CN108922834B - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN108922834B CN108922834B CN201810661332.2A CN201810661332A CN108922834B CN 108922834 B CN108922834 B CN 108922834B CN 201810661332 A CN201810661332 A CN 201810661332A CN 108922834 B CN108922834 B CN 108922834B
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- plate
- pushing
- driving
- section
- circuit breaker
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- 238000007789 sealing Methods 0.000 claims abstract description 55
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
Landscapes
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Breakers (AREA)
Abstract
The invention relates to a circuit breaker, which comprises a front sealing plate and a rear sealing plate, wherein a brake separating buckle plate is arranged on the rear sealing plate in a sliding way along the left-right direction, a pushing piece capable of moving towards and away from the brake separating buckle plate in a reciprocating way is arranged on the rear sealing plate in a sliding way, a driving structure which is matched with the pushing piece in a pushing way so as to enable the pushing piece to move towards the brake separating buckle plate and push the brake separating buckle plate to realize brake separating of the circuit breaker is rotatably arranged on the front sealing plate, the driving structure is provided with a driving surface which is used for being driven by an emergency brake separating button on a switch cabinet to act, the driving structure is also provided with a pushing surface which is matched with the pushing piece in a pushing way, an included angle is arranged between the driving surface and the pushing surface so that the driving structure can change the direction to realize the pushing of the pushing piece, and the pushing piece is also provided with a reset spring. The driving structure directly drives the push rod to act, so that the safety and the practicability are higher. The setting of the included angle can realize transmission reversing when the driving structure is stressed, so that the transmission working condition of the cabinet body is met.
Description
Technical Field
The present invention relates to a circuit breaker.
Background
The accident that the control power supply is powered down and the brake-separating electromagnet is damaged easily occurs in the operation process of the high-voltage circuit breaker, so that the high-voltage circuit breaker cannot perform normal brake-separating operation. The circuit breaker among the prior art, as shown in fig. 1, the circuit breaker has preceding shrouding 1 and back shrouding 2, and the front side of preceding shrouding 1 has panel 9, installs operating device between panel 9 and the back shrouding 2, and operating device's breaking pinch plate slides along the face of back shrouding, and preceding shrouding 1 is located the top of back shrouding 2, and the two links together through diaphragm 10, has certain contained angle between the face of preceding shrouding 1 and the face of back shrouding 2 simultaneously. The prior emergency solution is to open the cabinet door of the switch cabinet, extend a hand into the cabinet to press the opening button of the high-voltage circuit breaker, and forcedly perform manual emergency opening operation on the high-voltage circuit breaker, but the high-voltage circuit breaker is too close to the high-voltage circuit breaker without good precautions, so personal injury is easily caused.
Disclosure of Invention
The invention aims to provide a circuit breaker so as to solve the problem of lower safety in emergency opening of the circuit breaker in the prior art.
In order to achieve the above purpose, the technical scheme of the circuit breaker of the invention is as follows:
the breaker comprises a front sealing plate and a rear sealing plate, wherein the front sealing plate is positioned at the front upper side of the rear sealing plate and inclines forwards and upwards, a brake separating buckle plate is arranged on the rear sealing plate in a sliding mode along the left-right direction, a pushing piece capable of moving towards and away from the brake separating buckle plate in a reciprocating mode is arranged on the rear sealing plate in a sliding mode, a driving structure matched with the pushing piece in a pushing mode is rotatably arranged on the front sealing plate so that the pushing piece moves towards the brake separating buckle plate and pushes the brake separating buckle plate to realize brake separation of the breaker, the driving structure is provided with a driving surface used for being driven by an emergency brake separating button on a switch cabinet to act, the driving structure is further provided with a pushing surface matched with the pushing piece in a pushing mode, an included angle is formed between the driving surface and the pushing surface so that the driving structure is reversed to realize pushing of the pushing piece, and a reset spring used for applying acting force for moving back to the brake separating buckle plate to the pushing piece is further arranged on the pushing piece.
Further, in order to match the situation that the emergency brake separating button is perpendicular to the moving direction of the pushing rod, the pushing effect is guaranteed, force application and force transmission are facilitated, and the set included angle is 90 degrees.
Further, in order to simplify the structure, easy to assemble and make, the drive structure is the drive plate of rotation setting on preceding shrouding, the drive plate is whole to be L shape, including diaphragm section and indulge the board section, the drive face is formed by the board section from the back to indulge board section one side face of diaphragm section, and the drive face is formed by the board section from the back to diaphragm section one side face of indulging board section, still is equipped with on the drive plate and all parallels in order to realize with preceding shrouding's normal running fit's hinge hole with the board of diaphragm section and indulging board section.
