A reclosing circuit breaker

Abstract

The application relates to the technical field of circuit breakers, and discloses a reclosing circuit breaker which comprises a shell, a movable contact rotatably connected to the shell, a static contact arranged on the shell, a connecting spring arranged on the movable contact and used for driving the movable contact to abut against the static contact, a fixing block arranged on the shell, an indicating strip slidably connected to the fixing block, a display hole arranged on the shell and used for exposing the indicating strip, a linkage arranged on the movable contact, and a mounting spring arranged on the fixing block and used for driving the indicating strip to abut against the fixing block, wherein the elastic force of the mounting spring is weaker than that of the connecting spring. Since the elastic force of the mounting spring is weaker than that of the connecting spring, the mounting spring is prone to elastic fatigue relative to the connecting spring, so that a worker can quickly judge whether the connecting spring is in elastic fatigue by observing the position of the indicating strip, and the continuity of power supply in the reclosing circuit breaker is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of circuit breakers, and in particular to a reclosing circuit breaker. Background Technology

[0002] A reclosing circuit breaker is a device that solves the problem of power outages caused by temporary faults by automatically closing the circuit. Its use significantly improves the stability and reliability of power supply systems. Reclosing circuit breakers are commonly used in places with high requirements for power supply continuity, such as power plants, substations, hospitals, or subways.

[0003] In related technologies, reclosing circuit breakers include a housing, a moving contact rotatably connected to the housing, a stationary contact inside the housing, and a connecting spring inside the moving contact. The connecting spring drives the moving contact to abut against the stationary contact, thereby connecting the circuit.

[0004] In locations where high power supply continuity is required, the connecting springs may weaken due to elastic fatigue during long-term use of circuit breakers. In such cases, it is difficult for staff to detect the elastic fatigue of the connecting springs during routine maintenance, which can lead to unstable connections between the moving and stationary contacts, resulting in intermittent power supply and affecting power continuity. Summary of the Invention

[0005] To address the difficulty in detecting elastic fatigue in connecting springs, this application provides a reclosing circuit breaker.

[0006] This application provides a reclosing circuit breaker, which adopts the following technical solution: A reclosing circuit breaker includes a housing, a moving contact rotatably connected to the housing, a stationary contact on the housing, a connecting spring on the moving contact, the connecting spring driving the moving contact to abut against the stationary contact, a fixing block on the housing, an indicator strip slidably connected to the fixing block, a display hole on the housing for the indicator strip to protrude, a linkage on the housing, the linkage being disposed on the moving contact, and a mounting spring on the fixing block driving the indicator strip to abut against the fixing block, the elastic force of the mounting spring being weaker than that of the connecting spring; when the moving contact abuts against the stationary contact, both the mounting spring and the connecting spring are in a compressed state; when the moving contact and the stationary contact separate, the linkage drives the indicator strip to slide on the housing, and both the mounting spring and the connecting spring are in a compressed state; when the mounting spring experiences elastic fatigue, the indicator strip is not in the display hole.

[0007] By adopting the above technical solution, the moving contact abuts against the stationary contact. At this time, the connecting spring in the moving contact is in a compressed state, and the mounting spring presses the indicator strip, meaning the mounting spring is also in a compressed state. When the moving contact and the stationary contact separate, the connecting spring is in a compressed state, and the moving contact drives the indicator strip to slide on the fixed block through the linkage, thus compressing the mounting spring. This keeps the states of the mounting spring and the connecting spring consistent. Since the elastic force of the mounting spring is weaker than that of the connecting spring, the mounting spring is more prone to elastic fatigue compared to the connecting spring. If the mounting spring experiences elastic fatigue, the connecting spring has not yet experienced elastic fatigue. At this time, the indicator strip is not in the display hole, allowing the operator to quickly determine whether the connecting spring is about to experience elastic fatigue by observing the position of the indicator strip. This allows the operator to replace the connecting spring in a timely manner, reducing the possibility of unstable circuit connection in the reclosing circuit breaker due to elastic fatigue of the connecting spring and enhancing the continuity of power supply in the reclosing circuit breaker.

