarmed and indicated and an alarm signal is transmitted when the circuit breaker in the electrical line is remotely indicated to freely trip as well as mechanical linkage of the test button is alarmed, that is to say, the alarming and the indication of the turning of the sign board of the alarm switch is detected and the output condition of the electrical signal is alarmed.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, more particularly, relate to the auxiliary alarm switch in circuit breaker subsidiary loop.
Background technology
Auxiliary alarm switch is a kind of external accessory of miniature circuit breaker, in the subsidiary loop of circuit breaker, provides a kind of index signal of working state of circuit breaker in a kind of mode of mechanical linkage to the external world.Auxiliary alarm switch has two kinds of functional characteristics of auxiliary switch, alarm switch:
1) be connected in the auxiliary switch in the subsidiary loop of circuit breaker, when main circuit contactor, the timesharing of circuit breaker, in the mode of mechanical linkage, drive auxiliary switch a kind of electrical equipment of connecting and disconnecting subsidiary loop contact simultaneously.
2) be connected in the alarm switch in the subsidiary loop of circuit breaker, interlock mode and the auxiliary switch of it and circuit breaker are different, it is when overload, short circuit, under voltage fault appear in circuit breaker, in the situation of breaker mechanism generation trip free, in mechanical linkage mode, drive the contact of alarm switch to change splitting or integrating state, output alarm signal and warning mark board flip displays red alarm.Therefore, auxiliary alarm switch just can reflect in the operating state of operating circuit breaker, comprises splitting or integrating and the trip free situation of circuit breaker, and using auxiliary alarm switch is a kind of method that obtains at a distance circuit breaker operation conditions.
Summary of the invention
The present invention is intended to propose a kind of novel auxiliary alarm switch.
According to one embodiment of the invention, a kind of auxiliary alarm switch is proposed, comprising: shell, sensitive switch, handle, shaft coupling, sign board, the first lever, tripping, the second lever, connecting rod and test button.
Shell comprises base and lid, and base all possesses hook and the groove of locating use with lid.Sensitive switch is placed on shell, and sensitive switch has cantilever, and sensitive switch is for the output of remote electric signal, to indicate the operating state of circuit breaker.Handle comprises rectangular shaft, fan-shaped projection and the extended serrated portion with circuit breaker handle interlock.Shaft coupling is fixed on base, shaft coupling comprise have step cylinder, be inserted into the rotation axis linking in circuit breaker tripping plate, outwardly directed the first rocking arm and outwardly directed the second rocking arm.Sign board is fixed on base, has cambered surface, the second galianconism of outwards giving prominence to, rectangle groove face and elastic component cylinder is installed.The first lever, is fixed on base and with sign board and is connected as a single entity, and the first lever has elastic component cylinder and cambered surface projection are installed.Tripping is rotatably fixed on base by fixing hole, tripping comprises rectangular axle main body, outwardly directed first long-armed and outwardly directed the first galianconism of root, there is buckling surface one end of rectangular axle main body, and the first galianconism makes the rectangle groove face snap close of tripping and sign board under elastic component pulling force.The second lever is fixed on base, and it is second long-armed that stretch out one end of the second lever, the second long-armed cantilever of pushing down sensitive switch.Connecting rod connects shaft coupling and the second lever, and as the interlock drive link between shaft coupling and the second lever, the rotation of shaft coupling passes to the second lever by connecting rod, and the second lever touches sensitive switch and changes electric signal output state.Test button has elastic component and lays frame and extended the 3rd long-armed, test button is placed on the top of tripping, press test button, the bottom of test button makes one end of tripping stressed, tripping rotation is triped, the first long-armed sensing shaft coupling drives shaft coupling rotation, and the 3rd long-armed the second galianconism to sign board is exerted pressure and made an angle of sign board rotation, and the long-armed drive shaft coupling of tripping first rotates.
In one embodiment, the first rocking arm points to the direction of tripping, coordinates with the first galianconism of tripping, drives tripping rotation that hasp is triped when shaft coupling rotates; The second rocking arm points to the direction of connecting rod.
In one embodiment, the cambered surface projection of the first lever provides reset function.
