CN114267568A - Outdoor power protection switch - Google Patents
Outdoor power protection switch Download PDFInfo
- Publication number
- CN114267568A CN114267568A CN202210196026.2A CN202210196026A CN114267568A CN 114267568 A CN114267568 A CN 114267568A CN 202210196026 A CN202210196026 A CN 202210196026A CN 114267568 A CN114267568 A CN 114267568A
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- protection switch
- outdoor power
- power protection
- hole
- piece
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Abstract
The invention discloses an outdoor power protection switch, which comprises a base for mounting the protection switch, a movable assembly arranged in the middle of a supporting part, an insulating part mounted on a metal part, a guide part mounted in the middle of the base, a bimetallic strip for limiting and/or unlocking a contact strip and a heating element arranged at the lower end of the bimetallic strip. The base is provided with an extension arm connected with the wire outlet end and a supporting part. The lower end of the movable component is provided with a lug, the upper end of the movable component is provided with a metal piece, and an elastic piece arranged outside the movable component. The insulator contracts from the bottom surface to the upper surface. The guide part is provided with an arc-shaped opening, and the movable assembly is provided with a guide rod arranged in the arc-shaped opening. This outdoor power protection switch can realize when circuit overload or short circuit automatically with the circuit disconnection, and adopt the mode of pressing to open and shut, and is easy and simple to handle, and compact structure can effectually improve the condition that protection switch is difficult to the disconnection when overload or short circuit appear in the circuit.
Description
Technical Field
The invention relates to a switch technology, in particular to an outdoor power protection switch.
Background
At present, the existing protection switch includes an operating mechanism, a magnetic flux converting mechanism, an electromagnet driving mechanism, a main contact mechanism, etc., and functions as a protection circuit, when an electrical fault caused by a short circuit or an overload is detected on the circuit, the magnetic flux converter pushes the operating mechanism to act, the operating mechanism drives a moving contact and a static contact of the main contact mechanism to open, the circuit is automatically disconnected, and a fault large current in the circuit is broken. And the structure involved in the installation operation is more, the installation difficulty is higher, and the structure is complicated.
The structure adopted by CN108389741A is that the movable contact piece is pushed by the handle, so that the transmission relation between the parts is realized, and when the movable contact piece is used for a long time, the arch part on the movable contact piece is easy to collapse, so that the limit function is lost;
the CN109659203A protection switch needs a switch mechanism, a limiting piece, a control mechanism and an operating handle to act in a matching way, the structure is relatively complex, the adopted transmission structure needs to be pushed by large torque, and the switch-on is inconvenient.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides an outdoor power protection switch.
The technical scheme of the invention is realized as follows:
an outdoor power protection switch comprising:
the base is used for mounting the protection switch, and an extension arm connected with the wire outlet end and a supporting part are arranged on the base;
the movable component is arranged in the middle of the supporting part, the lower end of the movable component is provided with a lapping sheet, the upper end of the movable component is provided with a metal piece, and the elastic piece is arranged outside the movable component;
an insulator mounted on the metal member, the insulator shrinking from a bottom surface to an upper surface;
the guide piece is arranged in the middle of the base, an arc-shaped opening is formed in the guide piece, a guide rod arranged in the arc-shaped opening is arranged on the movable assembly, and the guide rod is perpendicular to the butt strap;
a bimetallic strip for defining and/or unlocking the tabs; and
and the heating element is arranged at the lower end of the bimetallic strip.
In the invention, the supporting part is provided with vertical and parallel limiting columns, the limiting columns are positioned at two sides of the insulating part, and the limiting columns are contacted with the insulating part.
In the invention, the movable assembly consists of a screw rod and a connecting rod, a first through hole is formed in the middle of the metal piece, the upper end of the connecting rod is arranged in the first through hole, the lower end of the connecting rod is connected with the screw rod, a nut is arranged on the screw rod, and the nut is positioned at the lower end of the supporting part.
In the invention, the middle of the insulating part is provided with a second through hole, the central lines of the first through hole and the second through hole are superposed, the first through hole is internally provided with a first spring, the upper end of the first spring is arranged in the second through hole, and the lower end of the first spring is contacted with the connecting rod.