[0008] Optionally, the indicator bar includes a first bar, a second bar, and a third bar, with the second bar positioned between the first and third bars. The first bar is positioned at one end of the second bar, and the third bar is positioned at the other end of the second bar. The second bar is slidably connected to a fixed block. The mounting spring is positioned on the first bar. The fixed block has a movable groove for the indicator bar to move, and a limiting block is provided in the movable groove. A reset element for driving the indicator bar to reset is also provided in the movable groove. When the moving contact abuts against the stationary contact, the mounting spring is in a compressed state, the first bar abuts against the limiting block, and the first bar is displayed in the display hole. When the moving contact separates from the stationary contact, the mounting spring is in a stretched state, the second bar abuts against the limiting block, and the third bar is displayed in the display hole.

[0009] By adopting the above technical solution, a spring is installed on the first bar, which compresses the first bar, causing it to abut against the limiting block. This allows the first bar to be displayed in the display hole, enabling operators to determine the opening and closing status of the reclosing circuit breaker by observing the indicator bar in the display hole. When the moving contact and stationary contact separate, the moving contact drives the indicator bar to move via the linkage. Since the first bar is located at one end of the second bar and the third bar is located at the other end of the second bar, the first and third bars are positioned on different sides, allowing the third bar to abut against the limiting block. This allows the indicator bar to move away from the installation spring, causing it to slide on the fixed block, displaying the third bar in the display hole. At this time, as the indicator bar slides on the fixed block, the installation spring changes from a compressed state to an extended state, making the state of the installation spring the same as that of the connecting spring. This makes the elastic fatigue of the installation spring similar to that of the connecting spring, allowing operators to determine the elastic fatigue of the connecting spring based on the elastic fatigue of the installation spring. If the linkage fails to abut the indicator bar, a reset component resets the indicator bar, allowing the next linkage component to move the indicator bar.

[0010] Optionally, a mounting block is slidably connected to the first strip, and the mounting block is disposed on the mounting spring.

[0011] By adopting the above technical solution, the mounting block is set on the mounting spring and slidably connected to the first strip. The indicator strip slides on the fixed block, which reduces the sliding of the mounting spring and keeps the mounting spring in a vertical state, reducing the possibility of premature elastic fatigue of the mounting spring due to the offset of the mounting spring.

[0012] Optionally, the linkage includes a linkage bar with a linkage block on it, and both the linkage bar and the linkage block are located on the movement path of the third bar; when the moving contact and the stationary contact separate, the linkage bar pushes the indicator bar to slide on the fixed block, and the third bar abuts against the limiting block.

[0013] By adopting the above technical solution, when the moving contact and the stationary contact are separated, the moving contact can drive the moving contact to move because both the linkage bar and the linkage block are located on the movement path of the third bar. This allows the linkage block to drive the third bar to move, enabling the indicator bar to move along the direction from the third bar to the first bar, thus achieving the sliding of the indicator bar on the fixed block. Furthermore, since the linkage block is located on the movement path of the third bar, it can restrict the movement of the third bar towards the linkage member, allowing the third bar to be stably located on the fixed block.

[0014] Optionally, the fixing block is provided with a display block, which is located on the side of the indicator strip away from the display hole, and the color of the display block is different from the color of the indicator strip.

[0015] By adopting the above technical solution, the display block is located on the side of the indicator strip away from the display hole. When the indicator strip moves laterally on the fixed block, the display block can be exposed from the display hole, allowing the staff to directly observe the display block. In addition, the color of the display block is different from the color of the indicator strip, making it more intuitive for the staff to observe.

[0016] Optionally, the display block is provided with a first magnet, and the fixing block is provided with a second magnet. The second magnet repels the first magnet, and the repulsive force of the second magnet on the first magnet is less than the force exerted by the mounting spring on the indicator strip. When the elastic force of the mounting spring is less than the repulsive force of the second magnet on the first magnet due to elastic fatigue, the display block drives the indicator strip to slide, and the display block can display in the display hole.

