CN209843646U - Circuit breaker with over-voltage and under-voltage protection assembly - Google Patents
Circuit breaker with over-voltage and under-voltage protection assembly Download PDFInfo
- Publication number
- CN209843646U CN209843646U CN201920890512.8U CN201920890512U CN209843646U CN 209843646 U CN209843646 U CN 209843646U CN 201920890512 U CN201920890512 U CN 201920890512U CN 209843646 U CN209843646 U CN 209843646U
- Authority
- CN
- China
- Prior art keywords
- assembly
- circuit breaker
- overvoltage
- undervoltage
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Breakers (AREA)
Abstract
The utility model relates to a circuit breaker with cross undervoltage protection subassembly, it includes two at least poles of arranging in proper order in the first direction, each in two at least poles includes incoming line terminal assembly, subassembly and outgoing line terminal assembly open circuit, the circuit breaker includes at the casing with first direction vertically second direction upper extension, wherein two at least poles set up inside the casing, the integrated undervoltage protection subassembly of crossing that has two at least poles to share in the circuit breaker, wherein inside the casing, the incoming line terminal subassembly, the subassembly that opens circuit, cross undervoltage protection subassembly and the terminal assembly that is qualified for the next round of competitions is arranged in proper order in the second direction, and wherein cross the major loop that undervoltage protection subassembly electricity is connected to the circuit breaker and include electronic circuit board and cross undervoltage magnetic-out subassembly.
Description
Technical Field
The utility model relates to a circuit breaker with cross undervoltage protection subassembly.
Background
The circuit breaker is mainly used for overload and short-circuit protection of lines. However, if the line has overvoltage or undervoltage fault, necessary protection measures are needed to quickly cut off the power supply so as to ensure the safety of equipment and personnel. At present, most of the products are combined by a circuit breaker and an overvoltage and undervoltage protection module. Such a product needs to adopt more circuits to connect the overvoltage and undervoltage protection module to the circuit breaker, is unfavorable for the user to install to occupy great space, increased electrical equipment's cost. For example, the width of the currently-used circuit breaker with the overvoltage and undervoltage protection function is increased by 36mm or 18mm, so that a larger distribution box space is occupied, and the installation cost is higher. In addition, the currently adopted products do not have a digital indication module, and a user cannot know in time what fault occurs to the circuit.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circuit breaker with cross undervoltage protection subassembly, its width that does not increase the circuit breaker just has digital indication module, therefore the volume is less, the installation is simple and the cost is lower.
The utility model relates to a circuit breaker with an over-voltage and under-voltage protection component, which comprises at least two poles which are arranged in sequence in a first direction, wherein each of the at least two poles comprises an incoming line terminal component, a circuit breaking component and an outgoing line terminal component,
the circuit breaker comprises a housing elongated in a second direction perpendicular to the first direction, wherein at least two poles are arranged inside the housing,
the circuit breaker is internally integrated with at least two poles sharing overvoltage and undervoltage protection assemblies, wherein in the shell, the incoming line terminal assembly, the circuit breaking assembly, the overvoltage and undervoltage protection assemblies and the outgoing line terminal assembly are sequentially arranged in the second direction, and the overvoltage and undervoltage protection assemblies are electrically connected to a main loop of the circuit breaker and comprise an electronic circuit board and an overvoltage and undervoltage magnetic disengaging assembly.
In one embodiment, the overvoltage and undervoltage magnetic release assembly is disposed on a common support bracket with the magnetic release assembly of the circuit interrupting assembly of one of the at least two poles for mechanical connection to the housing.
In one embodiment, the undervoltage coil of the undervoltage tripping magnet assembly and the tripping coil of the tripping assembly in the tripping assembly of the one pole are arranged around a common tappet.
In one embodiment, the electronic circuit board is disposed adjacent to the under-voltage magnetic release assembly and between the outlet terminal assembly of at least two poles and the under-voltage magnetic release assembly.
In one embodiment, the circuit breaker further comprises an overvoltage and undervoltage display assembly, wherein the overvoltage and undervoltage display assembly is arranged on the outer side of the shell, is electrically connected with the overvoltage and undervoltage protection assembly, and is used for displaying a voltage state or a voltage value in the main loop.