In the invention, the lower end of the insulating part is provided with a clamping arm which is arranged in parallel, the inner wall of the clamping arm is provided with a first triangular part which extends upwards, and two sides of the metal part are provided with second triangular parts which are matched with the first triangular part and extend downwards.
In the invention, the extension arm is provided with a first connecting terminal which is provided with a first elastic arm,
the metal piece is provided with a second wiring terminal, the second wiring terminal is provided with a second elastic arm, and the first elastic arm is parallel to the second elastic arm.
In the invention, the lower end of the bimetallic strip is provided with a first buckle part, and the buckle piece is provided with a second buckle part.
The outdoor power protection switch has the following beneficial effects: this outdoor power protection switch can realize when circuit overload or short circuit automatically with the circuit disconnection, and adopt the mode of pressing to open and shut, and is easy and simple to handle, and compact structure can effectually improve the condition that protection switch is difficult to the disconnection when overload or short circuit appear in the circuit.
Drawings
FIG. 1 is a schematic diagram of an outdoor power protection switch according to the present invention;
FIG. 2 is another schematic view of the structure of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is an exploded view of FIG. 1;
FIG. 6 is another schematic view of the structure of FIG. 5;
FIG. 7 is a schematic view of the guide of FIG. 6;
FIG. 8 is a schematic view of the bimetal, the heating element and the supporting plate shown in FIG. 6;
FIG. 9 is a cross-sectional view of the insulator, first spring and metal member configuration of FIG. 6;
fig. 10 is a schematic view of a contact state between the second connection terminal and the first connection terminal in the present invention;
FIG. 11 is a schematic view of the structure of FIG. 1 in use;
fig. 12 is another structural diagram of fig. 11.
In the figure: the clamping device comprises a base 1, a supporting portion 2, a movable assembly 3, a metal piece 4, an insulating piece 5, a guide piece 6, a butt strap 7, a bimetallic strip 8, a heating element 9, an extension arm 10, a hollow area 11, a first wiring terminal 12, a first elastic arm 13, a first wire 14, an extrusion portion 15, a screw 16, a second wiring terminal 17, a second elastic arm 18, a second wire 19, an elastic piece 20, a second butt strap portion 21, a screw rod 22, a connecting rod 23, a thread 24, a raised head 25, a first through hole 26, a third through hole 27, a nut 28, a first spring 29, a second through hole 30, a clamping arm 31, a first triangular portion 32, a second triangular portion 33, an inclined surface 34, a limiting column 35, an arc-shaped opening 36, a guide rod 37, a fixing arm 38, a bending portion 39, a first butt strap portion 40, an upper metal piece 41, a lower metal piece 42, a third wire 43, a supporting plate 44, a pressing arm 45 and a plane 46.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 12, the outdoor power protection switch of the present invention includes a base 1 for mounting the protection switch, a movable assembly 3 disposed in the middle of a support 2, an insulating member 5 mounted on a metal member 4, a guide 6 mounted in the middle of the base 1, a bimetal 8 for defining and/or unlocking a tab 7, and a heating element 9 disposed at the lower end of the bimetal 8.
Be equipped with extension arm 10 and the supporting part 2 of connecting the leading-out terminal on the base 1, have fretwork area 11 in the centre of base 1 simultaneously, lower terminal surface, up end and the rear end face in this fretwork area 11 are uncovered, and extension arm 10 and supporting part 2 are in the upper end in this fretwork area 11.
The extension arm 10 has a first connection terminal 12, and the first connection terminal 12 has a first elastic arm 13. The first terminal 12 is connected to the first wire 14. One end of the first connecting terminal 12 is a first elastic arm 13, the other end is a squeezing portion 15, the middle of the squeezing portion 15 is hollow, and the first wire 14 is arranged in the middle of the squeezing portion 15. Meanwhile, a screw 16 is provided on the extension arm 10, and the screw 16 is in contact with the pressing portion 15, so that when the screw 16 is tightened, the screw 16 pushes the pressing portion 15, and the first wire 14 is pressed by the pressing portion 15.