[0017] By adopting the above technical solution, the second magnet repels the first magnet, allowing the display block to move toward the display hole, so that the staff can quickly see the display block through the display hole; since the repulsive force of the second magnet on the first magnet is less than the force of the mounting spring on the indicator strip, when the indicator strip is located on the side of the display block facing the display hole, the display block will not drive the indicator strip to move, allowing the indicator strip to restrict the movement of the display block.

[0018] Optionally, the display block has a display ramp, the distance between the display ramp and the display hole gradually increases along the direction from the first bar to the mounting spring, and the moving path of the indicator bar intersects with the moving path of the display ramp.

[0019] By adopting the above technical solution, when the mounting spring experiences elastic fatigue, the elastic force of the mounting spring on the indicator bar weakens. At this time, the repulsive force of the second magnet on the first magnet remains unchanged until the repulsive force of the second magnet on the first magnet is greater than the force exerted by the mounting spring on the indicator bar. By gradually increasing the distance between the display ramp and the display hole along the direction from the first bar to the mounting spring, the display block can drive the indicator bar to move on the fixed block through the display ramp. This allows the indicator bar to still move even when the reclosing circuit breaker has not been opened or closed, so that the staff can more quickly observe whether the mounting spring has experienced elastic fatigue.

[0020] Optionally, the limiting block is provided with a limiting slope, which is located on the moving path of the second strip; when the moving contact and the stationary contact separate, the distance between the limiting slope and the third strip gradually increases along the direction from the linkage to the indicator strip.

[0021] By adopting the above technical solution, when the moving contact and the stationary contact separate, the distance between the limiting inclined surface and the third strip gradually increases along the direction from the linkage to the indicator strip. Since the limiting inclined surface is located on the moving path of the second strip, the indicator strip can move along the limiting inclined surface, allowing the indicator strip to change from the third strip abutting the limiting block to the first strip abutting the limiting block, so that the indicator strip can be reset.

[0022] In summary, this application includes at least one of the following beneficial technical effects: When the moving contact abuts against the stationary contact, the connecting spring in the moving contact is compressed, and the mounting spring presses the indicator bar, meaning the mounting spring is also compressed. When the moving and stationary contacts separate, the connecting spring is compressed again, and the moving contact, through a linkage, drives the indicator bar to slide on the fixed block, compressing the mounting spring. This ensures that the mounting spring and the connecting spring maintain a consistent state. Because the elastic force of the mounting spring is weaker than that of the connecting spring, the mounting spring is more prone to elastic fatigue. If the mounting spring experiences elastic fatigue, the connecting spring has not yet, and the indicator bar is not in the display hole. This allows operators to quickly determine whether the connecting spring is about to experience elastic fatigue by observing the position of the indicator bar, enabling timely replacement of the connecting spring. This reduces the risk of unstable circuit connection in the reclosing circuit breaker due to elastic fatigue of the connecting spring, enhancing the continuity of power supply in the reclosing circuit breaker.

[0023] By installing a spring on the first bar, the spring compresses the first bar, causing it to abut against a limiting block. This allows the indicator bar to be displayed in the display hole, enabling operators to determine the opening and closing status of the reclosing circuit breaker. When the moving and stationary contacts separate, the moving contact moves the indicator bar via a linkage. Since the first bar is located at one end of the second bar and the third bar at the other end, they are positioned on different sides. This allows the third bar to abut against the limiting block, causing the indicator bar to move away from the installation spring and slide on the fixed block. This allows the third bar to be displayed in the display hole. At this time, the sliding of the indicator bar on the fixed block causes the installation spring to change from a compressed state to an extended state, making the state of the installation spring the same as that of the connecting spring. This makes the elastic fatigue of the installation spring similar to that of the connecting spring, allowing operators to determine the elastic fatigue of the connecting spring based on the elastic fatigue of the installation spring. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram highlighting the moving contact in the embodiments of this application; Figure 3This is a schematic diagram highlighting the connecting spring in the embodiments of this application; Figure 4 This is a schematic diagram of the structure highlighting the fixing block in the embodiments of this application; Figure 5 This is an exploded view of the highlighted display block in an embodiment of this application.

