CN113658812A - Switch on-off device and transformer cabinet - Google Patents
Switch on-off device and transformer cabinet Download PDFInfo
- Publication number
- CN113658812A CN113658812A CN202110932075.3A CN202110932075A CN113658812A CN 113658812 A CN113658812 A CN 113658812A CN 202110932075 A CN202110932075 A CN 202110932075A CN 113658812 A CN113658812 A CN 113658812A
- Authority
- CN
- China
- Prior art keywords
- contact
- switch
- transmission
- assembly
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/42—Knife-and-clip contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/44—Contacts characterised by the manner in which co-operating contacts engage by sliding with resilient mounting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a switch on-off device and a power transformation cabinet, wherein the switch on-off device comprises a device main body, wherein a plurality of contact pieces which are connected with each other are arranged on the device main body; the connecting assembly comprises a plurality of connecting structures and a pivoting piece arranged at one end of each connecting structure far away from the contact piece, and the connecting structures are movably connected with the device main body through the pivoting pieces; the operation assembly is arranged on the device main body and is opposite to the connecting assembly; the operating assembly comprises an operating structure connected with a plurality of connecting structures, each connecting structure comprises an abutting portion, and axial movement of the operating structure can drive the connecting structures to rotate around the pivoting piece so that the abutting portions are in elastic contact with or disconnected from the contact pieces. According to the switch on-off device and the transformer cabinet, the connecting assembly and the operating assembly are arranged on the device main body, and the operating assembly can drive the connecting assembly to be in elastic contact with or be disconnected from the contact element on the device main body, so that the whole device can be connected and switched on and off.
Description
Technical Field
The invention relates to the technical field of electric connection, in particular to a switch on-off device and a power transformation cabinet.
Background
Along with the high-speed development of electronic equipment and the improvement of living standard of people, and along with the increase of electronic equipment, the quantity of transformer cabinet is also more and more.
The power transformation cabinet, as a tool for converting, concentrating and distributing voltage and current of electric energy in an electric power system, needs to realize electric energy transmission between a power output end and electronic equipment through a switch on-off device, and can switch on or switch off a circuit by a manual or automatic switch during normal operation, so that the reliability of the switch on-off device also becomes an important factor.
Among the prior art, the switch on-off device adopts ceramic material to constitute usually, and manufacturing cost is higher to also very easily appear damaged along with the increase of break-make number of times, in case appear damaged, then whole switch on-off device can't reuse, has the problem that the reliability is low, the practicality is low.
Disclosure of Invention
Based on the above, the invention aims to provide a switch on-off device and a power transformation cabinet, which are used for solving the problems of high production cost, high possibility of damage, low reliability and low practicability caused by the fact that the switch on-off device in the prior art is usually made of ceramic materials.
The invention provides a switch on-off device, comprising:
the device comprises a device main body, a plurality of contact pieces and a plurality of connecting pieces, wherein the contact pieces are connected with each other;
the connecting assembly comprises a plurality of connecting structures and a pivoting piece arranged at one end of each connecting structure, which is far away from the contact piece, and the connecting structures are movably connected with the device main body through the pivoting pieces;
the operation assembly is arranged on the device main body and is opposite to the connecting assembly;
the operating assembly comprises an operating structure which is connected with a plurality of connecting structures, each connecting structure comprises an abutting portion, and axial movement of the operating structure can drive the connecting structures to rotate around the pivoting piece so that the abutting portions are in elastic contact with or disconnected from the contact pieces.
The invention also provides a power transformation cabinet which comprises the switch on-off device.