Further, for the convenience of processing and manufacturing, the two side plate surfaces of the driving plate along the axis direction of the hinge hole are provided with hinge plates, and the hinge hole is arranged on the hinge plates.
Further, in order to facilitate the rotation assembly of the drive plate, the front sealing plate comprises a plate body and a fixing piece arranged on the plate body, the drive plate is rotationally assembled on the fixing piece, and the fixing piece is provided with a connecting hole which coaxially extends from the hinge hole to realize the rotation assembly of the hinge hole and the hinge hole through a hinge rod.
Further, in order to prevent to interfere with other spare parts, make holistic structural strength higher moreover, the mounting is the L shaped plate, and the perpendicular section of L shaped plate has the mounting hole that is used for with preceding shrouding fixed connection, and the connecting hole sets up on the flat section of L shaped plate.
Further, in order to facilitate the rotation assembly of the driving plate, the vertical section plate surface of the L-shaped plate is flush with the plate surface of the front sealing plate, and the flat section of the L-shaped plate is perpendicular to the plate surface of the rear sealing plate so that the driving plate is in a plate surface vertical posture.
Further, in order to facilitate assembly of the ejector rod, the circuit breaker further comprises a U-shaped frame fixed on the rear sealing plate, the ejector component is an ejector rod transversely penetrating through two side walls of the U-shaped frame, the ejector rod is further provided with a stop pin used for being in limit fit with the U-shaped frame, and the reset spring is sleeved on the ejector rod and located between the stop pin and the side walls of the U-shaped frame.
Further, in order to realize the pushing of the pushing rod and avoid the interference of spare part, the lower part of preceding shrouding is equipped with the holding tank that supplies the drive plate to pass, the longitudinal plate section of drive plate has the pushing part of extending to the extending position department of the travel path of pushing away the piece downwards, is equipped with the groove of dodging that is used for dodging the longitudinal plate section of drive plate on the diaphragm between preceding shrouding and the back shrouding.
The beneficial effects of the invention are as follows: compared with the prior art, the circuit breaker has the advantages that the pushing piece is arranged on the rear sealing plate, the pushing piece is driven by the driving structure, in the actual working process, an operator can operate the emergency brake-separating button on the outer side of the cabinet body, the driving surface of the driving structure is pushed by the emergency brake-separating button, the driving surface drives the pushing surface to act, the pushing piece is pushed to move so as to push the brake-separating buckle plate, the emergency brake-separating operation is finally realized, the structure is simple, the operator does not need to open the cabinet door, the pushing rod can be directly driven by the driving structure to act, and the safety and the practicability are high. Further, the setting of the included angle between the driving surface and the pushing surface can enable the driving structure to realize transmission reversing when being stressed, so that the working condition that the movement of the opening pinch plate in the cabinet body and the movement of the emergency opening button are not in the same direction can be met.
Drawings
Fig. 1 is a schematic diagram of a circuit breaker in the prior art;
fig. 2 is a schematic structural view of an embodiment of a circuit breaker of the present invention;
FIG. 3 is a schematic diagram of the emergency brake release mechanism of FIG. 2;
FIG. 4 is a schematic view of the assembled structure of the ejector pin, return spring and U-shaped frame of FIG. 3;
FIG. 5 is a schematic view of the U-shaped frame of FIG. 4;
FIG. 6 is a schematic diagram of the driving plate in FIG. 3;
fig. 7 is a schematic view of the structure of the L-shaped plate in fig. 3.
Reference numerals illustrate: 1-a front sealing plate; 2-a rear sealing plate; 3-separating brake buckle plate; 4-pushing the rod; 5-a return spring; 6-U-shaped frames; 7-a drive plate; an 8-L-shaped plate; 41-stop pin; 61-perforating; 62-fixing holes; 71-a transverse plate section; 72-longitudinal plate sections; 73—a driving surface; 74-pushing surface; 75-hinge plates; 76-hinge holes; 81-vertical section; 82-flat sections; 83-connecting holes; 84-mounting holes; 9-a panel; 10-a transverse plate; 11-emergency brake release mechanism.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 2 to 7, a specific embodiment of the circuit breaker of the invention comprises a front sealing plate, a rear sealing plate and a transverse plate, wherein a brake separating buckle plate is arranged on the rear sealing plate, an emergency brake separating mechanism 11 is arranged between the front sealing plate and the rear sealing plate of the circuit breaker, and the emergency brake separating mechanism 11 is applied to an operating mechanism between a panel 9 and the rear sealing plate 2 of the circuit breaker in the emergency brake separating process of the circuit breaker, and mainly acts on the brake separating buckle plate 3 of the operating mechanism to directly drive the brake separating buckle plate 3 to act under the emergency condition so as to realize brake separating of the circuit breaker. The brake separating buckle plate 3 moves between the panel and the rear sealing plate 2 along the left-right direction, wherein the brake separating buckle plate 3 can drive the operating mechanism to separate brake when moving rightwards. The front sealing plate 1 of the circuit breaker is arranged above the panel, the front sealing plate 1 is connected with the rear sealing plate 2 through a transverse plate 10, the rear sealing plate 2 is arranged in a vertical extending mode, and the upper side of the front sealing plate 1 extends forwards.
