CN114566408A - Safety circuit breaker - Google Patents
Safety circuit breaker Download PDFInfo
- Publication number
- CN114566408A CN114566408A CN202210246141.6A CN202210246141A CN114566408A CN 114566408 A CN114566408 A CN 114566408A CN 202210246141 A CN202210246141 A CN 202210246141A CN 114566408 A CN114566408 A CN 114566408A
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- fixed
- pressing
- extrusion
- adjusting
- movable
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- 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
- H01H71/08—Terminals; Connections
-
- 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
- H01H71/02—Housings; Casings; Bases; Mountings
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Abstract
The invention discloses a safety circuit breaker, which at least comprises an insulating shell, an extrusion mechanism and an adjusting mechanism, wherein the upper side surface and the lower side surface of the insulating shell are symmetrically provided with wiring ports; the pressing mechanism is at least configured to be used for connecting a lead penetrating from the wiring port and is matched with the adjusting mechanism to press the lead when the lead is loosened. The extrusion mechanism can complete the connection of the wire, and the movable pressing sheet can move when the wire is loosened by matching with the adjusting mechanism, so that the good contact of the wire is ensured, and the virtual contact caused by the loosening of the bolt is avoided; adjustment mechanism can adjust the size of the reaction dynamics of extrusion cam, and because it is not adjusted through direct modes such as directly hanging the wrong, but carries out indirect adjustment through multistage mechanism to the purpose of reducing the change volume has been produced, makes control more accurate.
Description
Technical Field
The invention relates to the technical field of circuit breaker switches, in particular to a safety circuit breaker switch.
Background
Breaker switch is as a basic switch, and there is extensive use in all places of power consumption, and discovery in breaker switch's use, along with the gradual increase of live time, the bolt of connecting the copper bar often can appear becoming flexible, leads to the wire virtual contact to cause contact position impedance to increase, the problem that the temperature rose, but present switch often can not be handled or the treatment effect is not good to this kind of problem by oneself.
Disclosure of Invention
The invention provides a safety circuit breaker for overcoming the defects of the prior art.
The technical scheme adopted by the invention for overcoming the technical problems is as follows:
a safety circuit breaker at least comprises an insulating shell, an extrusion mechanism and an adjusting mechanism, wherein wiring ports are symmetrically formed in the upper side surface and the lower side surface of the insulating shell; the pressing mechanism is at least configured to be used for connecting a lead penetrating from the wiring port and is matched with the adjusting mechanism to press the lead when the lead is loosened.
Furthermore, the extrusion mechanism at least comprises a fixed extrusion mechanism arranged at the wire port and a movable extrusion mechanism arranged at the opposite side of the fixed extrusion mechanism, and the adjusting mechanism is arranged on the extrusion mechanism;
when conducting wire connection, a wire penetrates between the fixed extrusion mechanism and the movable extrusion mechanism, and the fixed extrusion mechanism moves towards the movable extrusion mechanism by applying thrust to the fixed extrusion mechanism, so that the connection of the wire is realized;
when the conducting wire is loosened, the movable extrusion mechanism is pushed to move towards the fixed extrusion mechanism under the thrust action of the adjusting mechanism, so that the conducting wire is compressed.
Further, the fixed pressing mechanism at least comprises a fixed pressing sheet and a pressing bolt, and the pressing bolt penetrates through the fixed pressing sheet and is in threaded connection with the fixed pressing sheet.
Furthermore, the fixed extrusion mechanism further comprises an adjusting disc parallel to the fixed pressing sheet, wherein the fixed pressing sheet is close to the wiring port, the adjusting disc is far away from the wiring port, and the extrusion bolt is sleeved in the adjusting disc in a penetrating manner.
Furthermore, the fixed extrusion mechanism further comprises an internal thread cover fixed on the insulating shell, and the adjusting disc is connected to the central axis of the internal thread cover in a threaded mode.