The metal piece 4 is provided with a second connecting terminal 17, the second connecting terminal 17 is provided with a second elastic arm 18, and the first elastic arm 13 is parallel to the second elastic arm 18. One end of the second connection terminal 17 is a second elastic arm 18, the other end is also a pressing portion 15, and the second wire 19 is placed in the pressing portion 15 and is pressed and fixed by a screw 16. The second wire 19 is arranged on the surface of the base 1. As shown in fig. 10, when the second elastic arm 18 moves downward, the first elastic arm 13 and the second elastic arm 18 which are parallel to each other are made to contact each other, and after the second elastic arm 18 moves downward, the first elastic arm 13 is stressed, so that the first elastic arm 13 is deformed, and at this time, the first elastic arm 13 and the second elastic arm 18 are already in contact, and the first wire 14 and the second wire 19 are already connected.
The lower end of the movable assembly 3 is provided with a tab 7, the upper end is provided with a metal piece 4, and an elastic piece 20 is arranged outside the movable assembly 3, wherein the elastic piece 20 is a second spring. The lapping sheet 7 is provided with a second lapping part 21, the second lapping part 21 is used for limiting the movable component 3, and after the lapping sheet 7 moves downwards, the lapping sheet 7 is in contact joint with the bimetallic strip 8 to connect the wire body.
The movable assembly 3 consists of a screw rod 22 and a connecting rod 23, and the connecting rod 23 is inserted into the middle of the screw rod 22 and is connected into a whole. The screw 22 has a partial thread 24 and the upper end of the connecting rod 23 has a nose 25, the diameter of the nose 25 being greater than the diameter of the connecting rod 23.
Meanwhile, the metal member 4 is made of non-insulating material and is electrically connected with the second wire 19. The metal piece 4 has a first through hole 26 in the middle, and the upper end of the connecting rod 23 is placed in the first through hole 26. The lower end of the first through hole 26 is provided with a third through hole 27, the first through hole 26 is communicated with the third through hole 27, and the central lines of the first through hole 26 and the third through hole are overlapped. The lower end of the connecting rod 23 is connected with the screw rod 22. The screw 22 has a nut 28, the nut 28 is located at the lower end of the support 2, the nut 28 is disposed on the thread 24, and the nut 28 can adjust the height of the screw 22 and the connecting rod 23, i.e., adjust the height of the screw 22 at the lower end of the support 2, thereby changing the elastic force of the elastic member 20.
The insulating part 5 and the metal part 4 are installed in a clamping mode. The insulating member 5 has a second through hole 30 in the middle thereof, the center lines of the first through hole 26 and the second through hole 30 coincide, the first through hole 26 has a first spring 29 therein, the upper end of the first spring 29 is placed in the second through hole 30, and the lower end thereof is in contact with the connecting rod 23. The lower end of the insulating member 5 is provided with a clamping arm 31 arranged in parallel, the inner wall of the clamping arm 31 is provided with a first triangular part 32 extending upwards, and two sides of the metal member 4 are provided with second triangular parts 33 extending downwards and matched with the first triangular part 32. The first triangular portion 32 and the inclined surface 34 of the second triangular portion 33 have a gap therebetween.
The first through hole 26 and the second through hole 30 are used for limiting the first spring 29, the connecting rod 23 is firstly inserted into the first through hole 26, passes through the second through hole 30 and is arranged at the lower end, the raised head 25 stays in the first through hole 26, then the first spring 29 is placed, and the insulating piece 5 is inserted into the metal piece 4, so that the first triangular part 32 is extruded by the second triangular part 33, and the clamping arm 31 is expanded. The inclined surfaces 34 of the first and second triangular portions 32 and 33 are guided in contact with each other, and the flat surfaces 46 of the first and second triangular portions 32 and 33 are brought into contact with each other, thereby abutting each other, and the insulator 5 is held by the metal fitting 4. At this time, the first spring 29 is compressed, the upper end and the lower end of the first spring 29 are both stretched and stressed up and down, so that the upper end of the first spring 29 is stressed towards the insulating part 5 and is pressed against the insulating part 5, the lower end of the first spring 29 is stressed against the metal part 4 to fix the insulating part 5 and the metal part 4, and the planes 46 of the first triangular part 32 and the second triangular part 33 are stressed oppositely to connect the insulating part 5 and the metal part 4.