In this embodiment, the emergency brake release mechanism includes a pushing member, a return spring 5, a driving structure, a fixing member, a U-shaped frame 6, etc., wherein a fixing hole 62 is provided on a bottom wall of the U-shaped frame 6, the U-shaped frame 6 is fixed on the rear sealing plate 2 through bolting, and two arms of the U-shaped frame are coaxially provided with through holes 61, and the two through holes 61 are located at an extending position of a moving path of the brake release buckle 3.
The pushing member is a pushing rod 4, in the actual use process, the pushing rod 4 is inserted into the through hole 61, and can reciprocate in the through hole 61 towards the opening pinch plate 3 and away from the opening pinch plate 3 along the left-right direction, and can be pushed against the opening pinch plate 3 in the moving process towards the opening pinch plate 3 so as to open the operation mechanism. Meanwhile, a stop pin 41 is arranged on the rod body of the push rod 4 between the two arms of the U-shaped frame 6, and the length of the stop pin 41 is larger than the diameter of the through hole 61, so that the push rod 4 can be prevented from being pulled out of the through hole 61. Meanwhile, a return spring 5 is arranged between one of the blocking pins 41 and the side arm of the U-shaped frame 6 in a pressing mode, and the return spring 5 is a pressure spring in the embodiment and is used for applying a force to the push rod 4 for moving leftwards back to the brake separating buckle plate 3, so that the push rod 4 can be kept separated from the brake separating buckle plate 3 when no external force is pushed.
The pushing rod 4 is pushed by the driving structure to move towards the brake separating buckle plate 3. For the driving structure, in this embodiment, the driving structure is hinged to the front sealing plate 1, and meanwhile, the driving structure has a pushing surface 74 for being in pushing fit with the pushing rod 4, and a driving surface 73 for being driven by an emergency brake release button on the switch cabinet to move towards the brake release buckle plate 3 and push the brake release buckle plate 3 to realize brake release of the circuit breaker. For the switch cabinet, since the brake release buckle 3 moves in the left-right direction and the emergency brake release button moves in the front-back direction, in this embodiment, in order to achieve the movement of the brake release buckle 3 driven by the action of the emergency brake release button, an included angle is set between the driving surface 73 and the pushing surface 74 to achieve the reversing of the driving structure, so as to achieve the pushing of the pushing piece. Of course, in order to better ensure the pushing effect and more facilitate force application and force transmission, the included angle is set to be 90 degrees. In this embodiment, for simplifying the structure, the driving structure is the driving plate 7, the driving plate 7 is integrally L-shaped and comprises a transverse plate section 71 and a longitudinal plate section 72, wherein the driving surface 73 is formed by a side plate surface of the transverse plate section 71 facing away from the longitudinal plate section 72, and the driving surface 73 is formed by a side plate surface of the longitudinal plate section 72 facing away from the transverse plate section 71. And the driving plate 7 is also provided with a hinge hole 76 which is parallel to the plate surfaces of the transverse plate section 71 and the longitudinal plate section 72 so as to realize the rotation assembly with the front sealing plate 1. The arrangement can realize that in the actual operation process, an external emergency brake release button is pressed, the emergency brake release button pushes the driving surface 73 to turn backwards, the pushing surface 74 is further driven to turn right, the pushing surface 74 is matched with the pushing rod 4 in the turning process, and the brake release buckle plate 3 is driven to act to realize brake release of the circuit breaker. The hinge plates 75 are arranged on the two side plate surfaces of the driving plate 7 along the axis direction of the hinge holes 76, the hinge holes 76 are arranged on the hinge plates 75, so that the hinge plates can be conveniently manufactured, and in the actual installation process, the hinge rods directly penetrate through the hinge holes 76, so that the hinge holes 76 do not need to be arranged on the driving plate 7.