Furthermore, the movable extrusion mechanism at least comprises a movable pressing sheet, a sliding mechanism and an extrusion cam, the movable pressing sheet and the fixed pressing sheet are arranged in parallel and are respectively positioned at two sides of the wiring port, the sliding mechanism at least comprises a track fixed on the inner wall of the insulating shell and a track block arranged on the track in a sliding manner, and the lower end of the movable pressing sheet is fixedly connected with the track block; a limiting plate with a hole in the middle is arranged on one side, away from the fixed pressing sheet, of the movable pressing sheet, the limiting plate is fixed on the inner wall of the insulating shell, and the movable pressing sheet is abutted to the limiting plate; the extrusion cam is fixed on the cam shaft, the cam shaft is rotatably connected to the inner wall of the insulating shell, and the extrusion cam penetrates through the opening of the limiting plate to be abutted against the movable pressing sheet.
Furthermore, the adjusting mechanism at least comprises an adjusting spring, a force storage block and an inclined sliding block, wherein the force storage block is arranged on one side of the extrusion cam and is connected to the inner wall of the insulating shell in an up-and-down sliding manner; one end of the adjusting spring is fixedly connected with the force storage block, and the other end of the adjusting spring is fixedly connected with one side of the extrusion cam close to the force storage block; the oblique slider horizontal direction sliding connection is on insulating casing's lateral wall, and the oblique slider is located the upper slope face of slope foot end and holds the lower extreme butt of power piece, is located the perpendicular side fixedly connected with push rod on slope top, the push rod pass fixed preforming and with fixed preforming sliding connection, the other end and the adjustment disk sliding connection of push rod.
Furthermore, the cam shaft power storage device further comprises an isolation mechanism, the isolation mechanism at least comprises an isolation rod and a reset spring which is wound on the isolation rod, a plurality of spline grooves are uniformly distributed on the side wall of one end, away from the power storage block, of the cam shaft, the isolation rod penetrates through the insulating shell and is arranged at the position corresponding to the spline grooves, an isolation button is fixed at one end, extending to the outer side of the insulating shell, of the isolation rod, and one end of the reset spring is fixedly connected with the isolation button and the other end of the reset spring is fixed on the outer wall of the insulating shell.
Furthermore, the isolation mechanism further comprises a protective cover fixed on the insulating shell, and the protective cover is sleeved on the isolation button.
Furthermore, at least an overload protection device and an arc extinguishing device are arranged in the insulating shell; the insulating shell is at least provided with a switch.
The invention has the beneficial effects that:
1. the extrusion mechanism can complete the connection of the wire, and the movable pressing sheet can move when the wire loosens by matching with the adjusting mechanism, so that the good contact of the wire is ensured, and the problems of increased impedance and increased temperature of the contact position due to the virtual contact caused by the loosening of the bolt are avoided.
2. The adjusting mechanism can adjust the reaction force of the extrusion cam, and the adjustment is not performed in a direct mode such as direct suspension and screwing, but is performed indirectly through a multi-section mechanism, so that the purpose of reducing the variation is achieved, and the control is more accurate.
Drawings
Fig. 1 is a schematic view of the overall structure of a safety cut-off switch of the present invention.
Fig. 2 is a schematic view of another angle of the safety cut-off switch of the present invention.
Fig. 3 is a front view of fig. 1.
Fig. 4 is a top view of fig. 1.
Fig. 5 is a schematic sectional view taken along line a-a in fig. 4.
Fig. 6 is an enlarged schematic view of the structure at "B" of fig. 5.
Fig. 7 is a schematic sectional view at "C-C" of fig. 3.
Fig. 8 is an enlarged schematic view of the structure at "D" of fig. 4.
In the figure, an insulating shell 10, a wiring port 11, an internal thread cover 12, a switch 13, an extrusion bolt 14, an adjusting disc 15, an extrusion cam 16, a cam shaft 17, a spline groove 171, a push rod 18, a fixed pressing sheet 19, an inclined sliding block 20, a limiting plate 21, a movable pressing sheet 22, a track 23, a track block 24, a power storage block 25, a protective cover 26, an isolation button 27, an isolation rod 28, a return spring 29 and an adjusting spring 30.
Detailed Description
In order to facilitate a better understanding of the invention for those skilled in the art, the invention will be described in further detail with reference to the accompanying drawings and specific examples, which are given by way of illustration only and do not limit the scope of the invention.