During disassembly, the insulator 5 is simply translated so that the first triangular portion 32 and the second triangular portion 33 disengage and the upper end of the first spring 29 bends.
When the insulator 5 is pressed, the connecting rod 23 abuts against the first spring 29, so that the first spring 29 is compressed and stressed, and abuts against the insulator 5 at the moment, so that the insulator 5 and the metal piece 4 are not easy to separate.
Insulating part 5 contracts from the bottom face to the upper part face, has perpendicular and parallel arrangement's spacing post 35 on the supporting part 2, and spacing post 35 is located the both sides of insulating part 5, and spacing post 35 and insulating part 5 contact. When pressing insulator 5, insulator 5 can lead through spacing post 35, and the person of being convenient for presses insulator 5.
The guide 6 has an arc-shaped opening 36, the movable assembly 3 has a guide rod 37 disposed in the arc-shaped opening 36, the guide rod 37 is disposed on the lead screw 22, the guide rod 37 is disposed parallel to the bimetal 8 at the lower end of the screw thread 24, and the guide rod 37 is perpendicular to the bimetal 8 after the lead screw 22 is moved downward. The arc-shaped opening 36 can guide the guide rod 37. The arc-shaped opening 36 is arranged on the arc surface of the guide piece 6 at 90 degrees. The guide member 6 has fixing arms 38 at both ends thereof, and the fixing arms 38 are fixed to the base 1 by bent portions 39.
The contact patch 7 is arranged vertically to the guide rod 37, and the contact patch 7 is mounted on the lower end of the screw rod 22 through a screw 16.
The bimetal 8 has a first snap portion 40 at a lower end thereof, the bimetal 8 is composed of an upper metal plate 41 and a lower metal plate 42, and the first snap portion 40 is disposed on the lower metal plate 42.
Meanwhile, the base 1 is also provided with a third wire body 43, the third wire body 43 extends to the middle of the base 1, the middle of the base 1 is provided with a supporting plate 44, the supporting plate 44 is provided with a heating element 9, and the heating element 9 is positioned at the lower end of the bimetallic strip 8. Both ends of the heating element 9 have pressing arms 45, and the second wire 19 and the third wire 43 are placed at the lower ends of the pressing arms 45, so that the second wire 19 and the third wire 43 are fixed at both ends of the heating element 9 by the pressing arms 45.
When the circuit is overloaded or short-circuited, the heating element 9 generates heat, the bimetal strip 8 is affected by the temperature of the heating element 9, the bimetal strip 8 bends upwards, the deformation of the bimetal strip 8 enables the first buckle part 40 to be separated from the second buckle part 21, and the elastic part 20 pushes the metal part 4 to move upwards.
When the line is normal, the first latch portion 40 of the bimetal 8 contacts the second latch portion 21 of the tab 7, and the deformation force of the bimetal 8 is F1, that is, the bimetal 8 is in a horizontal state. And the elastic piece 20 is compressed and deformed after being pressed downwards by the metal piece 4, the deformation force is F2, F1 is more than F2, and the elastic force of the elastic piece 20 can not separate the first buckle part 40 and the second buckle part 21.
