CN114566408B - Safety circuit breaker - Google Patents
Safety circuit breaker Download PDFInfo
- Publication number
- CN114566408B CN114566408B CN202210246141.6A CN202210246141A CN114566408B CN 114566408 B CN114566408 B CN 114566408B CN 202210246141 A CN202210246141 A CN 202210246141A CN 114566408 B CN114566408 B CN 114566408B
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- Prior art keywords
- fixed
- extrusion
- extrusion mechanism
- insulating shell
- adjusting
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Classifications
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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, wherein wiring ports are symmetrically arranged on the upper side surface and the lower side surface of the insulating shell, and the safety circuit breaker further comprises an extrusion mechanism and an adjusting mechanism, wherein the extrusion mechanism and the adjusting mechanism are arranged in the insulating shell and correspond to the positions of each wiring port; the extrusion mechanism is at least configured to be used for connecting the wire penetrating from the wiring port, and the wire is compressed by the cooperation of the adjustment mechanism when the wire loosens. The extrusion mechanism can be used for completing connection of the wires, and the movable pressing piece can be moved when the extrusion mechanism is loosened by matching with the adjusting mechanism, so that good contact of the wires is ensured, and virtual contact caused by loosening of bolts is avoided; 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 screwing, but is performed indirectly through the multi-section mechanism, so that the purpose of reducing the variation is achieved, and the control is more accurate.
Description
Technical Field
The invention relates to the technical field of circuit breaker switches, in particular to a safety circuit breaker.
Background
The circuit breaker switch is used as a basic switch, so to say that the circuit breaker switch is widely used in all places where electricity is used, and in the use process of the circuit breaker switch, the bolt connected with the copper bar is loosened along with the gradual increase of the use time, so that the wire is in virtual contact, and the problems of increased impedance and increased temperature of the contact position are caused, but the current switch cannot automatically treat the problems or has poor treatment effect.
Disclosure of Invention
The invention provides a safety circuit breaker for overcoming the defects of the technology.
The technical scheme adopted for overcoming the technical problems is as follows:
the safety circuit breaker at least comprises an insulating shell, wherein wiring ports are symmetrically arranged on the upper side surface and the lower side surface of the insulating shell, and the safety circuit breaker further comprises an extrusion mechanism and an adjusting mechanism, wherein the extrusion mechanism and the adjusting mechanism are arranged in the insulating shell and correspond to the positions of each wiring port; the extrusion mechanism is at least configured to be used for connecting the wire penetrating from the wiring port, and the wire is compressed by the cooperation of the adjustment mechanism when the wire loosens.
Further, the extrusion mechanism at least comprises a fixed extrusion mechanism arranged at the wiring 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 is carried out, the conducting 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 conducting wire is realized;
when the wire loosens, the movable extrusion mechanism is pushed to move towards the fixed extrusion mechanism under the thrust action of the adjusting mechanism, so that the wire is tightly pressed.
Further, the fixed extrusion mechanism at least comprises a fixed pressing sheet and an extrusion bolt, and the extrusion bolt penetrates through the fixed pressing sheet and is in threaded connection with the fixed pressing sheet.
Further, 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.
Further, the fixed extrusion mechanism further comprises an internal thread cover fixed on the insulating shell, and the adjusting disk is in threaded connection with the central axis of the internal thread cover.
Further, the movable extrusion mechanism at least comprises a movable pressing sheet, a sliding mechanism and an extrusion cam, wherein the movable pressing sheet is arranged in parallel with the fixed pressing sheet and is 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 plate, of the movable pressing plate, the limiting plate is fixed on the inner wall of the insulating shell, and the movable pressing plate is in butt joint with the limiting plate; the extrusion cam is fixed on the cam shaft, the cam shaft is rotationally connected to the inner wall of the insulating shell, and the extrusion cam passes through the opening of the limiting plate and is abutted to the movable pressing piece.
Further, 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-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 inclined slide block is connected to the side wall of the insulating shell in a sliding mode in the horizontal direction, an upper slope surface of the inclined slide block at the toe end is abutted to the lower end of the power storage block, a push rod is fixedly connected to the vertical side face of the top end of the slope, the push rod penetrates through the fixed pressing sheet and is connected with the fixed pressing sheet in a sliding mode, and the other end of the push rod is connected with the adjusting disc in a sliding mode.
