Instantaneous breaker with low-power thermal protection function
By designing a solder melting-driven ejection component in the instantaneous circuit breaker, the trigger element is disengaged from the busbar, generating a trigger signal to cut off the circuit. This solves the problem that existing circuit breakers cannot protect low-current circuits and achieves safe and reliable circuit protection.
Patent Information
- Application Number
- CN202422730159.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-08
AI Technical Summary
Existing circuit breakers cannot blow in time at low currents, resulting in an inability to effectively protect the circuit.
Design an instantaneous interrupter with low-current protection function. By melting the solder between the trigger element and the conductor busbar, the trigger element is driven to eject the assembly, generating a trigger signal and cutting off the circuit, thus achieving low-current protection.
It provides timely protection for low-current circuits, ensuring circuit safety and reliability. It also features a simple structure, is easy to manufacture and assemble, and reduces costs.
Smart Images
Figure CN223486871U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of circuit protection technology, and in particular to an instantaneous interrupter with low thermal protection function. Background Technology
[0002] Existing circuit breakers utilize a metal conductor as a fusible element connected in series with a copper busbar in the circuit. When an overload or short-circuit current passes through the fusible element, it melts due to its own heating. The melted fusible element generates a trigger signal, which is transmitted to the fuse body. The fuse body then cuts off the copper busbar in the circuit, thus achieving instantaneous interruption of the short circuit to prevent damage to electrical equipment and prevent the spread of accidents, thereby protecting the power grid and electrical equipment. However, in existing circuit breakers, the trigger element can only melt and generate a voltage difference to form a trigger signal when a high current is generated in the circuit, resulting in high heat. When a low current is generated in the circuit, the low heat generated is insufficient to quickly melt the trigger element, preventing it from generating a trigger signal in time. Consequently, the circuit cannot be cut off in time. Therefore, existing circuit breakers cannot protect circuits with low current. Utility Model Content
[0003] This disclosure provides an instantaneous interrupter with low thermal protection function to at least solve the above-mentioned problems in the prior art.
[0004] To achieve the above objectives, this disclosure provides the following technical solution: an instantaneous interrupter with low-magnification thermal protection function, wherein the instantaneous interrupter with low-magnification thermal protection function comprises:
[0005] Circuit breaker body;
[0006] A conductive component extends through the circuit breaker body along a first direction. The conductive component includes a first conductive busbar, a trigger element, and a second conductive busbar arranged sequentially along the first direction. The trigger element is fixedly connected to the first conductive busbar and the second conductive busbar by brazing and is electrically connected to the circuit breaker body.
[0007] An ejector assembly is disposed inside the main body of the circuit breaker and on one side of the trigger element in a second direction perpendicular to the first direction; wherein,
[0008] When a low current is generated in the circuit, the connection between the trigger and the first and second conductive busbars is melted. The ejection assembly drives the trigger to move along the second direction until it is separated from the first and second conductive busbars, so that the trigger generates a trigger signal and transmits it to the circuit breaker body. After the circuit breaker body receives the trigger signal, it cuts off the first or second conductive busbar.
[0009] In one embodiment, the solder used when the trigger is fixed to the first conductive bus and the second conductive bus by brazing is tin or tin alloy.
[0010] In one possible implementation, the circuit breaker body includes:
[0011] The housing has the conductive component extending through it along a first direction, and the ejector component is housed within the housing.
[0012] An interruption structure, housed within the housing, is used to acquire a trigger signal and interrupt the first or second conductive busbar.
[0013] In one embodiment, the housing has a guide groove extending in a second direction inside, the guide groove being located on one side of the trigger member, and the ejection assembly includes:
[0014] An elastic element is housed within the guide groove, with one end of the elastic element abutting against the bottom wall of the guide groove;
[0015] An ejector member, one end of which abuts against the other end of the elastic member and is slidably housed in the guide groove, the other end of which extends out of the guide groove and abuts against the trigger member; wherein...
[0016] The elastic element is initially in a compressed state.