When the line needs to be communicated, the insulator 5 is pressed, so that the insulator 5 is pressed to move down along the guide post. The elastic member 20 is pushed downward and compressed by the metal member 4, and the second connecting terminal 17 moves downward to contact with the first connecting terminal 12. After the screw rod 22 is pushed downward, the guide rod 37 can move along the shape of the arc-shaped opening 36, and the metal piece 4 can not rotate along with the insulation piece 5 because the insulation piece 5 is limited by the limiting column 35 and cannot rotate. The upper end of the connecting rod 23 is located in the first through hole 26, is limited by the first spring 29, has small friction force and can rotate along with the guide rod 37. The lead screw 22 drives the connecting rod 23 to rotate, then the contact strip 7 also rotates along with the lead screw 22, the lead screw 22 moves downwards while rotating, so that the contact strip 7 reaches the lower end of the bimetallic strip 8, the second buckling part 21 is in contact with the first buckling part 40, and the resilience of the elastic piece 20 is limited. And the circuit is short-circuited or overloaded, so that the heating element 9 heats, the bimetallic strip 8 deforms upwards, the second buckle part 21 is separated from the first buckle part 40, the elastic part 20 pushes the metal part 4, the second connecting terminal 17 is separated from the first connecting terminal 12, and the circuit is disconnected.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An outdoor power protection switch, comprising:
the base is used for mounting the protection switch, and an extension arm connected with the wire outlet end and a supporting part are arranged on the base;
the movable component is arranged in the middle of the supporting part, the lower end of the movable component is provided with a lapping sheet, the upper end of the movable component is provided with a metal piece, and the elastic piece is arranged outside the movable component;
an insulator mounted on the metal member, the insulator shrinking from a bottom surface to an upper surface;
the guide piece is arranged in the middle of the base, an arc-shaped opening is formed in the guide piece, a guide rod arranged in the arc-shaped opening is arranged on the movable assembly, and the guide rod is perpendicular to the butt strap;
a bimetallic strip for defining and/or unlocking the tabs; and
and the heating element is arranged at the lower end of the bimetallic strip.
2. An outdoor power protection switch according to claim 1, wherein the support portion has vertical and parallel limiting posts on it, the limiting posts are located on both sides of the insulating member, and the limiting posts contact with the insulating member.
3. An outdoor power protection switch according to claim 1, wherein the movable member is composed of a screw rod and a connecting rod, the metal member has a first through hole in the middle, the connecting rod has an upper end disposed in the first through hole and a lower end connected to the screw rod, the screw rod has a nut thereon, and the nut is disposed at the lower end of the support portion.
4. An outdoor power protection switch according to claim 3, characterized in that said insulator has a second through hole in the middle, the center lines of said first and second through holes coincide, said first through hole has a first spring therein, the upper end of said first spring is placed in the second through hole, and the lower end is in contact with the connecting rod.
5. An outdoor power protection switch according to claim 1, wherein the lower end of the insulating member has parallel clamping arms, the inner walls of the clamping arms have first triangular portions extending upward, and both sides of the metal member have second triangular portions extending downward to match the first triangular portions.
6. An outdoor power protection switch according to claim 1, wherein said extension arm has a first terminal thereon, said first terminal having a first resilient arm thereon,
the metal piece is provided with a second wiring terminal, the second wiring terminal is provided with a second elastic arm, and the first elastic arm is parallel to the second elastic arm.