According to the switch on-off device and the transformer cabinet, the connecting assembly and the operating assembly are arranged on the device main body, and the operating assembly can drive the connecting assembly to be in elastic contact with or disconnected from the contact element on the device main body, so that the whole device can be connected and switched on and off; specifically, the arrangement of the plurality of mutually connected contact elements can effectively avoid the problem of integral failure caused by the damage of the single contact element; the abutting part on the connecting structure is in elastic contact with the contact piece, so that the abutting part can be always kept in contact with the contact piece under the elastic action, and the contact stability of the abutting part and the contact piece is further improved; on the other hand, the arrangement of the plurality of connecting structures can also effectively avoid the occurrence of the phenomenon of integral failure caused by the damage of the single connecting structure; the arrangement of the operation structure can enable the connection structure to realize linkage through the operation structure; the overall practicability is further improved.
Furthermore, the connecting structure is two oppositely arranged conductive clamping plates, one end of each clamping plate facing the contact piece is inwards recessed to form the abutting portion, and one end of each clamping plate far away from the abutting portion is connected with the pivoting piece.
Furthermore, two all be equipped with the elasticity clamping piece on the relative one side of keeping away from of splint, the both ends orientation of elasticity clamping piece splint crooked, just support and lean on splint.
Furthermore, a through hole is formed in one end, far away from the abutting portion, of the clamping plate, the pivoting member comprises a pivoting shaft and a fixing member for connecting the pivoting shaft and the device body, and the pivoting shaft is respectively connected with the two clamping plates through the two through holes, so that the clamping plate can rotate around the fixing member.
Furthermore, the operation structure is a conductive push rod, the push rod is connected with the two clamping plates, and the axial movement of the push rod can drive the clamping plates to rotate around the fixing piece, so that the abutting portion is in elastic contact with or disconnected from the contact piece.
Furthermore, the operating assembly further comprises a handle and a transmission structure connected with the handle and the push rod, and the handle drives the transmission structure to move axially, so that the push rod moves axially.
Furthermore, the transmission structure comprises a frame, a transmission shaft and a transmission rod connected with the transmission shaft and the push rod, the frame is fixed on the device body, and the transmission shaft is respectively connected with two sides of the frame.
Furthermore, the handle is provided with a driving gear, the transmission shaft is provided with a transmission gear meshed with the driving gear, and when the handle rotates, the driving gear drives the transmission gear to rotate, so that the transmission shaft drives the transmission rod to axially move.
Drawings
Fig. 1 is a schematic view of the overall structure of a switch on-off device in an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of the device body according to the embodiment of the present invention;
FIG. 3 is a schematic diagram of an overall structure of a connecting assembly according to an embodiment of the invention;
FIG. 4 is a schematic view of the overall structure of the connection structure according to the embodiment of the present invention;
FIG. 5 is a schematic view of the overall structure of the pivot member in the embodiment of the present invention;
FIG. 6 is a schematic diagram of the overall structure of an operating assembly in an embodiment of the present invention;
FIG. 7 is a schematic view of the overall structure of a transmission structure according to an embodiment of the present invention;
FIG. 8 is a schematic view of the connection assembly and the operation assembly according to the embodiment of the present invention;
description of the main element symbols:
| |
100 | |
211 |
| |
200 | |
212 |
| |
300 | |
221 |
| |
110 | |
222 |
| |
120 | |
321 |
| |
130 | |
331 |
| |
210 | |
332 |
| |
220 | Connecting |
333 |
| |
310 | Abutting |
2111 |
| Handle (CN) | 320 | Through |
2112 |
| |
330 | |
3321 |
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a switch on/off device according to an embodiment of the present invention is shown, including a device main body 100, a connecting assembly 200 disposed on the device main body 100, and an operating assembly 300, wherein the operating assembly 300 and the connecting assembly 200 are disposed opposite to each other, and the operating assembly 300 can axially move relative to the device main body 100 to drive the connecting assembly 200 to rotate, so that the connecting assembly 200 is connected to or disconnected from a contact point on the device main body 100, thereby implementing on/off of a circuit.
Note that the contact points between the connection component 200 and the device main body 100 are all made of conductive materials. And the configuration shown in fig. 1 does not constitute a limitation of the on-off switching device, in other embodiments the device may comprise more or less components than shown, or some components may be combined, or a different arrangement of components.