[0017] In one possible implementation,
[0018] The trigger element protrudes from the second conductive bus at both ends in the second direction, and the ejector element includes:
[0019] The movable body is slidably housed in the guide groove, and the other end of the elastic element abuts against the movable body;
[0020] Two ejector rods are spaced apart along a third direction, with one end of each ejector rod connected to the movable body and the other end of each ejector rod extending out of the guide groove and abutting against one end of the trigger member; wherein, the third direction is perpendicular to the first direction and the second direction.
[0021] In one embodiment, the movable body has a storage groove on the side opposite to the ejector rod, and the other elastic element is stored in the storage groove.
[0022] In one embodiment, the ejection assembly further includes a first energy-absorbing element, which is disposed between the two ejection rods and spaced apart from the movable body, and the first energy-absorbing element is connected to the groove wall of the guide groove.
[0023] In one embodiment, the breaking structure includes:
[0024] A disconnecting assembly, which is housed in the housing and disposed on one side of the second conductive busbar in the second direction, is used to disconnect the second conductive busbar;
[0025] A circuit board is disposed inside the housing and electrically connected to the switching assembly, and the circuit board and the trigger are electrically connected by wires.
[0026] In one embodiment, the interruption structure further includes a second energy-absorbing element, which is disposed on the other side of the second conductive busbar in the second direction and is used to absorb energy.
[0027] In one embodiment, the trigger signal generated by the trigger element is an internal trigger signal, and the trigger signal generated by the trigger element acquired by the circuit board is an internal trigger signal. The circuit board is also used to acquire external trigger signals generated by external components to control the switching component to cut off the first conductive bus or the second conductive bus.
[0028] In the aforementioned instantaneous circuit breaker with low-current protection, when a low-current is generated in the circuit, the low-current generated in the circuit melts the solder at the connection between the trigger element and the first and second conductive busbars. The ejector assembly lifts the trigger element along the second direction and separates the trigger element from the first and second conductive busbars. The trigger element generates a voltage difference and forms a trigger signal. After the circuit breaker body obtains the trigger signal, it directly cuts off the first or second conductive busbar, so that the conductive components form an open circuit, thereby achieving protection for the circuit that generates the low-current.
[0029] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description
[0030] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which:
[0031] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
[0032] Figure 1 A schematic diagram of the structure of an instantaneous interrupter with low thermal protection function in an embodiment of this disclosure is shown;
[0033] Figure 2 Shown Figure 1A cross-sectional view of the instantaneous circuit breaker with low thermal protection function along the II-II direction;
[0034] Figure 3 Shown Figure 2 A schematic diagram of the structure of the interrupted structure, conductive components and ejector components;
[0035] Figure 4 Shown Figure 3 A schematic diagram of the structure of the trigger element, elastic element and ejector element.
[0036] Explanation of the labels in the diagram:
[0037] In the diagram: 11. Main body of the circuit breaker; 111. Housing; 112. Breaking structure; 1121. Breaking assembly; 1122. Circuit board; 1123. Second energy-absorbing component; 113. Guide groove; 12. Conductive assembly; 121. First conductive busbar; 122. Trigger; 123. Second conductive busbar; 13. Ejection assembly; 131. Elastic component; 132. Ejector; 1321. Movable body; 1322. Ejection rod; 1323. Storage groove; 133. First energy-absorbing component. Detailed Implementation
[0038] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.
[0039] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this disclosure can be achieved, and this is not limited herein.
[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.
[0041] The embodiments of this utility model will be described below with reference to the accompanying drawings.
[0042] For ease of explanation, in Figure 1 and Figure 3A three-dimensional Cartesian coordinate system is added. The X-axis is the first direction, which is the setting direction of the first conductive bar 121, the trigger 122 and the second conductive bar 123. The Z-axis is the second direction, which is the movement direction of the trigger 122 pushed up by the ejector assembly 13. The Y-axis is the third direction, which is the setting direction of the two ejector rods 1322.