In one embodiment, the circuit breaker further comprises a breakpoint assembly arranged inside the shell, wherein when the circuit breaker is opened, the breakpoint assembly disconnects the overvoltage and undervoltage protection assembly from the electrical connection of the main loop; when the circuit breaker is switched on, the breakpoint assembly enables the overvoltage and undervoltage protection assembly to be electrically connected with the main loop.
In one embodiment, the breakpoint assembly includes an insulating driving member and a conductive elastic member movably disposed on the inner side of the housing, wherein the conductive elastic member includes a first branch portion and a second branch portion, the first branch portion is electrically connected to the overvoltage/undervoltage protection assembly, the conductive elastic member can enable the second branch portion to be electrically connected to the main circuit of the circuit breaker under the action of elastic force, so that the overvoltage/undervoltage protection assembly is electrically connected to the main circuit, and the insulating driving member can drive the conductive elastic member to move against the elastic force under the action of a movable contact support of the circuit breaker, so that the second branch portion is far away from the main circuit, thereby disconnecting the overvoltage/undervoltage protection assembly from the main circuit.
In one embodiment, the conductive elastic member is a metal torsion spring, wherein the metal torsion spring is rotatable about a pivot shaft disposed on the housing, and the insulated driving member is disposed on the metal torsion spring.
In one embodiment, the insulative driving member is a plastic sheet.
In one embodiment, the breakpoint assembly further includes an electrical connector, and the first branch portion of the conductive elastic member is electrically connected to the overvoltage and undervoltage protection assembly through the electrical connector.
In one embodiment, the electrical connector comprises a straight wire with an insulating sheath and a spiral wire fixed on the inner side of the shell by winding on a column on the inner side of the shell, wherein the first branch part of the conductive elastic element is inserted into a cavity formed by the spiral wire to be electrically connected with the spiral wire, and further is electrically connected to the overvoltage and undervoltage protection component through the straight wire.
Drawings
The advantages and objects of the present invention will be better understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the relationship of the various components. In the drawings:
fig. 1 is a schematic diagram of an embodiment of a circuit breaker with an overvoltage and undervoltage protection assembly according to the present invention, schematically showing the position of the overvoltage and undervoltage protection assembly;
fig. 2 is a schematic cross-sectional view of one pole of the circuit breaker of fig. 1;
fig. 3 is a partial schematic view of the overvoltage and undervoltage magnetic disengaging assembly in the overvoltage and undervoltage protection assembly of the circuit breaker and the magnetic disengaging assembly of one pole of the circuit breaker according to the present invention;
fig. 4 schematically shows an overvoltage and undervoltage display assembly of the circuit breaker of the present invention;
fig. 5 schematically illustrates a cross-sectional view of another embodiment of a circuit breaker having an overvoltage and undervoltage protection assembly of the present invention, wherein the circuit breaker includes a breakpoint assembly that is electrically disconnected from a main circuit of the circuit breaker;
figure 6 schematically illustrates a cross-sectional view of the circuit breaker of figure 5 with the break point assembly electrically connected to the main circuit; and
figure 7 schematically illustrates a metal torsion spring and electrical connection in one embodiment of a circuit breaker of the present invention.
Detailed Description
Various embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Here, it is to be noted that, in the drawings, the same reference numerals are given to constituent parts having substantially the same or similar structures and functions, and repeated description thereof will be omitted. The terms "first direction", "second direction", etc. herein are described with respect to the drawings of the present invention, unless otherwise specified. The term "A, B, C, etc. in series" merely indicates the order in which the elements A, B, C, etc. are arranged and does not exclude the possibility of including other elements between a and B and/or between B and C. The descriptions of "first" and "second" are merely for distinguishing between various components and do not limit the scope of the present invention, and "first" may be written as "second" without departing from the scope of the present invention.
The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the interrelationship of each part.
Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to fig. 1 to 7.