[0025] Reference numerals: 1. Housing; 11. Moving contact; 12. Stationary contact; 13. Connecting spring; 14. Linkage element; 141. Linkage bar; 142. Linkage block; 143. Moving hole; 144. Moving block; 145. First inclined surface; 146. Second inclined surface; 15. Display hole; 2. Fixing block; 21. Movable groove; 22. Receiving hole; 23. Reset element; 231. Reset magnet; 232. Indicating magnet; 24. Mounting spring; 241. Mounting block; 25. Limiting block; 251. Limiting inclined surface; 26. Receiving groove; 261. Display block; 262. Second magnet; 263. First magnet; 264. Display inclined surface; 3. Indicating bar; 31. First bar; 32. Second bar; 33. Third bar. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0027] This embodiment discloses a reclosing circuit breaker. (Refer to...) Figure 1 and Figure 2 A reclosing circuit breaker includes a housing 1, a moving contact 11 rotatably connected inside the housing 1, and a stationary contact 12 inside the housing 1. When the moving contact 11 and the stationary contact 12 abut against each other, the circuit is connected.

[0028] Reference Figure 2 and Figure 3 A connecting spring 13 is fixedly connected to the moving contact 11, and the connecting spring 13 drives the moving contact 11 to abut against the stationary contact 12. When the moving contact 11 abuts against the stationary contact 12, the mounting spring 24 is in a compressed state. When the moving contact 11 and the stationary contact 12 separate, the mounting spring 24 is in a stretched state.

[0029] Reference Figure 2 and Figure 4 A fixing block 2 is fixedly connected to the housing 1, and an indicator strip 3 is slidably connected to the fixing block 2. A linkage 14 is provided on the housing 1, and the linkage 14 is connected to the moving contact 11. When the moving contact 11 and the stationary contact 12 are separated, the moving contact 11 drives the indicator strip 3 to slide on the fixing block 2 through the linkage 14.

[0030] Reference Figure 2 and Figure 4The linkage component 14 includes a linkage bar 141 and a linkage block 142, with the linkage block 142 fixedly connected to the linkage bar 141. A movable hole 143 is formed on the surface of the linkage bar 141, and a movable block 144 is fixedly connected to the end face of the moving contact 11, with the movable block 144 inserted into the movable hole 143. When the moving contact 11 rotates, the movable block 144 drives the linkage bar 141 to move vertically through the wall of the movable hole 143.

[0031] Reference Figure 4 A movable groove 21 is formed on the surface of the fixed block 2, and the movable groove 21 is colored along the length of the housing 1. The indicator strip 3 slides within the movable groove 21. The indicator strip 3 includes a first strip 31, a second strip 32, and a third strip 33. The second strip 32 is integrally formed between the first strip 31 and the third strip 33. The first strip 31 is integrally formed on one end of the second strip 32, and the third strip 33 is integrally formed on the other end of the second strip 32. The colors of the first strip 31, the second strip 32, and the third strip 33 are all different.

[0032] Reference Figure 2 and Figure 4 The fixed block 2 has a receiving hole 22 that connects to the movable groove 21. The linkage block 142 is fixedly connected to one end of the linkage bar 141. A first inclined surface 145 is formed on the end face of the linkage block 142. The distance between the first inclined surface 145 and the moving contact 11 gradually decreases along the direction from the third bar 33 to the second bar 32. The first inclined surface 145 allows the indicator bar 3 to slide. A second inclined surface 146 is formed on the end face of the linkage bar 141. The distance between the second inclined surface 146 and the moving contact 11 gradually decreases along the direction from the linkage bar 141 to the linkage block 142. The second inclined surface 146 allows the indicator bar 3 to slide.

[0033] Reference Figure 4 When the linkage 14 moves from the receiving hole 22 into the movable groove 21, the linkage block 142 and the linkage bar 141 abut against the indicator bar 3, allowing the indicator bar 3 to move along the first inclined surface 145 and the second inclined surface 146 within the movable groove 21.