7. An outdoor power protection switch according to claim 1, characterized in that the lower end of said bimetal has a first snap-on portion, and said snap-on has a second snap-on portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210196026.2A CN114267568B (en) | 2022-03-02 | 2022-03-02 | Outdoor power protection switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210196026.2A CN114267568B (en) | 2022-03-02 | 2022-03-02 | Outdoor power protection switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114267568A true CN114267568A (en) | 2022-04-01 |
| CN114267568B CN114267568B (en) | 2022-05-20 |
Family
ID=80833863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210196026.2A Active CN114267568B (en) | 2022-03-02 | 2022-03-02 | Outdoor power protection switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114267568B (en) |
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|---|---|---|---|---|
| CN1101165A (en) * | 1992-09-28 | 1995-04-05 | 三菱电机株式会社 | Circuit Breaker |
| US5847638A (en) * | 1996-06-11 | 1998-12-08 | Sorenson; Richard W. | Thermal circuit protector and switch |
| FR2772980A1 (en) * | 1997-12-19 | 1999-06-25 | Schneider Electric Sa | MAGNETO-THERMAL TRIPPING DEVICE AND CIRCUIT BREAKER EQUIPPED WITH THIS DEVICE |
| TW433536U (en) * | 1999-02-12 | 2001-05-01 | Huang Je Chuan | Push button switch with leakage and short circuit protection |
| US20010006145A1 (en) * | 1999-12-30 | 2001-07-05 | Tsung-Mou Yu | Overload-protection push-button switch with retractable actuating mechanism |
| US20020113683A1 (en) * | 2001-02-22 | 2002-08-22 | Tsung-Mou Yu | Overload protection device of a press type switch |
| US6445273B1 (en) * | 1999-10-29 | 2002-09-03 | Tsung-Mou Yu | Overload-protection push-button switch with automatic resetting mechanism |
| US20030016115A1 (en) * | 2001-07-17 | 2003-01-23 | Tsung-Mou Yu | Safety press-button switch |
| CN2643472Y (en) * | 2003-08-22 | 2004-09-22 | 黄英哲 | Overload protector for low-ampere non-fuse switch |
| KR20090004429A (en) * | 2007-06-28 | 2009-01-12 | 후지 덴키 기기세이교 가부시끼가이샤 | Circuit breaker |
| CN101625943A (en) * | 2008-06-09 | 2010-01-13 | 伊顿公司 | Electrical switching apparatus and push-to-trip assembley therefor |
| CN104851757A (en) * | 2014-02-18 | 2015-08-19 | 通用电气公司 | Tri-stable flexure mechanism |
| CN108389741A (en) * | 2018-04-26 | 2018-08-10 | 厦门宏发开关设备有限公司 | A kind of protection switch |
| CN109659203A (en) * | 2018-12-24 | 2019-04-19 | 厦门宏发开关设备有限公司 | A kind of miniature circuit breaker abnormal protection device and miniature circuit breaker |
| CH716204A2 (en) * | 2019-05-20 | 2020-11-30 | Legrand France | Interrupteur sectionneur et combiné disjoncteur et interrupteur sectionneur. |
-
2022
- 2022-03-02 CN CN202210196026.2A patent/CN114267568B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101165A (en) * | 1992-09-28 | 1995-04-05 | 三菱电机株式会社 | Circuit Breaker |
| US5847638A (en) * | 1996-06-11 | 1998-12-08 | Sorenson; Richard W. | Thermal circuit protector and switch |
| FR2772980A1 (en) * | 1997-12-19 | 1999-06-25 | Schneider Electric Sa | MAGNETO-THERMAL TRIPPING DEVICE AND CIRCUIT BREAKER EQUIPPED WITH THIS DEVICE |
| TW433536U (en) * | 1999-02-12 | 2001-05-01 | Huang Je Chuan | Push button switch with leakage and short circuit protection |
| US6445273B1 (en) * | 1999-10-29 | 2002-09-03 | Tsung-Mou Yu | Overload-protection push-button switch with automatic resetting mechanism |
| US20010006145A1 (en) * | 1999-12-30 | 2001-07-05 | Tsung-Mou Yu | Overload-protection push-button switch with retractable actuating mechanism |
| US20020113683A1 (en) * | 2001-02-22 | 2002-08-22 | Tsung-Mou Yu | Overload protection device of a press type switch |
| US20030016115A1 (en) * | 2001-07-17 | 2003-01-23 | Tsung-Mou Yu | Safety press-button switch |
| CN2643472Y (en) * | 2003-08-22 | 2004-09-22 | 黄英哲 | Overload protector for low-ampere non-fuse switch |
| KR20090004429A (en) * | 2007-06-28 | 2009-01-12 | 후지 덴키 기기세이교 가부시끼가이샤 | Circuit breaker |
| CN101625943A (en) * | 2008-06-09 | 2010-01-13 | 伊顿公司 | Electrical switching apparatus and push-to-trip assembley therefor |
| CN104851757A (en) * | 2014-02-18 | 2015-08-19 | 通用电气公司 | Tri-stable flexure mechanism |
| CN108389741A (en) * | 2018-04-26 | 2018-08-10 | 厦门宏发开关设备有限公司 | A kind of protection switch |
| CN109659203A (en) * | 2018-12-24 | 2019-04-19 | 厦门宏发开关设备有限公司 | A kind of miniature circuit breaker abnormal protection device and miniature circuit breaker |
| CH716204A2 (en) * | 2019-05-20 | 2020-11-30 | Legrand France | Interrupteur sectionneur et combiné disjoncteur et interrupteur sectionneur. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114267568B (en) | 2022-05-20 |
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