Fig. 1 shows an embodiment of the circuit breaker with overvoltage and undervoltage protection assembly of the present invention. As shown in fig. 1, the circuit breaker 100 includes a first pole 1 and a second pole 2 sequentially arranged in a first direction, each pole having a width of 18mm in the first direction x. The circuit breaker 100 further comprises a housing 3 elongated in a second direction y perpendicular to the first direction, wherein the first pole 1 and the second pole 2 are arranged inside the housing 3. In addition, an overvoltage and undervoltage protection component 4 shared by the first pole 1 and the second pole 2 is integrated in the circuit breaker 100, and the overvoltage and undervoltage protection component 4 is electrically connected to a main circuit of the circuit breaker and comprises an electronic circuit board 5 and an overvoltage and undervoltage magnetic disengaging component 6.
The circuit breaker of the present invention is not limited to only containing two poles, but the circuit breaker can also contain three poles or four poles, for example.
Compared with the conventional circuit breaker, the length of the shell in the second direction is only slightly increased, and the width of the shell in the first direction is kept unchanged. For example, the width of the circuit breaker with two poles in the first direction is 36 mm.
Fig. 2 shows a schematic cross-section of the first pole 1 of the circuit breaker of fig. 1. As shown in fig. 2, inside the housing 3, the incoming terminal assembly 7, the disconnecting assembly 8, the overvoltage/undervoltage protection assembly 4, and the outgoing terminal assembly 9 of the first pole 1 are sequentially arranged in the second direction y. Similarly, the incoming terminal assembly, the breaking assembly, the overvoltage and undervoltage protection assembly and the outgoing terminal assembly of the second pole 2 are also arranged in sequence in the second direction y.
The overvoltage and undervoltage magnetic release assembly 6 shown in fig. 1 and 2 is disposed adjacent to the outlet terminal assembly 9, but the present invention is not limited thereto, and the overvoltage and undervoltage magnetic release assembly may be disposed at other suitable positions in the elongated housing 3.
The electronic circuit board 5 is used for detecting a voltage signal in the main circuit of the circuit breaker and is electrically connected to the overvoltage and undervoltage magnetic release assembly 6. For example, in fig. 1 and 2, in the second direction y, the electronic circuit board 5 is arranged adjacent to the overvoltage/undervoltage magnetising-disengaging assembly 6 and between the two-pole outlet terminal 9 and the overvoltage/undervoltage magnetising-disengaging assembly 6. The utility model discloses well electronic circuit board 6's position is not limited to and is shown in fig. 1 and 2, and electronic circuit board can be located other positions department in elongated casing 3 to can be connected with crossing under-voltage magnetic desorption subassembly 6 electricity through the wire.
The circuit interrupting assemblies of the first and second poles include, for example, thermal and magnetic trip assemblies. Furthermore, the circuit breaking assembly comprises a mechanical locking handle device, a contact system, an arc extinguishing system, etc.
For example, a thermal trip assembly includes a bimetallic strip that can bend when overloaded. For example, the magnetic release assembly includes a coil, an iron core, a spring, and a push rod.
Fig. 3 shows a schematic view of a portion of the magnetic release assembly of the overvoltage/undervoltage protection assembly of the circuit breaker and a pole of the circuit breaker. As shown in fig. 3, the overvoltage and undervoltage magnetic release assembly 6 and the magnetic release assembly of the breaker assembly 8 of the first pole 1 of the circuit breaker are disposed on a common support 31, and the support 31 is a part of the casing or disposed inside the casing, so that the overvoltage and undervoltage magnetic release assembly is mechanically connected to the casing. Furthermore, an undervoltage coil of the undervoltage magnet assembly 6 (which is not shown in fig. 3 due to encapsulation) and a switching coil 10 of the magnet assembly in the switching assembly 8 of the first pole 1 are arranged around a common tappet 11. The overvoltage and undervoltage magnetic release assembly 6 and the magnetic release assembly in the circuit breaking assembly 8 of the first pole 1 respectively comprise iron cores, return springs and the like.
The electronic circuit board 5 includes, for example, a signal detection unit that detects a voltage signal in the main circuit of the circuit breaker, and a micro control unit that processes and judges the detected voltage signal. When the signal detection unit detects an overvoltage signal or an undervoltage signal, the micro control unit sends a tripping signal to the undervoltage magnetic disengaging assembly 6, and the undervoltage magnetic disengaging assembly 6 responds to the tripping signal to enable the push rod to move so as to enable the circuit breaker to be opened, so that overvoltage and undervoltage protection of the circuit breaker is realized. After the voltage returns to normal, the overvoltage and undervoltage magnetic release assembly 6 can automatically reset under the action of the reset spring to switch on the circuit.