As shown in fig. 1 to 8, the safety cut-off switch according to this embodiment at least includes an insulating housing 10, wherein a wiring port 11 and a switch 13 are symmetrically disposed on upper and lower side surfaces of the insulating housing 10, and at least an overload protection device and an arc extinguishing device are further disposed in the insulating housing 10, which are structures required for a conventional safety cut-off switch, and are not described herein again.
The greatest improvement of the invention lies in that: the device also comprises an extrusion mechanism and an adjusting mechanism. The extrusion mechanism and the adjusting mechanism are arranged in the insulating shell 10 and correspond to the position of each wiring port 11, namely, the extrusion mechanism and the adjusting mechanism are arranged at the position of each wiring port 11; the pressing mechanism is at least configured to connect the wire penetrating from the wire connection port 11 and cooperate with the adjusting mechanism to press the wire when the wire is loosened.
In this embodiment, the extruding mechanism at least includes a fixed extruding mechanism disposed at the wiring port 11 and a movable extruding mechanism disposed at the opposite side of the fixed extruding mechanism, and the adjusting mechanism is disposed on the extruding mechanism. When conducting wire connection, a wire penetrates between the fixed extrusion mechanism and the movable extrusion mechanism, and the fixed extrusion mechanism moves towards the movable extrusion mechanism by applying thrust to the fixed extrusion mechanism, so that the connection of the wire is realized; when the conducting wire is loosened, the movable extrusion mechanism is pushed to move towards the fixed extrusion mechanism under the thrust action of the adjusting mechanism, so that the conducting wire is compressed.
Specifically, in this embodiment, the fixed pressing mechanism at least includes a pressing bolt 14, a fixed pressing plate 19, and an adjusting plate 15 parallel to the fixed pressing plate 19, where the fixed pressing plate 19 is close to the wire connection port 11, the adjusting plate 15 is far from the wire connection port 11, the pressing bolt 14 passes through the fixed pressing plate 19 and is in threaded connection with the fixed pressing plate, the pressing bolt 14 is inserted into the adjusting plate 15, specifically, the pressing bolt 14 is inserted into a central axis of the adjusting plate 15, and the adjusting plate 15 can be used to assist in supporting one end of the pressing bolt 14, which is far from the fixed pressing plate 19.
Preferably, the fixed pressing mechanism further comprises an internal thread cover 12 fixed on the insulating housing 10, and the adjusting disk 15 is screwed on a central axis of the internal thread cover 12. When the adjusting disk 15 is screwed, the adjusting disk 15 moves inwards under the action of the internal thread cover 12, the extrusion bolt 14 is in a static state, and in addition, the internal thread cover 12 can cover the adjusting disk 15 for a certain protection effect.
Specifically, in this embodiment, the movable pressing mechanism at least includes a movable pressing piece 22, a sliding mechanism and a pressing cam 16, the movable pressing piece 22 and the fixed pressing piece 19 are arranged in parallel and are respectively located at two sides of the wire connection port 11, the sliding mechanism at least includes a rail 23 fixed on the inner wall of the insulating housing 10, the rail 23 is specifically located at one end of the fixed pressing piece 19 and one end of the movable pressing piece 22 away from the wire connection port 11, a sliding groove (not shown in the figure) is arranged on the rail 23, a rail block 24 is slidably connected in the sliding groove, and the lower end of the movable pressing piece 22 is fixedly connected with the rail block 24; a limiting plate 21 with a hole in the middle is arranged on one side of the movable pressing sheet 22 away from the fixed pressing sheet 19, the limiting plate 21 is fixed on the inner wall of the insulating shell 10, and the movable pressing sheet 22 is abutted with the limiting plate 21 (i.e. abutted and contacted with each other); the extrusion cam 16 is fixed on a cam shaft 17, the cam shaft 17 is rotatably connected on the inner wall of the insulating shell 10, and the extrusion cam 16 passes through the opening of the limiting plate 21 and abuts against the movable pressing sheet 22.
Specifically, in the present embodiment, the adjusting mechanism at least includes an adjusting spring 30, a power accumulating block 25 and a slant slider 20, wherein the power accumulating block 25 is disposed on one side of the extrusion cam 16 and is connected to the inner wall of the insulating housing 10 in a vertically sliding manner; one end of the adjusting spring 30 is fixedly connected with the force storage block 25, and the other end is fixedly connected with one side of the extrusion cam 16 close to the force storage block 25; the inclined sliding block 20 is horizontally and slidably connected to the side wall of the insulating housing 10, an upper slope surface of the inclined sliding block 20 at the end of the slope leg abuts against the lower end of the force accumulation block 25, and a push rod 18 is fixedly connected to a vertical side surface at the top end of the slope, wherein the push rod 18 is preferably bent, the push rod 18 penetrates through the fixed pressing sheet 19 and is slidably connected with the fixed pressing sheet 19, and the other end of the push rod 18 is slidably connected with the adjusting plate 15. In the present embodiment, the adjustment mechanism is also configured to adjust the magnitude of the reaction force of the pressing cam 16.
As a further preferable solution of this embodiment, the safety cut-off switch further includes an isolating mechanism, the isolating mechanism at least includes an isolating rod 28, a plurality of spline grooves 171 are uniformly distributed and surrounded on a side wall of one end of the cam shaft 17 away from the power accumulating block 25, the isolating rod 28 penetrates through the insulating casing 10 and is arranged at a position corresponding to the spline grooves 171, and an isolating button 27 is fixed at one end of the isolating rod 28 extending out of the insulating casing 10; the blocking or releasing of the cam shaft 17 can be realized by the isolating rod 28 being snapped into or out of the spline groove 171, that is, when the isolating rod 28 is snapped into the spline groove 171, the cam shaft 17 stops applying pressure to the movable pressing piece 22, and conversely, the cam shaft 17 continues applying pressure to the movable pressing piece 22.
Preferably, the isolating mechanism further comprises a return spring 29 surrounding the isolating rod 28, wherein one end of the return spring 29 is fixedly connected with the isolating button 27, and the other end is fixed on the outer wall of the insulating housing 10. When the isolating rod 28 needs to be taken out of the spline groove 171, the resetting of the isolating rod 28 can be realized through the resetting spring 29.
In this embodiment, it is further preferable that the isolation mechanism further includes a protection cover 26 fixed on the insulating housing 10, the protection cover 26 is sleeved on the isolation button 27, and the protection cover 26 is used for protecting the isolation button 27.
The principle of the safety cut-off switch described in this embodiment is:
when the wires are required to be connected, the wires are inserted between the fixed pressing piece 19 and the movable pressing piece 22 through the wire connecting port 11, then the extrusion bolt 14 moves inwards by rotating the outer end of the extrusion bolt 14, and the inner end of the extrusion bolt extrudes and falls on the wires between the fixed pressing piece 19 and the movable pressing piece 22, so that the wires are connected.
When the force for extruding the cam 16 needs to be finely adjusted, the adjusting disc 15 can be rotated to move inwards, so that the push rod 18 connected with the adjusting disc 15 in a sliding way is pushed to move inwards, and thus the power accumulation block 25 is moved upward by the slanting slider 20 (where the upward movement of the power accumulation block 25 is directed to the direction in fig. 5 and 6), the desired movement of the power accumulation block 25 causes the pressing cam 16 to accumulate power by the adjusting spring 30, so that the pressing cam 16 is pressed against the movable pressing sheet 22, the pressing cam 16 has the movement tendency of pushing the movable pressing sheet 22 under the action of the adjusting mechanism, in addition, since the movable pressing plate 22 slides in the sliding groove of the rail 23 through the rail block 24, when the extrusion bolt 14 is loosened, the pressing cam 16 will push the movable pressing plate 22 to press the wires tightly, so as to avoid the problem of wire virtual contact, thereby ensuring good wire contact. In addition, the adjusting mechanism does not adjust in a direct mode such as direct suspension screwing and the like, but indirectly adjusts through a multi-section mechanism, so that the purpose of reducing the variation is achieved, and the control is more accurate.