[0043] Please refer to the following: Figure 1 and Figure 2 This disclosure provides an instantaneous interrupter with low-magnification thermal protection. The instantaneous interrupter includes an interrupter body 11, a conductive component 12, and an ejector component 13. The conductive component 12 extends through the interrupter body 11 along a first direction and includes a first conductive bar 121, a trigger element 122, and a second conductive bar 123 arranged sequentially along the first direction. The trigger element 122 is fixedly connected to the first conductive bar 121 and the second conductive bar 123 by brazing and is electrically connected to the interrupter body 11. The ejector component 13 is disposed inside the interrupter body 11 and is located at the trigger element 122 perpendicular to the first direction. On one side of the second direction, when a low current is generated in the circuit, the connection between the trigger 122 and the first conductive bus 121 and the second conductive bus 123 is melted. When the driving force generated by the ejector assembly is greater than the bonding force between the melted trigger 122 and the connection between the first conductive bus 121 and the second conductive bus 123, the ejector assembly 13 drives the trigger 122 to move along the second direction until it disengages from the first conductive bus 121 and the second conductive bus 123, so that the trigger 122 generates a trigger signal and transmits it to the circuit breaker body 11. After receiving the trigger signal, the circuit breaker body 11 cuts off the first conductive bus 121 or the second conductive bus 123. For example, the trigger signal can be the voltage difference generated by the trigger 122.
[0044] In the aforementioned instantaneous circuit breaker with low-current protection function, when the circuit generates a low-current, the low-current generated in the circuit melts the solder at the connection between the trigger 122 and the first conductive bus 121 and the second conductive bus 123. The ejector assembly 13 lifts the trigger 122 along the second direction and separates the trigger 122 from the first conductive bus 121 and the second conductive bus 123. A voltage difference is formed on the trigger 122 and a trigger signal is generated. After the circuit breaker body 11 obtains the trigger signal, it directly cuts off the first conductive bus 121 or the second conductive bus 123 so that the conductive assembly 12 forms an open circuit, thereby achieving protection for the circuit that generates the low-current.
[0045] It is understandable that when a high current is generated in the circuit, the high heat generated in the circuit can also melt the solder at the connection between the trigger 122 and the first conductive bus 121 and the second conductive bus 123, and the ejector assembly 13 can also lift the trigger 122, so that the trigger 122 generates a voltage difference and forms a trigger signal. Therefore, the instantaneous interrupter with low heat protection function in this application can also protect the high current circuit.
[0046] Specifically, the low-current range in a circuit is typically a current value greater than 1 times the normal current and less than 5 times the normal current value.
[0047] In this embodiment, the materials of the first conductive bus 121 and the second conductive bus 123 are not limited. For example, the materials of the first conductive bus 121 and the second conductive bus 123 can be copper, aluminum, silver or alloy materials with good conductivity.
[0048] In some embodiments, when the trigger 122 is fixed to the first conductive bus 121 and the second conductive bus 123 by brazing, the brazing filler metal used is tin or tin alloy, so that when a low-level heat is generated in the circuit, the brazing filler metal melts quickly, so that the bonding force between the trigger 122 and the first conductive bus 121 and the second conductive bus 123 gradually decreases until the fixed connection is released.
[0049] Please see Figure 2 In some embodiments, the interrupter body 11 includes a housing 111 and an interruption structure 112. The conductive component 12 extends through the housing 111 along a first direction. The housing 111 is made of insulating material. The ejection component 13 is housed inside the housing 111. The interruption structure 112 is housed inside the housing 111. The interruption structure 112 is used to acquire a trigger signal and cut off the first conductive bus 121 or the second conductive bus 123.
[0050] Thus, the circuit is protected by obtaining a trigger signal through the switching structure 112 and cutting off the first conductive bus 121 or the second conductive bus 123. At the same time, the housing 111 houses and protects the switching structure 112, the conductive component 12 and the ejector component 13, and can effectively isolate current and voltage to ensure the safety of the operator.