Fig. 4 schematically shows the overvoltage/undervoltage display assembly 12 of the circuit breaker of the present invention. The overvoltage and undervoltage display component 12 is arranged outside the shell 3, electrically connected with the overvoltage and undervoltage protection component 4, and used for displaying a voltage state or a voltage value in a main loop of the circuit breaker.
For example, the undervoltage display assembly 12 may be an indicator light. When the signal detection unit of the electronic circuit board 5 detects an overvoltage signal or an undervoltage signal, the indicator lamp is turned on. When the voltage of the circuit returns to normal, the indicator light is turned off.
For example, the undervoltage display component 12 may be a digital display module for displaying the voltage value in the circuit in real time.
Through will cross undervoltage protection module integration in the circuit breaker and make one of them utmost point of circuit breaker take off the subassembly with cross undervoltage magnetism and take off subassembly sharing supporting mechanism and push rod, the utility model discloses a circuit breaker is under the condition that does not increase the width, and length only increases a little, therefore has and shows littleer volume, installation simply and the cost is lower. In addition, through setting up intelligent display module, the utility model discloses a circuit breaker can show whether break down and what kind of trouble takes place in the circuit in real time, and the practicality is higher.
Fig. 5 and 6 both show portions of another embodiment of the circuit breaker with an overvoltage and undervoltage protection assembly of the present invention. As shown in fig. 5 and 6, the circuit breaker further includes a breakpoint assembly 13 disposed inside the housing 3. In fig. 5, the circuit breaker is opened, and at this time, the breaking point component 13 is not in contact with the main circuit of the circuit breaker, so that the overvoltage and undervoltage protection component 4 of the circuit breaker is electrically disconnected from the main circuit of the circuit breaker. In fig. 6, the circuit breaker is closed, and at this time, the breaking point component 13 contacts with the main circuit of the circuit breaker, so that the overvoltage and undervoltage protection component 4 is electrically connected with the main circuit.
The disconnection point assembly 13 comprises an insulated drive member 14 and an electrically conductive spring member 15 movably arranged on the inside of the housing. For example, as shown in fig. 5-7, the conductive elastic member 15 is a metal torsion spring, and the insulating driving member 14 is a plastic sheet, wherein the metal torsion spring is rotatable around a pivot shaft 32 provided on the housing 3, and the insulating driving member 14 is provided on the metal torsion spring.
The breakpoint assembly of the present invention is not limited to the above embodiment. For example, the conductive elastic member may be a metal spring.
As shown in fig. 5 to 7, the conductive elastic member 15 includes a first branch portion 16 and a second branch portion 17. The first branch portion 16 is electrically connected to the undervoltage protection device 4. For example, as shown in fig. 7, the breakpoint assembly 13 further includes an electrical connection member 19, the electrical connection member 19 including a straight conductive wire 21 with an insulating sheath and a helical conductive wire 22 fixed to the inside of the housing by being wound around a column on the inside of the housing. The helical wire 22 does not have an insulating sheath. In addition, the first branch portion 16 of the metal torsion spring 15 is electrically connected to the spiral wire 22 by being inserted into the cavity 20 formed by the spiral wire 22, and is further electrically connected to the undervoltage protection assembly 4 by the straight wire 21.
As shown in fig. 6, the metal torsion spring 15 may electrically connect the second branch portion 17 to the main circuit of the circuit breaker by its elastic force.
As shown in fig. 5, the insulated driving component 14 can drive the metal torsion spring 15 to move against the elastic force under the action of the movable contact support 18 of the circuit breaker, so that the second branch portion 17 of the metal torsion spring is far away from the main circuit, thereby disconnecting the electrical connection between the overvoltage and undervoltage protection component 4 and the main circuit.
How the breakpoint component realizes the protection of the overvoltage and undervoltage protection component is explained below with reference to fig. 5 to 6.