In one embodiment, elastic component is arranged on the elastic component of sign board and installs on the elastic component installation cylinder of cylinder and the first lever, and elastic component is connected as a single entity sign board and the first lever.
In one embodiment, on the first galianconism of tripping, have the cylindrical of protrusion, be subject to the elastic force of elastic component as stress point, make the rectangle groove face snap close on tripping and sign board, when the power of shaft coupling rotation is greater than this elastic force, tripping is triped from sign board.
In one embodiment, press test button, when one end that test button is pushed down tripping makes tripping rotation, long-armed the first rocking arm rotation of hooking shaft coupling of tripping first, drives shaft coupling to rotate together.
In one embodiment, on the second rocking arm of shaft coupling, there is a connecting hole; The second lever has a kidney slot.
In one embodiment, in the connecting hole of the second rocking arm of one end of connecting rod insertion shaft coupling, obtain moment, the other end of connecting rod slides in the kidney slot of the second lever, controls the running orbit of the second lever.
In one embodiment, after an angle of sign board rotation, flip displays redness is reported to the police.
The present invention adopts a kind of new combining structure to design auxiliary alarm switch, adopts two sensitive switches to add that a sets of transmission mechanism realizes auxiliary switch function in this auxiliary alarm switch---the splitting or integrating state of circuit breaker in remote indication electric wiring; Alarm switch function---in report to the police indication board turning and remote indication electric wiring, send alarm signal during circuit breaker generation trip free; The warning indication board turning of warning test button mechanical linkage---detection alarm switch and warning electric signal output situation.
Accompanying drawing explanation
The above and other features of the present invention, character and advantage become more obvious by the description by below in conjunction with drawings and Examples, and in the accompanying drawings, identical Reference numeral represents identical feature all the time, wherein:
Fig. 1 has disclosed the structural representation in normal operation position according to the auxiliary alarm switch of one embodiment of the invention.
Fig. 2 has disclosed according to the structural representation of the handle of the auxiliary alarm switch of one embodiment of the invention.
Fig. 3 has disclosed according to the structural representation of the shell of the auxiliary alarm switch of one embodiment of the invention.
Fig. 4 has disclosed according to the structural representation of the shaft coupling of the auxiliary alarm switch of one embodiment of the invention.
Fig. 5 has disclosed according to the structural representation after the sign board of the auxiliary alarm switch of one embodiment of the invention and the assembling of the first lever mated.
Fig. 6 has disclosed the tripping structural representation according to the auxiliary alarm switch of one embodiment of the invention.
Fig. 7 has disclosed according to the structural representation of the second lever of the auxiliary alarm switch of one embodiment of the invention.
Fig. 8 has disclosed according to the structural representation of the test button of the auxiliary alarm switch of one embodiment of the invention.
Fig. 9 has disclosed the assembly structure schematic diagram coordinating with circuit breaker according to the auxiliary alarm switch of one embodiment of the invention.
Figure 10 has disclosed according to the buckling surface structural representation of rectangular axle one end of the rectangle groove face of the sign board of the auxiliary alarm switch of one embodiment of the invention and tripping.
Figure 11 has disclosed the structural representation in alarm condition according to the auxiliary alarm switch of one embodiment of the invention.
Figure 12 has disclosed the locations of structures schematic diagram in test button operating state according to the auxiliary alarm switch of one embodiment of the invention.
Embodiment
Shown in figure 1, according to one embodiment of the invention, propose a kind of auxiliary alarm switch, comprising: shell 300, sensitive switch 100, handle 200, shaft coupling 400, sign board 500, the first lever 550, tripping 600, the second lever 700, connecting rod 750 and test button 800.
Shell 300 comprises base 302 and lid 304, and base 302 all possesses hook 310 and the groove 316 of locating use with lid 304.Sensitive switch 100 is placed on shell 300, and sensitive switch 100 has cantilever 102, and sensitive switch 100 is for the output of remote electric signal, to indicate the operating state of circuit breaker.Handle 200 comprises rectangular shaft 202, fan-shaped projection 204 and the extended serrated portion 206 with circuit breaker handle interlock.Shaft coupling 400 is fixed on base 302, shaft coupling 400 comprise have step cylinder 411, be inserted into the rotation axis 402 that links in circuit breaker tripping plate, outwardly directed the first Rocker arm 4 04 and outwardly directed the second Rocker arm 4 06.Sign board 500 is fixed on base 302, has cambered surface 502, the second galianconism 512 of outwards giving prominence to, rectangle groove face 513 and elastic component cylinder 504 is installed.The first lever 550, is fixed on base 302 and with sign board 500 and is connected as a single entity, and the first lever 550 has elastic component cylinder 552 and cambered surface projection 559 are installed.Tripping 600 is rotatably fixed on base 302 by fixing hole 602, tripping 600 comprises rectangular axle main body 601, root outwardly directed first long-armed 614 and outwardly directed the first galianconism 603, there are stressed rectangle groove face 513 snap closes that make tripping 600 and sign board 500 of buckling surface 605, the first galianconism 603 one end of rectangular axle main body 601.The second lever 700 is fixed on base 302, and the second long-armed 708, the second long-armed 708 cantilever 102 of pushing down sensitive switch 100 is stretched out in one end of the second lever 700.Connecting rod 750 connects shaft coupling 400 and the second lever 700, as the interlock drive link between shaft coupling 400 and the second lever 700, the rotation of shaft coupling 400 passes to the second lever 700, the second levers 700 by connecting rod 750 and touches sensitive switch 100 change electric signal output states.Test button 800 has elastic component and lays frame 802 and the extended the 3rd long-armed 815, test button 800 is placed on the top of tripping 600, press test button 800, the bottom of test button 800 makes one end of tripping 600 stressed, tripping 600 rotations are triped, the second galianconism 512 of the 3rd long-armed 815 pairs of sign boards 500 is exerted pressure and is made an angle of sign board 500 rotations, and first long-armed 614 of tripping 600 is pointed to shaft coupling 400 and driven shaft coupling 400 rotations.Elastic component 900 is for connecting above-mentioned parts.
Shown in figure 2-Fig. 8, further disclosed the structure of each the concrete parts in this embodiment.
Shown in figure 2, handle 200 possesses the rectangular shaft 202 with circuit breaker handle interlock, also comprises for realizing fan-shaped projection 204 and the extended serrated portion 206 of miscellaneous function.
Shown in figure 3, shell 300 comprises base 302 and lid 304, and base 302 possesses respectively inner components and the positioning element of self with lid 304: hook 310, groove 316.These positioning elements coordinate assembling and for the assembling that coordinates of outside and circuit breaker.On the lateral wall of base 302, also there is boss 312.
Shown in figure 4, shaft coupling 400 comprise have step cylinder 411, can insert the rotation axis 402 and two the outwardly directed rocking arms that in circuit breaker tripping plate, link, be respectively the first Rocker arm 4 04 and the second Rocker arm 4 06, shaft coupling 400 is fixed on base 302.The first Rocker arm 4 04 stretches to tripping 600, drives tripping 600 rotations that hasp is triped when shaft coupling 400 rotation, sends board turning and reports to the police, and the second Rocker arm 4 06 drives drive link 700 output alarm electric signals.
Shown in figure 5, sign board 500 and the first lever 550 are connected as a single entity.Sign board 500 has cambered surface 502, outwards outstanding the second galianconism 512, rectangle groove face 513 and elastic component installed cylinder 504.The first lever 550 forms integrative-structure with sign board 500, and the first lever 550 has the cambered surface projection 559 that elastic component is installed cylinder 552 and had reset function.Sign board 500 and the first lever 550 have character pair to combine, and are arranged on elastic component installation cylinder 504 and 552 two parts are coordinated and are fixed on base 302 with elastic component.
Shown in figure 6, tripping 600 is fixed on base 302 by fixing hole 602, and tripping 600 comprises rectangular axle main body 601, and one end of rectangular axle main body 601 has buckling surface 605.Tripping 600 also comprises that one is long and the other is short two outwardly directed arms, on the first galianconism 603, there is a protrusion cylindrical 604 to be subject to the anticlockwise power of elastic component as stress point, this power makes tripping 600 and the rectangle groove face 513 on sign board 500 carry out snap close, when the power of shaft coupling 400 rotations is greater than this power, tripping 600 is triped from sign board 500.When test button 800 is pressed, test button 800 produces an one end of defeating tripping 600 vertically downward, and the first Rocker arm 4 04 rotation of shaft coupling 400 is hooked in first long-armed 614 of tripping 600, drives shaft coupling 400 to rotate together.
Shown in figure 7, the second lever 700 is fixed on base 302 by location hole 702, and the second long-armed 708, the second long-armed 708 cantilever 102 of pushing down sensitive switch 100 is stretched out in one end of the second lever 700.When shaft coupling 400 rotates, by connecting rod 750, drive the second lever 700 to rotate, utilize the cantilever 102 of the second long-armed 708 shake-up sensitive switches 100, by sensitive switch 100, change electric signal output states.Connecting rod 750 is as the interlock drive link between shaft coupling 400 and the second lever 700, in the connecting hole 408 of the second Rocker arm 4 06 of one end insertion shaft coupling 400 of connecting rod 750, obtain moment, the other end of connecting rod 750 slides in the kidney slot 707 of the second lever 700, controls the running orbit of the second lever 700.
Shown in figure 8, test button 800 have elastic component lay frame 802 and stretch out the 3rd long-armed 815, when test button 800 is pressed, while giving with power vertically downward of 800 1 of test buttons, the bottom of test button 800 makes the stressed rotation in one end of tripping 600 and trips, and the second galianconism 512 of giving prominence on the 3rd long-armed 815 pairs of sign boards 500 of test button 800 applies a pressure and makes sign board 500 be rotated counterclockwise an angle and flip displays red alarm.Tripping 600 is in rotation, the first Rocker arm 4 04 of shaft coupling 400 is hooked in tripping 600 first long-armed 614, drive shaft coupling 400 rotations, the second Rocker arm 4 06 of shaft coupling 400 drives kinematic link 750 and the second lever 700 to rotate, and then drive sensitive switch 100 to touch, change contact splitting or integrating State-output warning electric signal.
The schematic diagram that the auxiliary alarm switch that Fig. 9-Figure 10 has disclosed one embodiment of the invention coordinates with the schematic diagram of circuit breaker assembling and the buckling surface of the rectangle groove face of sign board and rectangular axle one end of tripping.
Figure 11-Figure 12 has disclosed the structural representation in alarm condition and test button operating state according to the auxiliary alarm switch of one embodiment of the invention, and the operation principle of this auxiliary alarm switch is as follows:
When main circuit normally moves, auxiliary alarm switch handle is put in circuit breaker co-bit, the cylindrical of handle is pushed down the cambered surface projection of the first lever, make sign board pull-up under the effect of elastic component, tripping is simultaneously interlocked under the pulling force of another elastic component in sign board rectangle groove face, warning window display circuit normally moves, at this moment shaft coupling does not rotate non-moment output, and the second lever does not rotate does not have alarm signal output.At this moment the fan-shaped bump of handle makes microswitch change splitting or integrating State-output auxiliary signal.
When main circuit normally moves, auxiliary alarm switch handle can be done normal splitting or integrating operation with circuit breaker handle and drive auxiliary signal conversion.
Shown in Figure 11: handle upset when circuit breaker trip free, the rotation of shaft coupling clockwise direction, the first rocking arm promotes tripping and trips, the sign board being lockable is because the rotation of tripping is triped, sign board and the first lever are under the effect of a pulling force and overturn, at this moment realized direction board board turning and reported to the police, the second rocking arm applies a moment to the second lever, makes sensitive switch cantilever rotate output electric signal and sends the indication of reporting to the police.After fault is got rid of, circuit breaker again closes a floodgate and drives auxiliary alarm switch handle to do counterclockwise rotation, handle cylindrical is pushed down the reset projection of the first lever, the first lever red marker that turns clockwise centered by locating shaft with sign board under the effect of elastic component is hidden thereupon, at this moment tripping locks along with the rotation of sign board slips in the hasp of rectangular channel face simultaneously under the effect of elastic component, and after tripping and sign board locking, warning window demonstration electric wiring normally moves.
Shown in Figure 12, show that checkout gear can detect the examination survey time road that can the warning function of auxiliary alarm switch warning system be realized, the running of this test button, when a power is vertically downward applied on test button, the bottom of test button and the 3rd long-armed the acting on respectively on one end of tripping and the second galianconism of sign board of stretching out, when the bottom of test button acts on one end of tripping, tripping is rotated counterclockwise and trips, first long-armed the second galianconism of pushing down sign board protrusion that test button stretches out is rotated counterclockwise display alarm by sign board, when tripping is simultaneously rotated counterclockwise, its first long-armed first rocking arm that can promote shaft coupling turns clockwise, the second rocking arm of shaft coupling rotarily drives kinematic link thereupon and the second lever rotates output alarm electric signal.Cancel after the power being applied on test button vertically downward, under the effect of three elastic components, tripping and sign board set back, and test process operation is complete.
Shown in figure 3, Fig. 9, base, cover housing and with being fixed of circuit breaker adopt hook connect with groove and rectangular shaft, boss and extrapolation connecting piece, spacing, fixing, the structure of this hook and groove and rectangular shaft, boss and extrapolation connecting piece connect make auxiliary alarm switch base, mount cover join firmly, stable and with the coordinating equally very firmly of circuit breaker, stable.
The present invention adopts a kind of new combining structure to design auxiliary alarm switch, adopts two sensitive switches to add that a sets of transmission mechanism realizes auxiliary switch function in this auxiliary alarm switch---the splitting or integrating state of circuit breaker in remote indication electric wiring; Alarm switch function---in report to the police indication board turning and remote indication electric wiring, send alarm signal during circuit breaker generation trip free; The warning indication board turning of warning test button mechanical linkage---detection alarm switch and warning electric signal output situation.
Above-described embodiment is to provide to being familiar with person in the art and realizes or use of the present invention; those skilled in the art can be without departing from the present invention in the case of the inventive idea; above-described embodiment is made to various modifications or variation; thereby protection scope of the present invention do not limit by above-described embodiment, and it should be the maximum magnitude that meets the inventive features that claims mention.
Claims (5)
1. an auxiliary alarm switch, is characterized in that, comprising:
Shell, comprises base and lid, and base all possesses hook and the groove of locating use with lid;
Sensitive switch, is placed on shell, and sensitive switch has cantilever, and sensitive switch is for the output of remote electric signal, to indicate the operating state of circuit breaker;
Handle, comprises rectangular shaft, fan-shaped projection and extended serrated portion with circuit breaker handle interlock;
Shaft coupling, be fixed on base, shaft coupling comprise have step cylinder, be inserted into the rotation axis linking in circuit breaker tripping plate, outwardly directed the first rocking arm and outwardly directed the second rocking arm, the first rocking arm points to the direction of tripping, coordinate with the first galianconism of tripping, when shaft coupling rotates, drive tripping rotation that hasp is triped, the second rocking arm points to the direction of connecting rod;
Sign board, is fixed on base, has cambered surface, the second galianconism of outwards giving prominence to, rectangle groove face and elastic component cylinder is installed;
The first lever, is fixed on base and with sign board assembling and is connected as a single entity, and the first lever has elastic component cylinder and cambered surface projection are installed, and described cambered surface projection provides reset function;
Elastic component, the elastic component that is arranged on sign board is installed on the elastic component installation cylinder of cylinder and the first lever, and elastic component is connected as a single entity sign board and the first lever;
Tripping, by fixing hole, be rotatably fixed on base, tripping comprises rectangular axle main body, outwardly directed first long-armed and outwardly directed the first galianconism, and there is buckling surface one end of rectangular axle main body, the stressed rectangle groove face snap close that makes tripping and sign board of the first galianconism;
The second lever, is fixed on base, and it is second long-armed that stretch out one end of the second lever, the second long-armed cantilever of pushing down sensitive switch;
Connecting rod, connects shaft coupling and the second lever, and as the interlock drive link between shaft coupling and the second lever, the rotation of shaft coupling passes to the second lever by connecting rod, and the second lever touches sensitive switch and changes electric signal output state;
Test button, there is elastic component and lay frame and extended the 3rd long-armed, test button is placed on the top of tripping, press test button, the bottom of test button makes one end of tripping stressed, tripping rotation is triped, and the 3rd long-armed the second galianconism to sign board is exerted pressure and made an angle of sign board rotation, and the long-armed sensing shaft coupling of tripping first simultaneously drives shaft coupling rotation.
2. auxiliary alarm switch as claimed in claim 1, is characterized in that,
On the first galianconism of tripping, have the cylindrical of protrusion, be subject to the elastic force of elastic component as stress point, make the rectangle groove face snap close on tripping and sign board, when the power of shaft coupling rotation is greater than this elastic force, tripping is triped from sign board.
3. auxiliary alarm switch as claimed in claim 1, is characterized in that,
Press test button, when one end that test button is pushed down tripping makes tripping rotation, long-armed the first rocking arm rotation of hooking shaft coupling of tripping first, drives shaft coupling to rotate together.
4. auxiliary alarm switch as claimed in claim 1, is characterized in that,
On the second rocking arm of shaft coupling, there is a connecting hole;
The second lever has a kidney slot;
In the connecting hole of the second rocking arm of one end insertion shaft coupling of connecting rod, obtain moment, the other end of connecting rod slides in the kidney slot of the second lever, controls the running orbit of the second lever.
5. auxiliary alarm switch as claimed in claim 1, is characterized in that,
After an angle of sign board rotation, flip displays redness is reported to the police.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010260289.2A CN102376498B (en) | 2010-08-24 | 2010-08-24 | Auxiliary alarm switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010260289.2A CN102376498B (en) | 2010-08-24 | 2010-08-24 | Auxiliary alarm switch |
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| Publication Number | Publication Date |
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| CN102376498A CN102376498A (en) | 2012-03-14 |
| CN102376498B true CN102376498B (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010260289.2A Active CN102376498B (en) | 2010-08-24 | 2010-08-24 | Auxiliary alarm switch |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354392A (en) * | 2013-07-30 | 2013-10-16 | 深圳市中鹏电子有限公司 | Remote signal transmission apparatus for monitoring air switch state |
| CN106783417B (en) * | 2015-11-23 | 2020-08-11 | 森萨塔科技公司 | Circuit breaker |
| CN106206100B (en) * | 2016-08-31 | 2022-01-18 | 湖北盛佳电器设备有限公司 | Trigger mechanism and automatic switching-on device with same |
| KR101904879B1 (en) | 2017-04-20 | 2018-10-08 | 엘에스산전 주식회사 | Magnetic trip device of air circuit breaker |
| CN106981404B (en) * | 2017-05-19 | 2020-05-15 | 德力西电气有限公司 | Accessory of circuit breaker |
| CN114121512B (en) * | 2021-12-25 | 2023-12-29 | 浙江新控电气科技有限公司 | Quick operation module for controlling and protecting switch electric appliance |
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|---|---|---|---|---|
| DE3149374A1 (en) * | 1981-12-12 | 1983-06-16 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Auxiliary and signal switch |
| EP1065691A1 (en) * | 1999-07-02 | 2001-01-03 | Schneider Electric Industries SA | Auxiliary signalling module for an electrical apparatus with trip device |
| CN201084656Y (en) * | 2007-08-10 | 2008-07-09 | 上海电器股份有限公司人民电器厂 | An auxiliary alarm switch used in double-break plastic-housing breakers |
| CN201478212U (en) * | 2009-09-15 | 2010-05-19 | 上海诺雅克电气有限公司 | Auxiliary contact device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS595540A (en) * | 1982-06-30 | 1984-01-12 | 松下電工株式会社 | Warning device for circuit breaker |
| JP3246322B2 (en) * | 1996-03-29 | 2002-01-15 | 富士電機株式会社 | Circuit breaker alarm |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3149374A1 (en) * | 1981-12-12 | 1983-06-16 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Auxiliary and signal switch |
| EP1065691A1 (en) * | 1999-07-02 | 2001-01-03 | Schneider Electric Industries SA | Auxiliary signalling module for an electrical apparatus with trip device |
| CN201084656Y (en) * | 2007-08-10 | 2008-07-09 | 上海电器股份有限公司人民电器厂 | An auxiliary alarm switch used in double-break plastic-housing breakers |
| CN201478212U (en) * | 2009-09-15 | 2010-05-19 | 上海诺雅克电气有限公司 | Auxiliary contact device |
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