Referring to fig. 2, a device body 100 according to an embodiment of the present invention includes a supporting frame 110, a plurality of contacts 120 disposed on the supporting frame 110 and connected to each other, and a limiting member 130 covering the contacts 120.
As can be understood, the arrangement of the plurality of contacts 120 connected to each other can effectively avoid the problem of overall failure caused by the damage of the individual contacts 120; when the operating assembly 300 moves axially relative to the device body 100, the connecting assembly 200 is driven to rotate, so that the connecting assembly 200 contacts with the contact element 120, and the circuit is switched on and off; further, the limiting member 130 can limit the connecting assembly 200 when the connecting assembly 200 contacts the contact 120, so as to avoid the phenomenon that the connecting assembly 200 is separated from the contact 120 to cause poor contact.
Referring to fig. 3 to 5, there is shown a connecting assembly 200 according to an embodiment of the present invention, including a plurality of connecting structures 210 and a pivot 220 disposed at an end of the connecting structures 210 away from the contact 120, the operating assembly 300 includes an operating structure 310 connected to the plurality of connecting structures 210, the connecting structures 210 are movably connected to the apparatus main body 100 through the pivot 220; the connecting structure 210 includes an abutting portion 2111, and the axial movement of the operating structure 310 can rotate the connecting structure 210 about the pivot member 220 to elastically contact or disconnect the abutting portion 2111 with or from the contact member 120.
As can be understood, the arrangement of the plurality of connecting structures 210 can also effectively avoid the occurrence of the phenomenon of overall failure caused by the breakage of the single connecting structure 210; the pivot 220 is configured to allow the connection structure 210 to be detachable from the device body 100, so as to facilitate later maintenance and replacement of the connection structure 210; the abutting portion 2111 is in elastic contact with the contact 120, so that the abutting portion 2111 can be kept in contact with the contact 120 all the time by the elastic action, and the contact stability of the abutting portion 2111 and the contact 120 is further improved.
Specifically, the connecting structure 210 is two oppositely disposed conductive clamping plates 211, one end of the clamping plate 211 facing the contact 120 is recessed inward to form the above-mentioned abutting portion 2111, and one end of the clamping plate 211 far away from the abutting portion 2111 is connected to the pivot member 220; elastic clamping pieces 212 are arranged on the opposite sides of the two clamping plates 211, and the two ends of each elastic clamping piece 212 bend towards the clamping plates 211 and abut against the clamping plates 211.
As can be understood, the clamping plate 211 is disposed to be recessed inward toward one end of the contact 120, so that the abutting portion 2111 has a certain clamping performance, when the abutting portion 2111 is in elastic contact with the contact 120, the contact 120 will open the two abutting portions 2111 and be clamped between the two abutting portions 2111, so that when the circuit is connected, the abutting portion 2111 is always in contact with the contact 120; due to the arrangement of the elastic clamping plate 211, the clamping performance of the clamping plate 211 can be effectively improved, and the clamping plate 211 is prevented from being in good contact with the contact element 120 due to abrasion caused by multiple on-off.
It should be noted that, in other embodiments, the connecting structure 210 may also be another conductive element with a clamping function, and the technical solution adopted by the connecting structure is substantially the same as that of the clamping plate 211 in this application.
Further, a through hole 2112 is provided at an end of the clamping plate 211 away from the abutting portion 2111, the pivot member 220 includes a pivot shaft 221 and a fixing member 222 connecting the pivot shaft 221 and the apparatus main body 100, and the pivot shaft 221 connects the two clamping plates 211 through the two through holes 2112, respectively, so that the clamping plates 211 can rotate around the fixing member 222.
It will be appreciated that the pivot axis 221 is provided such that the connection structure 210 can rotate about the pivot axis 221 to enable the abutment 2111 to make and break resilient contact with the contact 120 as described above.