When the circuit breaker is switched from the closed state to the open state, as shown in fig. 5, the movable contact support 18 contacts the insulated driving member 14 and causes the insulated driving member to rotate the metal torsion spring around the pivot shaft 32, for example, clockwise, thereby moving the second branch portion 17 of the metal torsion spring 15 away from the main circuit from the on position to the off position. At this time, the electrical connection of the undervoltage protection assembly 4 of the circuit breaker and the main circuit of the circuit breaker is disconnected.
When the circuit breaker is switched from the open state to the closed state, as shown in fig. 6, the movable contact support 18 is away from the insulated driving member 14, and the metal torsion spring 15 is rotated, for example, counterclockwise, about the pivot shaft 32 by the elastic force thereof, so that the second branch portion 17 of the metal torsion spring 15 is returned to the on position from the off position. The disconnection point assembly 13 now electrically connects the overvoltage and undervoltage protection assembly 4 to the main circuit of the circuit breaker.
Through the breakpoint assembly, when the circuit breaker is switched on, the overvoltage and undervoltage protection assembly is electrically connected to a main loop of the circuit breaker, so that the circuit breaker normally works and provides overvoltage and undervoltage protection for the circuit breaker; when the breaker is opened, the overvoltage and undervoltage protection component is electrically disconnected with the main loop, so that the overvoltage and undervoltage protection component cannot be burnt out due to continuous action. Therefore, for example, when an operator mistakenly uses the outlet terminal as the inlet terminal, the breakpoint assembly can break the electrical connection between the overvoltage and undervoltage protection assembly and the main loop, so that the overvoltage and undervoltage protection assembly is prevented from being burnt due to the fact that the electrical connection cannot be broken.
The technical features disclosed above are not limited to the combinations with other features disclosed, and other combinations between the technical features can be performed by those skilled in the art according to the purpose of the present invention to achieve the purpose of the present invention.
Claims (11)
1. A circuit breaker with an overvoltage and undervoltage protection assembly, comprising at least two poles arranged in sequence in a first direction, each of the at least two poles comprising a line inlet terminal assembly, a circuit interrupting assembly and a line outlet terminal assembly, characterized in that,
the circuit breaker comprises a housing elongated in a second direction perpendicular to the first direction, wherein at least two poles are arranged inside the housing,
the circuit breaker is internally integrated with at least two poles sharing overvoltage and undervoltage protection assemblies, wherein in the shell, the incoming line terminal assembly, the circuit breaking assembly, the overvoltage and undervoltage protection assemblies and the outgoing line terminal assembly are sequentially arranged in the second direction, and the overvoltage and undervoltage protection assemblies are electrically connected to a main loop of the circuit breaker and comprise an electronic circuit board and an overvoltage and undervoltage magnetic disengaging assembly.
2. The circuit breaker of claim 1, wherein the undervoltage magnetising assembly is disposed on a common support bracket with the magnetising assembly of the circuit breaking assembly of one of the at least two poles for mechanical connection to the housing.
3. The circuit breaker of claim 2, wherein the undervoltage coil of the undervoltage trip assembly and the trip coil of the trip assembly in the trip assembly of the one pole are disposed about a common pushrod.
4. The circuit breaker of claim 1, wherein the electronics board is disposed adjacent to the undervoltage magnetic release assembly and between the outlet terminal assembly of at least two poles and the undervoltage magnetic release assembly.
5. The circuit breaker of claim 1, further comprising an overvoltage and undervoltage display assembly disposed outside the housing, electrically connected to the overvoltage and undervoltage protection assembly, and configured to display a voltage state or a voltage value in the main circuit.
6. The circuit breaker of claim 1, further comprising a breakpoint assembly disposed inside the housing, wherein the breakpoint assembly electrically disconnects the overvoltage and undervoltage protection assembly from the primary loop when the circuit breaker is tripped; when the circuit breaker is switched on, the breakpoint assembly enables the overvoltage and undervoltage protection assembly to be electrically connected with the main loop.