Further, still include isolation mechanism, isolation mechanism includes the spacer rod and encircles the reset spring on the spacer rod at least, the equipartition has a plurality of spline groove around on the one end lateral wall that the power piece was kept away from to the camshaft, the spacer rod passes insulating housing and sets up in the position that corresponds the spline groove, the spacer rod extends to the outer one end of insulating housing and is fixed with the isolation button, reset spring's one end and isolation button fixed connection, the other end are fixed in on the outer wall of insulating housing.
Further, the isolation mechanism further comprises a protective cover fixed on the insulating shell, and the protective cover is sleeved on the isolation button.
Further, at least an overload protection device and an arc extinguishing device are also arranged in the insulating shell; and at least a switch is also arranged on the insulating shell.
The beneficial effects of the invention are as follows:
1. the extrusion mechanism can be used for completing connection of the wires, and the movable pressing piece can be moved when the extrusion mechanism is matched with the adjusting mechanism to loosen the wires, so that good contact of the wires is ensured, and the problems of increased impedance and increased temperature of contact positions caused by loose bolts are avoided.
2. The adjusting mechanism can adjust the reaction force of the extrusion cam, and the adjustment mechanism is not directly adjusted by direct suspension screwing and the like, but indirectly adjusted by 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 diagram of the overall structure of a safety circuit breaker of the present invention.
Fig. 2 is a schematic view of another angle of a safety circuit breaker 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 cross-sectional structure at "A-A" of fig. 4.
Fig. 6 is an enlarged structural schematic diagram at "B" of fig. 5.
Fig. 7 is a schematic cross-sectional structure at "C-C" of fig. 3.
Fig. 8 is an enlarged structural schematic diagram at "D" of fig. 4.
In the drawing, an insulating housing 10, a wiring port 11, an internally threaded cap 12, a switch 13, a pressing bolt 14, a regulating disk 15, a pressing cam 16, a cam shaft 17, a spline groove 171, a push rod 18, a fixed pressing piece 19, an inclined slider 20, a limiting plate 21, a movable pressing piece 22, a rail 23, a rail block 24, a power storage block 25, a protective cap 26, a spacer button 27, a spacer rod 28, a return spring 29, and a regulating spring 30.
Detailed Description
The invention will now be described in further detail with reference to the drawings and the specific examples, which are given by way of illustration only and are not intended to limit the scope of the invention, in order to facilitate a better understanding of the invention to those skilled in the art.
As shown in fig. 1-8, the safety circuit breaker according to this embodiment at least includes an insulating housing 10, a wiring port 11 and a switch 13 are symmetrically disposed on the upper and lower sides 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 all structures required for a conventional safety circuit breaker, and are not described herein again.
The invention has the greatest improvement 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 position of each wiring port 11 is provided with one extrusion mechanism and one adjusting mechanism; the pressing mechanism is at least configured to connect the wires penetrating from the wire connection port 11, and to press the wires in cooperation with the adjusting mechanism when the wires are loosened.
In this embodiment, the extruding mechanism at least includes a fixed extruding mechanism disposed at the junction 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 is carried out, the conducting 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 conducting wire is realized; when the wire loosens, the movable extrusion mechanism is pushed to move towards the fixed extrusion mechanism under the thrust action of the adjusting mechanism, so that the wire is tightly pressed.
Specifically, in this embodiment, the fixed extrusion mechanism includes at least an extrusion bolt 14, a fixed pressing piece 19 and an adjusting disk 15 parallel to the fixed pressing piece 19, where the fixed pressing piece 19 is close to the wiring port 11, the adjusting disk 15 is far away from the wiring port 11, the extrusion bolt 14 passes through the fixed pressing piece 19 and is in threaded connection with the fixed pressing piece, the extrusion bolt 14 is sleeved in the adjusting disk 15, specifically, the extrusion bolt 14 is sleeved on a central axis of the adjusting disk 15, and the adjusting disk 15 may be used for supporting an end of the extrusion bolt 14 far away from the fixed pressing piece 19 in an auxiliary manner.
Preferably, the fixed extrusion mechanism further comprises an internal thread cover 12 fixed on the insulating housing 10, and the adjusting disk 15 is screwed on the 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, and the extrusion bolt 14 is in a static state, and in addition, the internal thread cover 12 can cover the adjusting disk 15 to play a certain protection role.
Specifically, in this embodiment, the movable extrusion mechanism includes at least a movable pressing sheet 22, a sliding mechanism and an extrusion cam 16, where the movable pressing sheet 22 is disposed parallel to the fixed pressing sheet 19 and is located at two sides of the wiring port 11, the sliding mechanism includes at least a track 23 fixed on an inner wall of the insulating housing 10, the track 23 is specifically located at one end of the fixed pressing sheet 19 and one end of the movable pressing sheet 22 away from the wiring port 11, a chute (not labeled in the drawing) is disposed on the track 23, a track block 24 is slidably connected in the chute, 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 of the movable pressing plate 22 away from the fixed pressing plate 19, the limiting plate 21 is fixed on the inner wall of the insulating shell 10, and the movable pressing plate 22 is abutted (i.e. mutually abutted, contacted and connected) with 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 housing 10, and the extrusion cam 16 passes through the opening of the limiting plate 21 to be abutted with the movable pressing piece 22.
Specifically, in this embodiment, the adjusting mechanism includes at least an adjusting spring 30, a force storage block 25 and an inclined slider 20, where the force storage block 25 is disposed on one side of the pressing cam 16 and is connected to the inner wall of the insulating housing 10 in an up-down sliding manner; one end of the adjusting spring 30 is fixedly connected with the power 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 power storage block 25; the inclined slide block 20 is slidably connected to the side wall of the insulating housing 10 in the horizontal direction, an upper slope surface of the inclined slide block 20 at the toe end is abutted to the lower end of the force storage block 25, and a push rod 18 is fixedly connected to the vertical side surface of the top end of the slope, wherein the push rod 18 is preferably bent, the push rod 18 penetrates through the fixing pressing sheet 19 and is slidably connected with the fixing pressing sheet 19, and the other end of the push rod 18 is slidably connected with the adjusting disc 15. In this embodiment, the adjustment mechanism is further configured to adjust the magnitude of the reaction force of the pressing cam 16.
As a further preferable scheme of this embodiment, the safety circuit breaker further includes an isolation mechanism, the isolation mechanism includes at least an isolation 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 far away from the power storage block 25, the isolation rod 28 passes through the insulating housing 10 and is disposed at a position corresponding to the spline grooves 171, and an isolation button 27 is fixed at one end of the isolation rod 28 extending out of the insulating housing 10; the engagement or disengagement of the spacer rod 28 into or from the spline groove 171 may be accomplished by stopping the cam shaft 17 from applying pressure to the movable blade 22 when the spacer rod 28 is engaged into the spline groove 171, and otherwise continuing to apply pressure to the movable blade 22 by the cam shaft 17.
As a further preferred aspect, the isolation mechanism further includes a return spring 29 surrounding the isolation rod 28, where one end of the return spring 29 is fixedly connected to the isolation button 27, and the other end is fixed to the outer wall of the insulating housing 10. When the spacer rod 28 needs to be removed from the spline groove 171, the spacer rod 28 can be reset by the reset spring 29.
Still further preferably, the isolation mechanism further comprises a protective cover 26 fixed on the insulating housing 10, the protective cover 26 is sleeved on the isolation button 27, and the protective cover 26 is used for protecting the isolation button 27.
The principle of the safety circuit breaker in this embodiment is as follows:
when wire connection is needed, wires are penetrated between the fixed pressing piece 19 and the movable pressing piece 22 through the wiring port 11, then the outer side end of the extrusion bolt 14 is rotated to enable the extrusion bolt 14 to move inwards, and the inner side end of the extrusion bolt extrudes wires between the fixed pressing piece 19 and the movable pressing piece 22, so that connection of the wires is achieved.
When the force of the extrusion cam 16 needs to be finely adjusted, the adjustment disc 15 can be rotated to move inwards, so that the push rod 18 which is in sliding connection with the adjustment disc 15 is pushed inwards, and then the inclined slide block 20 drives the power storage block 25 to move upwards (the upward movement of the power storage block 25 is in the directions of fig. 5 and 6), the movement of the power storage block 25 is required to enable the extrusion cam 16 to store force through the adjustment spring 30, so that the extrusion cam 16 props against the movable pressing piece 22, the extrusion cam 16 has a movement trend of pushing the movable pressing piece 22 under the action of the adjustment mechanism, and in addition, the movable pressing piece 22 is pushed by the extrusion cam 16 to press the wire when the extrusion bolt 14 is loosened through the track block 24, so that the problem of virtual contact of the wire is avoided, and the wire is ensured to be well contacted. In addition, the adjusting mechanism is not adjusted in a direct mode such as direct suspension and twisting, but is indirectly adjusted through a multi-section mechanism, so that the purpose of reducing the variation is achieved, and the control is more accurate.
When maintenance or inspection equipment is required, the isolating rod 28 can be clamped into the spline groove 171 of the cam shaft 17 by pushing the isolating button 27, so that the force applied by the extrusion cam 16 to the movable pressing sheet 22 is isolated, and maintenance, measurement and other work can be conveniently performed.
The foregoing has described only the basic principles and preferred embodiments of the present invention, and many variations and modifications will be apparent to those skilled in the art in light of the above description, which variations and modifications are intended to be included within the scope of the present invention.
Claims (6)
1. The 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 further 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 each wiring port (11); the extrusion mechanism is at least configured to be used for connecting the wires penetrating from the wiring port (11), and is matched with the adjusting mechanism to compress the wires when the wires are loosened;
the extrusion mechanism at least comprises a fixed extrusion mechanism arranged at the wiring port (11) 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 is carried out, the conducting 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 conducting wire is realized;
when the wire loosens, the movable extrusion mechanism is pushed to move towards the fixed extrusion mechanism under the thrust action of the adjusting mechanism, so that the wire is tightly pressed;
the fixed extrusion mechanism at least comprises a fixed pressing sheet (19) and an extrusion bolt (14), wherein the extrusion bolt (14) penetrates through the fixed pressing sheet (19) and is in threaded connection with the fixed pressing sheet; the fixed extrusion mechanism further comprises an adjusting disc (15) parallel to the fixed pressing sheet (19), wherein the fixed pressing sheet (19) is close to the wiring port (11), the adjusting disc (15) is far away from the wiring port (11), and the extrusion bolt (14) is sleeved in the adjusting disc (15); the fixed extrusion mechanism further comprises an internal thread cover (12) fixed on the insulating shell (10), and the adjusting disc (15) is in threaded connection with the central axis of the internal thread cover (12).
2. The safety circuit breaker according to claim 1, wherein the movable pressing mechanism at least comprises a movable pressing sheet (22), a sliding mechanism and a pressing cam (16), the movable pressing sheet (22) is arranged in parallel with the fixed pressing sheet (19) and is respectively positioned at two sides of the wiring port (11), the sliding mechanism at least comprises 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 manner, 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, far away from the fixed pressing plate (19), of the movable pressing plate (22), the limiting plate (21) is fixed on the inner wall of the insulating shell (10), and the movable pressing plate (22) is abutted with the limiting plate (21); the extrusion cam (16) is fixed on a cam shaft (17), the cam shaft (17) is rotationally connected to the inner wall of the insulating shell (10), and the extrusion cam (16) passes through an opening of the limiting plate (21) to be abutted with the movable pressing piece (22).
3. The safety circuit breaker according to claim 2, characterized in that the adjusting mechanism comprises at least an adjusting spring (30), a power storage block (25) and an inclined slide block (20), wherein the power storage block (25) is arranged on one side of the extrusion cam (16) and is connected to the inner wall of the insulating housing (10) in an up-down 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, an upper slope surface of the inclined sliding block (20) located at the toe end is abutted to the lower end of the force storage block (25), a push rod (18) is fixedly connected to the vertical side face of the top end of the slope, one end of 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.
4. A safety circuit breaker according to claim 3, further comprising an isolation mechanism, wherein the isolation mechanism at least comprises an isolation rod (28) and a reset spring (29) encircling the isolation rod, a plurality of spline grooves (171) are uniformly distributed and encircling on the side wall of one end of the cam shaft (17) far away from the power storage block (25), the isolation rod (28) penetrates through the insulating shell (10) and is arranged at the position corresponding to the spline grooves (171), one end of the isolation rod (28) extending to the outside of the insulating shell (10) is fixedly provided with an isolation button (27), one end of the reset spring (29) is fixedly connected with the isolation button (27), and the other end of the reset spring is fixedly arranged on the outer wall of the insulating shell (10).
5. The safety circuit breaker according to claim 4, characterized in that the isolating mechanism further comprises a protective cover (26) fixed on the insulating housing (10), the protective cover (26) being sleeved on the isolating button (27).
6. Safety circuit breaker according to claim 1, characterized in that at least overload protection means and arc extinguishing means are also provided in the insulating housing (10); at least a switch (13) is also arranged on the insulating shell (10).
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 CN114566408A (en) | 2022-05-31 |
| CN114566408B true CN114566408B (en) | 2023-09-01 |
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ID=81718945
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 |
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| CN114566408A (en) | 2022-05-31 |
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