Meanwhile, in this embodiment, in order to facilitate the rotation assembly of the driving plate 7, a fixing member is further provided on the front sealing plate 1, and the fixing member has a connection hole 83 extending coaxially with the hinge hole 76 to enable the hinge hole 76 to be assembled together by rotation of the hinge rod. The drive plate 7 is rotatably assembled relative to the fixing member by the hinge rod penetrating the connecting hole 83 and the hinge hole 76. In this embodiment, in order to facilitate the installation of the driving plate 7 and to make the structure of the fixing member meet the installation requirement in the circuit breaker, the fixing member is an L-shaped plate 8, the vertical section 81 of the L-shaped plate 8 has an installation hole 84 fixedly assembled with the rear plate surface of the front sealing plate 1, and the connection hole 83 is disposed on the flat section 82 of the L-shaped plate 8. This facilitates the installation of the drive plate 7. Meanwhile, the flat section 82 of the L-shaped plate 8 extends forwards to form a front plate surface of the front sealing plate 1, and the corresponding connecting hole 83 is also positioned in front of the front sealing plate 1, so that a certain distance is reserved between a cabinet door of the switch cabinet and the front sealing plate 1, and in order to ensure that the emergency brake release button can be stably and well contacted with driving, the driving plate 7 is arranged to protrude out of the front sealing plate 1, and the distance between the emergency brake release button and the driving plate 7 is shortened.
In the case of the L-shaped plate 8, since the front sealing plate 1 is a sloping plate with the upper side sloping forward, in order to enable the driving plate 7 to rotate about the vertical axis, in this embodiment, the extending direction of the vertical section 81 of the L-shaped plate 8 coincides with the sloping direction of the front sealing plate 1, and the extending direction of the flat section 82 of the L-shaped plate 8 is perpendicular to the plate surface of the rear sealing plate 2.
Meanwhile, in order to avoid the parts positioned on the front side of the panel in the switch cabinet, in the embodiment, the lower part of the front sealing plate 1 is provided with a containing groove with a downward opening, the flat section 82 of the fixing plate is positioned at the bottom of the upper side groove of the containing groove, and meanwhile, the driving plate 7 is positioned in the containing groove, so that the driving plate 7 can be moved upwards integrally, interference with other parts is prevented, and an interval is reserved between the groove wall of the containing groove and the pushing surface 74 of the driving structure, so that the driving plate 7 can be turned over conveniently. In the present embodiment, since the driving plate 7 is located above the ejector pin 4, in order to achieve the push fit between the driving plate 7 and the ejector pin 4, the longitudinal plate section 72 of the driving plate 7 has a push portion that protrudes downward to be interposed in the extending path of the movement of the ejector pin 4. Meanwhile, in order to realize the overturning of the longitudinal plate section 72, an avoidance groove for the pushing part to pass through and overturn along the left-right direction is also arranged on the transverse plate.
In the actual working process, if an emergency situation needs to be broken, the emergency breaking button is operated to push the transverse plate section 71 of the driving plate 7, the transverse plate section 71 can drive the longitudinal plate section 72 to turn right by turning backwards around the hinging rod, and then the push rod 4 can be pushed to overcome the acting force of the reset spring 5 to move right, so that the breaking pinch plate 3 is pushed to break the breaker. The device directly acts on the breaking pinch plate 3, is not easy to fail, has high stability, simple structure and convenient use.
In other embodiments, the pushing member may be a rod structure or a block structure; the return spring can be a compression spring or a tension spring.
In other embodiments, when expanding to other switch cabinets, the size of the set included angle can be adjusted arbitrarily according to the included angle between the actual emergency brake-separating button and the moving direction of the push rod.
In other embodiments, the driving member may be in the form of a driving block, and only the driving surface and the pushing surface need to be guaranteed; the hinge holes may be directly provided on the transverse or longitudinal plate sections of the driving plate; the hinge rod can be directly welded on the front sealing plate without designing a fixing piece.
In other embodiments, the guiding groove may be directly formed on the rear sealing plate, and the pushing member may be provided with a guiding piece assembled with the guiding groove in a guiding manner, so as to realize guiding movement. At this time, the return spring may be disposed between the pushing member and the front seal plate.