[0051] Please refer to the following: Figure 2 and Figure 3In some embodiments, the housing 111 has a guide groove 113 extending in a second direction inside. The guide groove 113 is located on one side of the trigger member 122. The ejection assembly 13 includes an elastic member 131 and an ejector member 132. The elastic member 131 is housed in the guide groove 113, with one end abutting against the bottom wall of the guide groove 113. One end of the ejector member 132 abuts against the other end of the elastic member 131 and is slidably housed in the guide groove 113. The other end of the ejector member 132 extends out of the guide groove 113 and abuts against the trigger member 122. The elastic member 131 is initially in a compressed state. For example, the elastic member 131 can be a spring.
[0052] In the initial state, the trigger 122 is fixedly connected to the first conductive bus 121 and the second conductive bus 123, and the elastic member 131 is compressed by the ejector 132, so that the elastic member 131 is in a compressed state in the initial state. When a low current is generated in the circuit, the low heat generated in the circuit will melt the solder at the connection between the trigger 122 and the first conductive bus 121 and the second conductive bus 123, so that the bonding force between the trigger 122 and the first conductive bus 121 and the second conductive bus 123 gradually decreases. When the elastic force released by the elastic member 131 is greater than the bonding force, the elastic force released by the elastic member 131 drives the trigger 122 to move in the second direction and disengage from the first conductive bus 121 and the second conductive bus 123. At this time, the trigger 122 generates a voltage difference and forms a trigger signal. The trigger signal is transmitted to the switching structure 112. After the switching structure 112 obtains the trigger signal, it cuts off the first conductive bus 121 or the second conductive bus 123.
[0053] Thus, when a low current is generated in the circuit, the elastic force released by the elastic element 131 can automatically push up the trigger element 122, causing the trigger element 122 to generate a trigger signal, realizing passive triggering of the trigger signal, with fast response speed, and enabling the switching structure 112 to automatically cut off the circuit after obtaining the trigger signal, thereby realizing passive protection of the circuit, which is safe and reliable. Moreover, the structure of the ejector component 13 is simpler, easier to manufacture and assemble, and reduces production costs.
[0054] Please refer to the following: Figure 2 and Figure 4 In some embodiments, the trigger 122 protrudes from the second conductive busbar 123 at both ends in the second direction. The ejector 132 includes a movable body 1321 and two ejector rods 1322. The movable body 1321 is slidably housed in the guide groove 113. The other end of the elastic member 131 abuts against the movable body 1321. The two ejector rods 1322 are spaced apart along the third direction, and one end of each ejector rod 1322 is connected to the movable body 1321. The other end of each ejector rod 1322 extends out of the guide groove 113 and abuts against one end of the trigger 122.
[0055] Thus, the elastic force released by the elastic element 131 drives the movable body 1321 to move the two push rods 1322 along the second direction, so that the two push rods 1322 acting on both ends of the trigger element 122 can stably lift the trigger element 122, so as to reliably disengage the trigger element 122 from the first conductive bus 121 and the second conductive bus 123, thereby ensuring that the trigger element 122 can stably and reliably generate a trigger signal when the circuit generates a low current.
[0056] Please see Figure 4 In some embodiments, the movable body 1321 has a storage groove 1323 on the side opposite to the ejector rod 1322, and the other elastic member 131 is stored in the storage groove 1323 to limit the position of the elastic member 131 and prevent the elastic member 131 from tilting or shifting, so that the elastic member 131 can push the trigger member 122 up through the ejector 132.
[0057] Please see Figure 4 In this embodiment, the number of elastic members 131 is the same as the number of receiving slots 1323, and there are multiple elastic members 131. The multiple elastic members 131 are spaced apart along the third direction so that the ejector 132 can be evenly stressed, so that the ejector 132 can move stably along the second direction, thereby ensuring that the trigger 122 is lifted and improving the reliability of circuit disconnection.
[0058] Please see Figure 2 In some embodiments, the ejection assembly 13 further includes a first energy-absorbing element 133, which is disposed between the two ejection rods 1322 and spaced apart from the movable body 1321, and is connected to the groove wall of the guide groove 113.
[0059] Thus, the first energy-absorbing element 133 is used to absorb the arc energy generated when the trigger element 122 is lifted in a low-current circuit, so as to quickly extinguish the arc, or to absorb the arc energy generated when the trigger element 122 melts completely in a high-current circuit, so as to quickly extinguish the arc.
[0060] Furthermore, the first energy-absorbing element 133 is an energy-absorbing medium. Specifically, the first energy-absorbing element 133 can be a wire mesh, a steel wool ball, or a filling quartz sand.
[0061] In this application, the material of the trigger 122 is not limited. For example, the material of the trigger 122 can be tin or tin alloy or lead-antimony alloy, or it can be made of copper, aluminum, silver or alloy material with good conductivity.
[0062] Please see Figure 3In some embodiments, the interruption structure 112 includes an interruption component 1121 and a circuit board 1122. The interruption component 1121 is housed in the housing 111 and disposed on one side of the second conductive bus 123 in the second direction. The interruption component 1121 is used to cut off the second conductive bus 123. The circuit board 1122 is disposed in the housing 111 and electrically connected to the interruption component 1121. The circuit board 1122 and the trigger 122 are electrically connected by wires.
[0063] Thus, when the circuit board 1122 is connected to the trigger 122 by wires, the trigger signal between the trigger 122 and the circuit board 1122 can be stably transmitted, thereby improving the stability of the trigger signal transmission.
[0064] Furthermore, the interruption assembly 1121 includes a gas generating device and a cutting actuator. The gas generating device is electrically connected to the circuit board 1122 and is used to drive the cutting actuator to cut off the second conductive busbar 123.
[0065] Understandably, the circuit board 1122 is provided with a detection circuit for detecting the current or voltage difference of the trigger 122 through conductivity.
[0066] Please see Figure 2 In some embodiments, the interruption structure 112 further includes a second energy-absorbing element 1123, which is disposed on the other side of the second conductive bus 123 in the second direction and is used to absorb energy.
[0067] Thus, the second energy-absorbing element 1123 is used to absorb the arc energy generated when the interrupting component 1121 cuts off the second conductive bus 123, so as to quickly extinguish the arc.
[0068] Furthermore, the second energy-absorbing element 1123 is an energy-absorbing medium. Specifically, the second energy-absorbing element 1123 can be a wire mesh, a steel wool ball, or a filling of quartz sand.
[0069] In some embodiments, the trigger signal generated by the trigger element 122 is an internal trigger signal, and the trigger signal generated by the trigger element 122 acquired by the circuit board 1122 is also an internal trigger signal. The circuit board 1122 is further used to acquire external trigger signals generated by external components to control the switching component 1121 to cut off the first conductive bus 121 or the second conductive bus 123. For example, the external component may be the main control cabinet.
[0070] Thus, when the trigger signal generated by the trigger element 122 is transmitted to the circuit board 1122, the circuit board 1122 receives the internal trigger signal and controls the switching component 1121 to cut off the first conductive bus 121 or the second conductive bus 123, thereby realizing passive protection of the circuit. When the external trigger signal generated by the external main control cabinet is transmitted to the circuit board 1122, the circuit board 1122 receives the external trigger signal and controls the switching component 1121 to cut off the first conductive bus 121 or the second conductive bus 123, thereby realizing active protection of the circuit. This achieves integrated active and passive protection of the circuit, making the circuit protection safer and more reliable.
[0071] The operating principle of the aforementioned instantaneous circuit breaker with low thermal protection function is roughly as follows:
[0072] When a low current is generated in the circuit, a low heat is generated to melt the solder at both ends of the trigger 122, thereby releasing the trigger 122 from the first conductive bus 121 and the second conductive bus 123. The first energy-absorbing element 133 absorbs the arc generated by the trigger 122. At this time, the elastic element 131 compressed in the guide groove 113 releases its elastic force to drive the ejector 132 to slide along the guide groove 113 and lift the trigger 122, so that the trigger 122 is separated from the first conductive bus 121 and the second conductive bus 123 and a voltage drop is generated to form a trigger signal. The trigger signal generated by the trigger 122 is transmitted to the circuit board 1122 through the wire. After the circuit board 1122 receives the trigger signal, it controls the switching component 1121 to cut off the second conductive bus 123 and absorbs the circuit generated at the moment the second conductive bus 123 is cut off through the second energy-absorbing element 1123, so as to achieve stable circuit cutting and realize instantaneous protection of the low current circuit.
[0073] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. An instantaneous circuit breaker with low-magnification thermal protection function, characterized in that, The instantaneous interrupter with low-magnification thermal protection function includes: Circuit breaker body; A conductive component extends through the circuit breaker body along a first direction. The conductive component includes a first conductive busbar, a trigger element, and a second conductive busbar arranged sequentially along the first direction. The trigger element is fixedly connected to the first conductive busbar and the second conductive busbar by brazing and is electrically connected to the circuit breaker body. An ejector assembly is disposed inside the main body of the circuit breaker and on one side of the trigger element in a second direction perpendicular to the first direction; wherein, When a low current is generated in the circuit, the connection between the trigger and the first and second conductive busbars is melted. The ejection assembly drives the trigger to move along the second direction until it is separated from the first and second conductive busbars, so that the trigger generates a trigger signal and transmits it to the circuit breaker body. After the circuit breaker body receives the trigger signal, it cuts off the first or second conductive busbar.
2. The instantaneous interrupter with low-magnification thermal protection function according to claim 1, characterized in that, When the trigger element is fixed to the first conductive bus and the second conductive bus by brazing, the brazing filler metal used is tin or tin alloy.
3. The instantaneous interrupter with low-magnification thermal protection function according to claim 1, characterized in that, The main body of the circuit breaker includes: The housing has the conductive component extending through it along a first direction, and the ejector component is housed within the housing. An interruption structure, housed within the housing, is used to acquire a trigger signal and interrupt the first or second conductive busbar.
4. The instantaneous interrupter with low-magnification thermal protection function according to claim 3, characterized in that, The housing has a guide groove extending in a second direction inside, the guide groove being located on one side of the trigger member, and the ejection assembly includes: An elastic element is housed within the guide groove, with one end of the elastic element abutting against the bottom wall of the guide groove; An ejector member, one end of which abuts against the other end of the elastic member and is slidably housed in the guide groove, the other end of which extends out of the guide groove and abuts against the trigger member; wherein... The elastic element is initially in a compressed state.
5. The instantaneous interrupter with low-magnification thermal protection function according to claim 4, characterized in that, The trigger element protrudes from the second conductive bus at both ends in the second direction, and the ejector element includes: The movable body is slidably housed in the guide groove, and the other end of the elastic element abuts against the movable body; Two ejector rods are spaced apart along a third direction, with one end of each ejector rod connected to the movable body and the other end of each ejector rod extending out of the guide groove and abutting against one end of the trigger member; wherein... The third direction is perpendicular to both the first direction and the second direction.
6. The instantaneous interrupter with low-magnification thermal protection function according to claim 5, characterized in that, The movable body has a storage groove on the side opposite to the ejector rod, and the other elastic element is stored in the storage groove.
7. The instantaneous interrupter with low-magnification thermal protection function according to claim 5, characterized in that, The ejection assembly further includes a first energy-absorbing element, which is disposed between the two ejection rods and spaced apart from the movable body, and is connected to the groove wall of the guide groove.
8. The instantaneous interrupter with low-magnification thermal protection function according to claim 3, characterized in that, The interruption structure includes: A disconnecting assembly, which is housed in the housing and disposed on one side of the second conductive busbar in the second direction, is used to disconnect the second conductive busbar; A circuit board is disposed inside the housing and electrically connected to the switching assembly, and the circuit board and the trigger are electrically connected by wires.
9. The instantaneous interrupter with low-magnification thermal protection function according to claim 8, characterized in that, The interruption structure further includes a second energy-absorbing element, which is disposed on the other side of the second conductive busbar in the second direction and is used to absorb energy.
10. The instantaneous interrupter with low-magnification thermal protection function according to claim 8, characterized in that, The trigger signal generated by the triggering element is an internal trigger signal. The trigger signal generated by the triggering element and acquired by the circuit board is also an internal trigger signal. The circuit board is also used to acquire external trigger signals generated by external components to control the switching component to cut off the first conductive busbar or the second conductive busbar.