Referring to fig. 6 to 8, an operating assembly 300 according to an embodiment of the present invention is shown, the operating structure 310 is a conductive push rod, the push rod is connected to the two clamping plates 211, and axial movement of the push rod can drive the clamping plates 211 to rotate around the fixing member 222, so that the abutting portion 2111 elastically contacts or disconnects with the contact 120.
It can be understood that the conductive push rod connects the plurality of clamping plates 211, so that the plurality of clamping plates 211 can realize synchronous motion, and the phenomenon of integral realization caused by poor contact of the single clamping plate 211 is avoided.
It should be noted that, in other embodiments, the operation structure 310 may also be other connection components having the same function.
Further, the operating assembly 300 further includes a handle 320 and a transmission structure 330 connecting the handle 320 and the push rod, wherein the handle 320 drives the transmission structure 330 to perform an axial movement, so as to further perform an axial movement on the push rod. The transmission structure 330 includes a frame, a transmission shaft 332 and a transmission rod 331 connecting the transmission shaft 332 and the push rod, the frame is fixed on the device body 100, the transmission shaft 332 is respectively connected to two sides of the frame, and the transmission shaft 332 is provided with a connecting portion 333 connected to the transmission rod 331.
It can be appreciated that the handle 320 can drive the transmission structure 330 to move axially, so as to enable the push rod to move axially, and the handle 320 can also enable the operator to pull the connecting structure 210 more easily.
It should be noted that, in other embodiments, the operating assembly 300 may also be an electric driving mechanism, and the driving motor drives the push rod to perform an axial movement, so that the abutting portion 2111 is elastically contacted with or disconnected from the contact 120.
Specifically, a driving gear 321 is arranged on the handle 320, a transmission gear 3321 engaged with the driving gear 321 is arranged on the transmission shaft 332, and when the handle 320 rotates, the driving gear 321 drives the transmission gear 3321 to rotate, so that the transmission shaft 332 drives the transmission rod 331 to axially move.
It can be understood that the design of the driving gear 321 and the transmission gear 3321 can save more labor for the operator, and further improve the practicability and reliability of the device.
The application also provides a transformer cabinet, including foretell switch on-off device.
In summary, in the switch on-off device and the transformer cabinet in the above embodiments of the present invention, the connecting assembly and the operating assembly are disposed on the device main body, and the operating assembly can drive the connecting assembly to elastically contact or disconnect the contact element on the device main body, so that the whole device can achieve connection and on-off of a circuit; specifically, the arrangement of the plurality of mutually connected contact elements can effectively avoid the problem of integral failure caused by the damage of the single contact element; the abutting part on the connecting structure is in elastic contact with the contact piece, so that the abutting part can be always kept in contact with the contact piece under the elastic action, and the contact stability of the abutting part and the contact piece is further improved; on the other hand, the arrangement of the plurality of connecting structures can also effectively avoid the occurrence of the phenomenon of integral failure caused by the damage of the single connecting structure; the arrangement of the operation structure can enable the connection structure to realize linkage through the operation structure; the overall practicability is further improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A switch on/off device, comprising:
the device comprises a device main body, a plurality of contact pieces and a plurality of connecting pieces, wherein the contact pieces are connected with each other;
the connecting assembly comprises a plurality of connecting structures and a pivoting piece arranged at one end of each connecting structure, which is far away from the contact piece, and the connecting structures are movably connected with the device main body through the pivoting pieces;
the operation assembly is arranged on the device main body and is opposite to the connecting assembly;
the operating assembly comprises an operating structure which is connected with a plurality of connecting structures, each connecting structure comprises an abutting portion, and axial movement of the operating structure can drive the connecting structures to rotate around the pivoting piece so that the abutting portions are in elastic contact with or disconnected from the contact pieces.
2. The switch on/off device according to claim 1, wherein said connecting structure is two oppositely disposed conductive clamping plates, one end of said clamping plate facing said contact member is recessed inwardly to form said abutting portion, and one end of said clamping plate remote from said abutting portion is connected to said pivot member.
3. The switch on-off device according to claim 2, wherein a resilient clip is provided on both sides of said clamping plates facing away from each other, both ends of said resilient clip being bent toward and abutting against said clamping plates.
4. The on-off switch device according to claim 3, wherein a through hole is provided at an end of said clamp plate remote from said abutting portion, said pivot member includes a pivot shaft and a fixing member connecting said pivot shaft and said device body, said pivot shaft connects said two clamp plates through said two through holes, respectively, so that said clamp plates can rotate around said fixing member.
5. The switch on-off device according to claim 4, wherein said operating structure is an electrically conductive push rod, said push rod connects two said clamping plates, and axial movement of said push rod can drive said clamping plates to rotate around said fixing member, so that said abutting portion is elastically contacted with or disconnected from said contact member.
6. The on-off switch device according to claim 1, wherein said operating assembly further comprises a handle and a transmission structure connecting said handle and said push rod, said handle driving said transmission structure to move axially, thereby causing said push rod to move axially.
7. The on-off switch device according to claim 6, wherein said transmission structure comprises a frame, a transmission shaft and a transmission rod connecting said transmission shaft and said push rod, said frame is fixed on said device body, said transmission shaft is connected to both sides of said frame respectively.
8. The on-off switch device according to claim 7, wherein said handle has a driving gear, said transmission shaft has a transmission gear engaged with said driving gear, and when said handle is rotated, said driving gear drives said transmission gear to rotate, so that said transmission shaft drives said transmission rod to move axially.
9. A transformation cabinet, comprising the switch opening/closing device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110932075.3A CN113658812A (en) | 2021-08-13 | 2021-08-13 | Switch on-off device and transformer cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110932075.3A CN113658812A (en) | 2021-08-13 | 2021-08-13 | Switch on-off device and transformer cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113658812A true CN113658812A (en) | 2021-11-16 |
Family
ID=78479834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110932075.3A Pending CN113658812A (en) | 2021-08-13 | 2021-08-13 | Switch on-off device and transformer cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113658812A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202678122U (en) * | 2011-04-28 | 2013-01-16 | 洛克威尔自动控制技术股份有限公司 | Scalable medium voltage latching earthing switch |
| CN107482520A (en) * | 2017-08-24 | 2017-12-15 | 北京华电瑞通电力工程技术有限公司 | A kind of close/open machine of drawer cabinet breaker |
| CN211788768U (en) * | 2020-05-22 | 2020-10-27 | 厦门市同耀电器实业有限公司 | Knife switch structure of low-voltage power distribution cabinet circuit breaker |
| CN213366454U (en) * | 2020-11-16 | 2021-06-04 | Abb瑞士股份有限公司 | Grounding switch for switch cabinet and switch cabinet |
| CN112993837A (en) * | 2019-12-13 | 2021-06-18 | 杨洋 | Switch cabinet |
-
2021
- 2021-08-13 CN CN202110932075.3A patent/CN113658812A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202678122U (en) * | 2011-04-28 | 2013-01-16 | 洛克威尔自动控制技术股份有限公司 | Scalable medium voltage latching earthing switch |
| CN107482520A (en) * | 2017-08-24 | 2017-12-15 | 北京华电瑞通电力工程技术有限公司 | A kind of close/open machine of drawer cabinet breaker |
| CN112993837A (en) * | 2019-12-13 | 2021-06-18 | 杨洋 | Switch cabinet |
| CN211788768U (en) * | 2020-05-22 | 2020-10-27 | 厦门市同耀电器实业有限公司 | Knife switch structure of low-voltage power distribution cabinet circuit breaker |
| CN213366454U (en) * | 2020-11-16 | 2021-06-04 | Abb瑞士股份有限公司 | Grounding switch for switch cabinet and switch cabinet |
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