Claims (5)
1. The circuit breaker, including preceding shrouding and back shrouding, preceding shrouding is located the place ahead upside of back shrouding and leans forward the top, and the last left and right sides of following of back shrouding slides and disposes the brake separating buckle, its characterized in that: the rear sealing plate is provided with a pushing piece capable of moving towards and away from the opening pinch plate in a sliding manner, the front sealing plate is rotatably provided with a driving structure which is matched with the pushing piece in a pushing manner so as to enable the pushing piece to move towards the opening pinch plate and push the opening pinch plate to realize opening of the circuit breaker, the driving structure is provided with a driving surface which is used for being driven by an emergency opening button on the switch cabinet to act, the driving structure is also provided with a pushing surface which is matched with the pushing piece in a pushing manner, a set included angle is formed between the driving surface and the pushing surface so as to enable the driving structure to change the direction to realize the pushing of the pushing piece, and the pushing piece is also provided with a reset spring which is used for applying an acting force for applying back movement of the opening pinch plate to the pushing piece; the driving structure is a driving plate rotationally arranged on the front sealing plate, the driving plate is integrally L-shaped and comprises a transverse plate section and a longitudinal plate section, the driving surface is formed by a side plate surface of the transverse plate section, which is opposite to the longitudinal plate section, the pushing surface is formed by a side plate surface of the longitudinal plate section, which is opposite to the transverse plate section, and the driving plate is also provided with a hinge hole which is parallel to the plate surfaces of the transverse plate section and the longitudinal plate section so as to realize the rotational fit with the front sealing plate; the front sealing plate comprises a plate body and a fixing piece arranged on the plate body, the driving plate is rotationally assembled on the fixing piece, and the fixing piece is provided with a connecting hole which extends coaxially with the hinge hole so as to be rotationally assembled with the hinge hole through a hinge rod; the fixing piece is an L-shaped plate, the vertical section of the L-shaped plate is provided with a mounting hole for fixedly connecting with the front sealing plate, and the connecting hole is arranged on the flat section of the L-shaped plate;
the included angle between two folds of the L-shaped plate is as follows: the perpendicular section face of L shaped plate flushes with the face of preceding shrouding, and the flat section of L shaped plate is perpendicular with the face of back shrouding in order to make the drive plate be the vertical gesture setting of face.
2. The circuit breaker according to claim 1, characterized in that: the set included angle is 90 degrees.
3. A circuit breaker according to claim 1 or 2, characterized in that: and the two side plate surfaces of the driving plate along the axis direction of the hinge hole are provided with hinge plates, and the hinge hole is arranged on the hinge plates.
4. A circuit breaker according to claim 1 or 2, characterized in that: the circuit breaker is still including fixing the U-shaped frame on the back shrouding, the pushing away the push rod of dress on the both sides wall of U-shaped frame is worn transversely to push away to the piece, still be equipped with on the push rod be used for with the spacing complex backing pin of U-shaped frame, reset spring cover is established on the push rod and is located the position between backing pin and the lateral wall of U-shaped frame.
5. A circuit breaker according to claim 1 or 2, characterized in that: the lower part of the front sealing plate is provided with an accommodating groove for the driving plate to pass through, the longitudinal plate section of the driving plate is provided with a pushing part which extends downwards to the extending position of the moving path of the pushing part, and a transverse plate between the front sealing plate and the rear sealing plate is provided with an avoidance groove for avoiding the longitudinal plate section of the driving plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810661332.2A CN108922834B (en) | 2018-06-25 | 2018-06-25 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810661332.2A CN108922834B (en) | 2018-06-25 | 2018-06-25 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108922834A CN108922834A (en) | 2018-11-30 |
| CN108922834B true CN108922834B (en) | 2024-01-19 |
Family
ID=64421123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810661332.2A Active CN108922834B (en) | 2018-06-25 | 2018-06-25 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108922834B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201311869Y (en) * | 2008-11-24 | 2009-09-16 | 浙江纪元电气集团有限公司 | ZN63A-12 indoor vacuum circuit breaker |
| CN104183419A (en) * | 2014-09-11 | 2014-12-03 | 安徽鑫龙电器股份有限公司 | Upper portion interlocking device for vacuum breaker |
| CN104934246A (en) * | 2015-06-30 | 2015-09-23 | 国家电网公司 | Emergency switch-off module of breaker |
| CN208352233U (en) * | 2018-06-25 | 2019-01-08 | 河南森源电气股份有限公司 | Breaker |
-
2018
- 2018-06-25 CN CN201810661332.2A patent/CN108922834B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201311869Y (en) * | 2008-11-24 | 2009-09-16 | 浙江纪元电气集团有限公司 | ZN63A-12 indoor vacuum circuit breaker |
| CN104183419A (en) * | 2014-09-11 | 2014-12-03 | 安徽鑫龙电器股份有限公司 | Upper portion interlocking device for vacuum breaker |
| CN104934246A (en) * | 2015-06-30 | 2015-09-23 | 国家电网公司 | Emergency switch-off module of breaker |
| CN208352233U (en) * | 2018-06-25 | 2019-01-08 | 河南森源电气股份有限公司 | Breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108922834A (en) | 2018-11-30 |
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