When the equipment needs to be overhauled or detected, the isolating button 27 can be pushed to enable the isolating rod 28 to be clamped into the spline groove 171 of the cam shaft 17, so that the force applied to the movable pressing sheet 22 by the extrusion cam 16 is isolated, and the overhauling, measurement and other work can be facilitated.
The foregoing merely illustrates the principles and preferred embodiments of the invention and many variations and modifications may be made by those skilled in the art in light of the foregoing description, which are within the scope of the invention.
Claims (10)
1. A safety circuit breaker at least comprises an insulating shell (10), wherein wiring ports (11) are symmetrically arranged on the upper side surface and the lower side surface of the insulating shell (10), and the safety circuit breaker is characterized by also comprising an extrusion mechanism and an adjusting mechanism, wherein the extrusion mechanism and the adjusting mechanism are arranged in the insulating shell (10) and correspond to the positions of the wiring ports (11); the pressing mechanism is at least configured to be used for connecting a lead penetrating from the wiring port (11) and is matched with the adjusting mechanism to press the lead when the lead is loosened.
2. The safety disconnector according to claim 1, characterized in that the pressing mechanism comprises at least a fixed pressing mechanism disposed at the connection port (11) and a movable pressing mechanism disposed at the opposite side of the fixed pressing mechanism, the adjusting mechanism being disposed on the pressing mechanism;
when conducting wire connection, a wire penetrates between the fixed extrusion mechanism and the movable extrusion mechanism, and the fixed extrusion mechanism moves towards the movable extrusion mechanism by applying thrust to the fixed extrusion mechanism, so that the connection of the wire is realized;
when the conducting wire is loosened, the movable extrusion mechanism is pushed to move towards the fixed extrusion mechanism under the thrust action of the adjusting mechanism, so that the conducting wire is compressed.
3. The safety disconnector according to claim 2, characterized in that the fixed pressing mechanism comprises at least a fixed pressing plate (19) and a pressing bolt (14), the pressing bolt (14) passing through the fixed pressing plate (19) and being in threaded connection with the fixed pressing plate.
4. The safety disconnector according to claim 3, characterized in that the fixed pressing mechanism further comprises an adjusting plate (15) parallel to the fixed pressing plate (19), wherein the fixed pressing plate (19) is close to the connection port (11), the adjusting plate (15) is far away from the connection port (11), and the pressing bolt (14) is sleeved in the adjusting plate (15).
5. The safety disconnector according to claim 4, characterized in that the fixed pressing mechanism further comprises an internally threaded cover (12) fixed to the insulating housing (10), the adjusting disk (15) being screwed onto the central axis of the internally threaded cover (12).
6. The safety cut-off switch of claim 4, characterized in that the movable pressing mechanism comprises at least a movable pressing sheet (22), a sliding mechanism and a pressing cam (16), the movable pressing sheet (22) and the fixed pressing sheet (19) are arranged in parallel and are respectively positioned at two sides of the wiring port (11), the sliding mechanism comprises at least a track (23) fixed on the inner wall of the insulating shell (10) and a track block (24) arranged on the track in a sliding way, and the lower end of the movable pressing sheet (22) is fixedly connected with the track block (24); a limiting plate (21) with a hole in the middle is arranged on one side, away from the fixed pressing sheet (19), of the movable pressing sheet (22), the limiting plate (21) is fixed on the inner wall of the insulating shell (10), and the movable pressing sheet (22) is abutted to the limiting plate (21); the extrusion cam (16) is fixed on the cam shaft (17), the cam shaft (17) is rotatably connected on the inner wall of the insulating shell (10), and the extrusion cam (16) penetrates through the opening of the limiting plate (21) to be abutted against the movable pressing sheet (22).
7. The safety disconnector according to claim 6, characterized in that the adjusting mechanism comprises at least an adjusting spring (30), a force accumulation block (25) and a slanting slider (20), the force accumulation block (25) is arranged at one side of the extrusion cam (16) and is connected to the inner wall of the insulating housing (10) in a vertically sliding manner; one end of the adjusting spring (30) is fixedly connected with the force storage block (25), and the other end of the adjusting spring is fixedly connected with one side of the extrusion cam (16) close to the force storage block; the inclined sliding block (20) is connected to the side wall of the insulating shell (10) in a sliding mode in the horizontal direction, the inclined sliding block (20) is located on the upper slope surface of the slope foot end, abutted to the lower end of the force storage block (25), and is located on the vertical side face of the slope top end and fixedly connected with a push rod (18), the push rod (18) penetrates through the fixed pressing sheet (19) and is connected with the fixed pressing sheet in a sliding mode, and the other end of the push rod (18) is connected with the adjusting disc (15) in a sliding mode.
8. The safety cut-off switch of claim 7, characterized by further comprising an isolating mechanism, wherein the isolating mechanism at least comprises an isolating rod (28) and a return spring (29) surrounding the isolating rod, a plurality of spline grooves (171) are uniformly formed on the side wall of one end of the cam shaft (17) far away from the power storage block (25), the isolating rod (28) penetrates through the insulating housing (10) and is arranged at the position corresponding to the spline grooves (171), an isolating button (27) is fixed at one end of the isolating rod (28) extending out of the insulating housing (10), one end of the return spring (29) is fixedly connected with the isolating button (27), and the other end of the return spring is fixed on the outer wall of the insulating housing (10).
9. The safety shutdown switch of claim 8, characterized in that the isolation mechanism further comprises a protective cover (26) fixed to the insulating housing (10), the protective cover (26) being fitted over the isolation button (27).
10. The safety disconnector according to claim 1, characterized in that at least an overload protection device and an arc extinguishing device are arranged in the insulating housing (10); the insulating shell (10) is at least provided with a switch (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210246141.6A CN114566408B (en) | 2022-03-14 | 2022-03-14 | Safety circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210246141.6A CN114566408B (en) | 2022-03-14 | 2022-03-14 | Safety circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114566408A true CN114566408A (en) | 2022-05-31 |
| CN114566408B CN114566408B (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210246141.6A Active CN114566408B (en) | 2022-03-14 | 2022-03-14 | Safety circuit breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN114566408B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1956623A2 (en) * | 2007-02-08 | 2008-08-13 | Siemens Aktiengesellschaft | Current protection swich with clip |
| CN108022804A (en) * | 2017-12-01 | 2018-05-11 | 江苏创能电器有限公司 | A kind of electronic type molded case circuit breaker |
| CN210468165U (en) * | 2019-07-16 | 2020-05-05 | 广州信榕科技有限公司 | Wiring terminal |
| CN210897157U (en) * | 2019-11-21 | 2020-06-30 | 温州隆威电气有限公司 | Plastic case circuit breaker easy to wire |
| CN212010868U (en) * | 2020-06-19 | 2020-11-24 | 厦门大恒科技有限公司 | Wiring terminal |
| CN212991003U (en) * | 2020-10-10 | 2021-04-16 | 无锡元弘电气工程有限公司 | Linkage device of circuit breaker |
| CN112863951A (en) * | 2021-01-05 | 2021-05-28 | 三峡大学 | Electrical engineering distribution circuit breaker |
-
2022
- 2022-03-14 CN CN202210246141.6A patent/CN114566408B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1956623A2 (en) * | 2007-02-08 | 2008-08-13 | Siemens Aktiengesellschaft | Current protection swich with clip |
| CN108022804A (en) * | 2017-12-01 | 2018-05-11 | 江苏创能电器有限公司 | A kind of electronic type molded case circuit breaker |
| CN210468165U (en) * | 2019-07-16 | 2020-05-05 | 广州信榕科技有限公司 | Wiring terminal |
| CN210897157U (en) * | 2019-11-21 | 2020-06-30 | 温州隆威电气有限公司 | Plastic case circuit breaker easy to wire |
| CN212010868U (en) * | 2020-06-19 | 2020-11-24 | 厦门大恒科技有限公司 | Wiring terminal |
| CN212991003U (en) * | 2020-10-10 | 2021-04-16 | 无锡元弘电气工程有限公司 | Linkage device of circuit breaker |
| CN112863951A (en) * | 2021-01-05 | 2021-05-28 | 三峡大学 | Electrical engineering distribution circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN114566408B (en) | 2023-09-01 |
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