7. The circuit breaker of claim 6, wherein the disconnection point assembly comprises an insulating driving member and a conductive elastic member movably disposed on an inner side of the housing, wherein the conductive elastic member comprises a first branch portion and a second branch portion, the first branch portion is electrically connected to the overvoltage and undervoltage protection assembly, the conductive elastic member is capable of electrically connecting the second branch portion to the main circuit of the circuit breaker under the action of an elastic force, so that the overvoltage and undervoltage protection assembly is electrically connected to the main circuit, and wherein the insulating driving member is capable of driving the conductive elastic member to move against the elastic force under the action of a movable contact support of the circuit breaker, so that the second branch portion is away from the main circuit, thereby electrically disconnecting the overvoltage and undervoltage protection assembly from the main circuit.
8. The circuit breaker of claim 7, wherein the conductive resilient member is a metal torsion spring, wherein the metal torsion spring is rotatable about a pivot axis disposed on the housing, and wherein the insulative actuator is disposed on the metal torsion spring.
9. The circuit breaker of claim 7 or 8, wherein the insulative actuator is a plastic sheet.
10. The circuit breaker of claim 7, wherein the disconnection point assembly further comprises an electrical connector, and the first branch portion of the conductive spring is electrically connected to the overvoltage and undervoltage protection assembly through the electrical connector.
11. The circuit breaker of claim 10, wherein the electrical connection member comprises a straight conductive wire with an insulating sheath and a spiral conductive wire fixed to an inner side of the case by being wound around a column of the inner side of the case, wherein the first branch portion of the conductive elastic member is inserted into a cavity formed by the spiral conductive wire to be electrically connected to the spiral conductive wire, and is further electrically connected to the overvoltage/undervoltage protection assembly through the straight conductive wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920890512.8U CN209843646U (en) | 2019-06-11 | 2019-06-11 | Circuit breaker with over-voltage and under-voltage protection assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920890512.8U CN209843646U (en) | 2019-06-11 | 2019-06-11 | Circuit breaker with over-voltage and under-voltage protection assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209843646U true CN209843646U (en) | 2019-12-24 |
Family
ID=68898516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920890512.8U Active CN209843646U (en) | 2019-06-11 | 2019-06-11 | Circuit breaker with over-voltage and under-voltage protection assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209843646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062213A1 (en) * | 2020-09-27 | 2022-03-31 | 深圳曼顿科技有限公司 | Direct-current circuit breaker |
-
2019
- 2019-06-11 CN CN201920890512.8U patent/CN209843646U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022062213A1 (en) * | 2020-09-27 | 2022-03-31 | 深圳曼顿科技有限公司 | Direct-current circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3078090B1 (en) | Method and apparatus for sensing the status of a circuit interrupter | |
| US8369052B2 (en) | Modular circuit breaker | |
| EP0295131A2 (en) | An improved electric circuit breaker | |
| AU2009214807B2 (en) | A Residual-Current Circuit Breaker | |
| US5231365A (en) | Circuit breaker | |
| CN211629005U (en) | Circuit fault detection module integrated in circuit breaker | |
| WO1996003759A1 (en) | Module for use with a miniature circuit breaker | |
| WO2009105184A1 (en) | Multi-pole armature interlock for circuit breakers | |
| CN209843646U (en) | Circuit breaker with over-voltage and under-voltage protection assembly | |
| EP1724803B1 (en) | Electronic device to be associated with an electrical apparatus | |
| CA2572209A1 (en) | Two pole circuit interrupter employing a single arc fault or ground fault trip circuit | |
| EP1050059B1 (en) | Instantaneous trip power transformer | |
| RU2541517C2 (en) | Automatic circuit breaker | |
| CN217280659U (en) | Circuit breaker | |
| CN101295607B (en) | Trip indicator member, and limiter and electrical switching apparatus including a plurality of trip indicator members | |
| CN111276374B (en) | Low-voltage protection switch device | |
| EP2175468A2 (en) | Bipolar automatic circuit breaker for low-voltage applications | |
| CN112735924A (en) | Intelligent circuit breaker | |
| CA2296983C (en) | Ground fault circuit breaker | |
| CN219716775U (en) | Miniature circuit breaker | |
| CN113178366B (en) | Small intelligent circuit breaker with reclosing function | |
| CN108899259A (en) | Earth leakage circuit breaker | |
| CN220368472U (en) | Novel SPD assembly | |
| CN219677169U (en) | Circuit breaker | |
| CN220439539U (en) | Novel lightning protection circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |