CN113889372A - Secondary terminal subassembly and circuit breaker - Google Patents
Secondary terminal subassembly and circuit breaker Download PDFInfo
- Publication number
- CN113889372A CN113889372A CN202010638557.3A CN202010638557A CN113889372A CN 113889372 A CN113889372 A CN 113889372A CN 202010638557 A CN202010638557 A CN 202010638557A CN 113889372 A CN113889372 A CN 113889372A
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- signal module
- receiving cavity
- secondary terminal
- circuit board
- terminal assembly
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- 238000009434 installation Methods 0.000 claims abstract description 15
- 230000013011 mating Effects 0.000 claims 4
- 230000007704 transition Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
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- Breakers (AREA)
Abstract
The invention discloses a secondary terminal assembly and a circuit breaker, and relates to the technical field of circuit breakers. The secondary terminal assembly comprises a lower terminal and a signal module, the lower terminal comprises an installation main body and a switching circuit board, the switching circuit board is arranged on the installation main body, the signal module is detachably connected with the installation main body, and the signal module is connected with the switching circuit board in an inserting mode. The secondary terminal assembly provided by the invention has the characteristics that the disassembly and assembly process of the circuit breaker can be simplified, and the internal space of the circuit breaker is saved.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a secondary terminal assembly and a circuit breaker.
Background
At present, the secondary terminal and the signal module of the circuit breaker on the market are two independent individuals.
When the circuit breaker is disassembled and assembled, the secondary terminal and the signal module need to be disassembled and assembled with a controller of the circuit breaker respectively, so that the disassembling and assembling process is complex and tedious, and the secondary terminal and the signal module are independent from each other and the waste rate of the internal space of the circuit breaker is high.
Disclosure of Invention
The invention aims to provide a secondary terminal assembly, which can simplify the disassembly and assembly process of a circuit breaker and save the internal space of the circuit breaker.
Another object of the present invention is to provide a circuit breaker capable of simplifying a disassembly and assembly process and saving an inner space.
The invention provides a technical scheme that:
a secondary terminal assembly comprises a lower terminal and a signal module, wherein the lower terminal comprises an installation main body and a switching circuit board, the switching circuit board is arranged on the installation main body, the signal module is detachably connected with the installation main body, and the signal module is connected with the switching circuit board in an inserting mode.
Furthermore, the installation main body is provided with an accommodating cavity, an inserting hole penetrates through the bottom wall of the accommodating cavity, the switching circuit board is arranged on one side, away from the accommodating cavity, of the bottom wall and corresponds to the inserting hole, one end of the signal module is inserted into the accommodating cavity, a connecting plug is arranged on the end wall of the signal module, and the connecting plug penetrates through the inserting hole to be connected with the switching circuit board in an inserting mode.
Furthermore, a positioning hole penetrates through the side wall of the accommodating cavity, a positioning lug is correspondingly arranged on the side wall of the signal module, and the positioning lug is embedded into the positioning hole.
Furthermore, a plurality of guide ribs are convexly arranged on the side wall of the accommodating cavity at intervals, the guide ribs extend in the accommodating cavity, and the signal module can be clamped between the two adjacent guide ribs in a sliding manner.
Furthermore, one end of the guide edge is flush with the cavity opening of the accommodating cavity, and the other end of the guide edge extends in a direction perpendicular to the bottom wall of the accommodating cavity.
Furthermore, a clamping groove penetrates through the side wall of one side, away from the guide ridge, of the accommodating cavity, a clamping block is arranged on the side wall of the signal module in a protruding mode, and the clamping block is in sliding fit with the clamping groove.
Further, the notch of the clamping groove is flush with the cavity opening of the accommodating cavity, and the clamping groove extends in the direction perpendicular to the bottom wall of the accommodating cavity.
Furthermore, the cross section of the clamping groove is T-shaped, and the clamping block is T-shaped.
The invention also provides a circuit breaker, which comprises a controller and a secondary terminal assembly, wherein the secondary terminal assembly comprises a lower terminal and a signal module, the lower terminal comprises an installation main body and a switching circuit board, the switching circuit board is arranged on the installation main body, the signal module is detachably connected with the installation main body, and the signal module is inserted into the switching circuit board. The mounting main body is connected with the controller, and the signal module is electrically connected with the controller through the switching circuit board.
Compared with the prior art, the lower end of the secondary terminal assembly provided by the invention comprises the mounting main body and the switching circuit board, and the switching circuit board is arranged on the mounting main body. The signal module is detachably connected with the mounting main body and is spliced with the switching circuit board. In practical application, when the secondary terminal assembly is configured in the circuit breaker, the signal module and the lower terminal are integrated into a whole, so that the installation space is saved, and the signal module is electrically connected with the controller through the switching circuit board, so that the disassembly and the assembly are convenient. Therefore, the secondary terminal assembly provided by the invention has the characteristics of simplifying the disassembly and assembly process of the circuit breaker and saving the internal space of the circuit breaker.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only certain embodiments of the invention and are therefore not to be considered limiting of its scope. For a person skilled in the art, it is possible to derive other relevant figures from these figures without inventive effort.
Fig. 1 is a schematic structural diagram of a secondary terminal assembly configured in a circuit breaker according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the lower terminal of FIG. 1;
FIG. 3 is a schematic diagram of the structure of the signal module in FIG. 1;
fig. 4 is an exploded view of fig. 1.
Icon: 100-a secondary terminal assembly; 110-a lower terminal; 111-a mounting body; 1111-an accommodating cavity; 1112-a cell; 1113-a plug hole; 1114-a socket; 1115-locating holes; 1117-guide edge; 1119-card slot; 113-a patch circuit board; 130-a signal module; 131-a plug-in connector; 133-positioning bumps; 135-fixture block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Examples
The embodiment provides a circuit breaker, which comprises a controller and a secondary terminal assembly 100 as shown in fig. 1, wherein the secondary terminal assembly 100 is electrically connected with the controller and is used for connecting secondary circuits in the circuit breaker. The secondary terminal assembly 100 has the characteristics of simplifying the disassembly and assembly process of the circuit breaker and saving the internal space of the circuit breaker.
In this embodiment, the secondary terminal assembly 100 includes a lower terminal 110 and a signal module 130, the signal module 130 is detachably connected to the lower terminal 110, and the signal module 130 is electrically connected to the controller through the lower terminal 110. In practical application, when the breaker is disassembled and assembled, the signal module 130 and the controller can be quickly disassembled and assembled only by disassembling the connecting structure between the lower terminal 110 and the controller, and the signal module 130 and the lower terminal 110 are integrated into an integral structure, so that the inner space of the breaker is greatly saved.
Referring to fig. 2, the lower terminal 110 includes a mounting body 111 and an adapting circuit board 113, wherein the mounting body 111 is provided with a receiving cavity 1111, and the receiving cavity 1111 is used for receiving the signal module 130. A plurality of inserting holes 1113 are formed in the bottom wall of the accommodating cavity 1111 in a penetrating manner, the adapting circuit board 113 is disposed on one side of the bottom wall far away from the accommodating cavity 1111 and corresponds to the plurality of inserting holes 1113, and the adapting circuit board 113 is used for being inserted into the signal module 130 to achieve electrical connection.
In this embodiment, the mounting body 111 is designed as an interlayer, the bottom wall of the receiving cavity 1111 is further provided with a separating cavity 1112 at a side away from the receiving cavity 1111, the adapting circuit board 113 is disposed on the sidewall of the separating cavity 1112 at a side away from the receiving cavity 1111 and corresponds to the inserting hole 1113, and when the signal module 130 is inserted into the receiving cavity 1111, a part of the signal module 130 passes through the inserting hole 1113 to complete the inserting connection with the adapting circuit board 113.
A socket 1114 is arranged on the outer wall of one side of the partition 1112, the socket 1114 is used for being plugged with a controller, when the controller is plugged with the socket 1114, the switching circuit board 113 is electrically connected with the controller, that is, the signal module 130 is electrically connected with the controller through the switching circuit board 113, so that the corresponding function of the signal module 130 is realized.
The mounting body 111 is further provided with a plurality of positioning holes 1115 on the sidewall of the receiving cavity 1111, in this embodiment, the positioning holes 1115 penetrate through the sidewall of the receiving cavity 1111, and the positioning holes 1115 are used for clamping and fixing the signal module 130 when the signal module 130 is inserted into the receiving cavity 1111, so as to position the signal module 130.
It can be understood that, by adjusting the relative position of the positioning hole 1115 on the side wall of the receiving cavity 1111, it can be realized that the signal module 130 is just inserted into the adaptor circuit board 113 when being clamped with the positioning hole 1115.
Referring to fig. 2, the sidewall of the receiving cavity 1111 is further protruded with a plurality of guiding ribs 1117, each guiding rib 1117 extends along the extending direction of the receiving cavity 1111, one end of the guiding rib 1117 is flush with the opening of the receiving cavity 1111, and the other end of the guiding rib 1117 extends along the extending direction of the receiving cavity 1111 to the bottom wall of the receiving cavity 1111.
In practical application, the signal module 130 is clamped between the two adjacent guide ribs 1117, slides along the guide ribs 1117 under the guiding action of the guide ribs 1117, and gradually slides into the accommodating cavity 1111 from the cavity opening of the accommodating cavity 1111 until the signal module 130 is matched with the positioning hole 1115, that is, the signal module 130 is inserted into the adapting circuit board 113.
In this embodiment, the receiving cavity 1111 is rectangular, the side wall of the receiving cavity 1111 is perpendicular to the bottom wall of the receiving cavity 1111, the guiding rib 1117 is a rectangular rib, and the extending direction of the guiding rib 1117 is perpendicular to the bottom wall of the receiving cavity 1111.
It should be noted that a positioning hole 1115 is disposed through a sidewall of the receiving cavity 1111 between every two adjacent guiding ribs 1117, that is, the positioning hole 1115 and the guiding rib 1117 are disposed on a sidewall of the receiving cavity 1111 at the same side, and a guiding rib 1117 is disposed between two adjacent positioning holes 1115 at an interval.
In addition, a plurality of slots 1119 are further penetratingly disposed on a side wall of the other side of the receiving cavity 1111 away from the guiding rib 1117 and the positioning hole 1115, a notch of the slot 1119 is opened at an end portion of the corresponding side wall, and the slot 1119 extends from the end portion of the corresponding side wall to the inside of the corresponding side wall, so as to clamp the signal module 130, prevent the signal module 130 from laterally displacing relative to the mounting body 111, and guide the signal module in cooperation with the guiding rib 1117.
The plurality of slots 1119 are arranged at intervals, the extending direction of each slot 1119 is the same as that of the guide rib 1117, and the slots are vertically directed to the bottom wall of the accommodating cavity 1111 by the opening position of the accommodating cavity 1111. In practical application, in the process of inserting the signal module 130 into the receiving cavity 1111, two adjacent side walls of the signal module 130 are firstly clamped with two adjacent guide ribs 1117 to perform a primary guiding function. The signal module 130 is clamped with the plurality of clamping grooves 1119 respectively in the process of sliding along the guiding ribs 1117 into the accommodating cavity 1111, so as to realize accurate guiding and further ensure accurate insertion with the adapting circuit board 113. In this embodiment, the cross section of the slot 1119 is T-shaped.
Referring to fig. 3, in the embodiment, a plug 131 is convexly disposed on an end wall of one end of the signal module 130, and the plug 131 is plugged into the adapting circuit board 113. In the process of inserting the signal module 130 into the receiving cavity 1111, the plug 131 passes through the plug hole 1113 and extends into the separating cavity 1112 to be plugged with the adapting circuit board 113, so as to achieve electrical connection with the controller.
In this embodiment, the insertion hole 1113 is a rectangular hole, and the insertion connector 131 protruding from the signal module 130 corresponding to the insertion hole 1113 is also rectangular.
In addition, as shown in fig. 1 and fig. 2, the signal module 130 is provided with a plurality of positioning bumps 133 protruding therefrom, the plurality of positioning bumps 133 correspond to the plurality of positioning holes 1115 formed on the inner sidewall of the receiving cavity 1111, and the plurality of positioning bumps 133 are respectively embedded into the plurality of positioning holes 1115. The sidewall of the receiving cavity 1111 has a certain elasticity, and when the signal module 130 is inserted into the receiving cavity 1111, the positioning protrusion 133 protruding from the sidewall of the signal module 130 abuts against the sidewall of the receiving cavity 1111 and slides close to the positioning hole 1115, and when the positioning protrusion 133 slides to the position of the positioning hole 1115, the positioning protrusion 133 extends into the positioning hole 1115 to complete the matching with the positioning hole 1115. At this time, the plug 131 is just plugged into the adapting circuit board 113.
It should be noted that, in other embodiments, the positions of the positioning holes 1115 and the positioning bumps 133 may be interchanged, that is, a plurality of positioning bumps 133 are protruded on the sidewall of the receiving cavity 1111, and a plurality of positioning holes 1115 are correspondingly recessed on the sidewall of the signal module 130, so that the positioning bumps 133 and the positioning holes 1115 are matched to position the signal module 130 when the signal module 130 is slidably inserted into the receiving cavity 1111. The arrangement mode of the positioning holes 1115 and the positioning bumps 133 can be adjusted according to actual application conditions, and the shapes of the positioning holes 1115 and the positioning bumps 133 can also be adjusted according to actual application conditions.
Referring to fig. 3, a plurality of locking blocks 135 are convexly disposed on a side wall of the signal module 130 away from the positioning hole 1115, the locking blocks 135 are disposed at intervals, and the locking blocks 135 are respectively and correspondingly locked with a plurality of locking slots 1119 disposed on a side wall of the receiving cavity 1111.
In practical applications, as shown in fig. 3 and 4, when the signal module 130 is inserted into the receiving cavity 1111, the signal module 130 is first clamped between two adjacent guiding ribs 1117, such that the positioning protrusions 133 correspond to the positioning holes 1115, and the clamping blocks 135 correspond to the clamping grooves 1119. Then, the signal module 130 is slidably inserted into the receiving cavity 1111 along the guiding rib 1117, and when the latch 135 moves to the position of the notch of the slot 1119, the position of the signal module 130 is finely adjusted, so that the plurality of latches 135 are respectively latched into the corresponding slots 1119. Then, the plug 131 is inserted into the receiving cavity 1111 until the positioning protrusion 133 is locked into the positioning hole 1115, and the plug is inserted into the receiving cavity 1112 to complete the insertion with the adaptor circuit board 113.
The fitting manner of the locking block 135 arranged on the signal module 130 and the locking groove 1119 arranged on the side wall of the accommodating cavity 1111 realizes accurate guiding of the signal module 130, and realizes limitation of the signal module 130 after being inserted into the accommodating cavity 1111 in a transverse motion direction perpendicular to the insertion direction, thereby preventing the electric connection relationship from being damaged due to relative swinging between the plug 131 and the adapting circuit board 113.
Corresponding to the structure of the engaging slot 1119, in the present embodiment, the engaging block 135 is also T-shaped. In other embodiments, the structures of the slot 1119 and the latch 135 can be adjusted according to requirements.
It is understood that the signal module 130 is configured with signal conversion, communication, synchronous detection and other functions, and can realize corresponding functions after being electrically connected with the controller. In practical applications, a user can quickly disassemble and replace the signal module 130 according to actual use requirements, which is convenient and fast.
In the circuit breaker provided by the embodiment, the secondary terminal assembly 100 is configured, the signal module 130 and the lower terminal 110 are detachably connected into a whole, so that the installation space in the circuit breaker is saved, and the signal module 130 is electrically connected with the controller through the adapter circuit board 113, so that the circuit breaker is convenient to disassemble and assemble. Therefore, the secondary terminal assembly 100 has the characteristics of simplifying the disassembly and assembly process of the circuit breaker and saving the internal space of the circuit breaker.
To sum up, the circuit breaker that this embodiment provided has easy dismounting, advantage that occupation space is littleer.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The secondary terminal assembly is characterized by comprising a lower terminal and a signal module, wherein the lower terminal comprises an installation main body and a switching circuit board, the switching circuit board is arranged on the installation main body, the signal module is detachably connected with the installation main body, and the signal module is spliced with the switching circuit board.
2. The secondary terminal assembly as claimed in claim 1, wherein the mounting body has a receiving cavity, a mating hole is formed through a bottom wall of the receiving cavity, the adapter circuit board is disposed on a side of the bottom wall away from the receiving cavity and corresponds to the mating hole, one end of the signal module is inserted into the receiving cavity, and a mating connector is disposed on an end wall of the signal module and is connected to the adapter circuit board through the mating hole.
3. The secondary terminal assembly of claim 2, wherein a positioning hole is formed through a sidewall of the receiving cavity, and a positioning protrusion is correspondingly formed on a sidewall of the signal module and is embedded into the positioning hole.
4. The secondary terminal assembly of claim 2, wherein a plurality of guide ribs are spaced and protruding from the side walls of said receiving cavity, said guide ribs extending within said receiving cavity, said signal module being slidably engaged between adjacent ones of said guide ribs.
5. The secondary terminal assembly of claim 4, wherein one end of the guide rib is flush with the opening of the receiving cavity, and the other end of the guide rib extends in a direction perpendicular to the bottom wall of the receiving cavity.
6. The secondary terminal assembly according to claim 4, wherein a slot is formed through a side wall of the receiving cavity on a side away from the guide rib, a locking block is protruded from the side wall of the signal module, and the locking block is slidably engaged with the slot.
7. The secondary terminal assembly of claim 6, wherein the slot opening of the card slot is flush with the cavity opening of the receiving cavity, the card slot extending in a direction perpendicular to the bottom wall of the receiving cavity.
8. The secondary terminal assembly of claim 6, wherein said slot is T-shaped in cross-section and said latch is T-shaped.
9. A circuit breaker comprising a controller and the secondary terminal assembly of any one of claims 1-8, said mounting body being connected to said controller, said signal module being electrically connected to said controller through said transition circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638557.3A CN113889372B (en) | 2020-07-02 | 2020-07-02 | Secondary terminal assembly and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010638557.3A CN113889372B (en) | 2020-07-02 | 2020-07-02 | Secondary terminal assembly and circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113889372A true CN113889372A (en) | 2022-01-04 |
| CN113889372B CN113889372B (en) | 2024-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010638557.3A Active CN113889372B (en) | 2020-07-02 | 2020-07-02 | Secondary terminal assembly and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113889372B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114783836A (en) * | 2022-04-22 | 2022-07-22 | 福建鑫博亿电力科技有限公司 | Primary and secondary circuit separation method of low-voltage circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202977327U (en) * | 2012-12-28 | 2013-06-05 | 常熟开关制造有限公司(原常熟开关厂） | Control and protection switch |
| CN203644690U (en) * | 2013-12-27 | 2014-06-11 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker position state signal acquisition and transmission device |
| CN107068497A (en) * | 2015-12-01 | 2017-08-18 | 西门子公司 | Device with the switch for controlling power |
| CN212365883U (en) * | 2020-07-02 | 2021-01-15 | 上海良信电器股份有限公司 | Secondary terminal subassembly and circuit breaker |
-
2020
- 2020-07-02 CN CN202010638557.3A patent/CN113889372B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202977327U (en) * | 2012-12-28 | 2013-06-05 | 常熟开关制造有限公司(原常熟开关厂） | Control and protection switch |
| CN203644690U (en) * | 2013-12-27 | 2014-06-11 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker position state signal acquisition and transmission device |
| CN107068497A (en) * | 2015-12-01 | 2017-08-18 | 西门子公司 | Device with the switch for controlling power |
| CN212365883U (en) * | 2020-07-02 | 2021-01-15 | 上海良信电器股份有限公司 | Secondary terminal subassembly and circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114783836A (en) * | 2022-04-22 | 2022-07-22 | 福建鑫博亿电力科技有限公司 | Primary and secondary circuit separation method of low-voltage circuit breaker |
| CN114783836B (en) * | 2022-04-22 | 2023-12-26 | 福建鑫博亿电力科技有限公司 | Secondary circuit separation method of low-voltage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113889372B (en) | 2024-09-20 |
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