[0034] Reference Figure 4 and Figure 5 The movable groove 21 is equipped with a reset component 23, which includes a reset magnet 231 and an indicator magnet 232. The reset magnet 231 attracts the indicator magnet 232. The reset magnet 231 is fixedly connected to the groove wall of the movable groove 21, and the indicator magnet 232 is fixedly connected to one end of the indicator strip 3. When the linkage 14 is not inserted into the movable groove 21, the reset magnet 231 attracts the indicator magnet 232, causing the indicator strip 3 to reset.

[0035] Reference Figure 3 and Figure 5A mounting spring 24 is fixedly connected to the wall of the movable groove 21, and a mounting block 241 is fixedly connected to the other end of the mounting spring 24. The mounting block 241 is slidably connected to the surface of the first strip 31 facing the second strip 32. The elastic force of the mounting spring 24 is weaker than that of the connecting spring 13.

[0036] Reference Figure 2 and Figure 5 A limiting block 25 is fixedly connected to the groove wall of the movable groove 21 away from the mounting spring 24, and the limiting block 25 extends along the length direction of the housing 1. A limiting inclined surface 251 is formed on the surface of the limiting block 25 facing the mounting spring 24, and the limiting inclined surface 251 is located on the moving path of the indicator bar 3. Taking the state of separation of the moving contact 11 and the stationary contact 12 as a reference, the moving contact 11 drives the linkage bar 141 to rise. At this time, the distance between the limiting inclined surface 251 and the third bar 33 gradually increases along the direction from the linkage bar 141 to the indicator bar 3.

[0037] Reference Figure 3 and Figure 5 When the moving contact 11 abuts against the stationary contact 12, the linkage bar 141 and the linkage block 142 are located in the receiving hole 22, the mounting spring 24 abuts against the first bar 31, and the first bar 31 abuts against the limiting block 25. The mounting spring 24 is in a compressed state, and the connecting spring 13 is in a stretched state.

[0038] Reference Figure 3 and Figure 5 When the moving contact 11 and the stationary contact 12 separate, the moving contact 11 drives the linkage bar 141 to rise, so that the linkage bar 141 is located in the movable groove 21. The linkage bar 141 and the linkage block 142 drive the third bar 33 to move. The first bar 31 abuts against the limiting block 25 and then the third bar 33 abuts against the limiting block 25, so that the mounting spring 24 changes from a compressed state to a stretched state, and the connecting spring 13 is in a stretched state. When the moving contact 11 abuts against the stationary contact 12, the linkage bar 141 moves from the movable groove 21 to the receiving hole 22. At this time, the reset magnet 231 attracts the indicator magnet 232, so that the indicator bar 3 moves in the movable groove 21. That is, the second bar 32 and the first bar 31 can slide along the limiting inclined surface 251, so that the third bar 33 abuts against the limiting block 25 and then the first bar 31 abuts against the limiting block 25, so that the mounting spring 24 changes from a stretched state to a compressed state.

[0039] Reference Figure 1 and Figure 5The housing 1 has a display hole 15, which connects to the movable groove 21. The display hole 15 is used to display the first strip 31 and the third strip 33. The movable groove 21 has a receiving groove 26 on its wall, which is aligned with the display hole 15. A display block 261 is slidably connected in the receiving groove 26. The color of the display block 261 is different from the color of the first strip 31, the second strip 32, and the third strip 33.

[0040] Reference Figure 5 A second magnet 262 is fixedly connected to the bottom wall of the receiving groove 26, and a first magnet 263 is fixedly connected to the surface of the display block 261 facing the second magnet 262. The second magnet 262 repels the first magnet 263, and the magnetic force of the second magnet 262 on the first magnet 263 is less than the force exerted by the mounting spring 24 on the indicator strip 3.

[0041] Reference Figure 1 and Figure 5 A display slope 264 is provided on the end face of the display block 261 away from the second magnet 262. The distance between the display slope 264 and the display hole 15 gradually increases along the direction from the second strip 32 to the third strip 33. The moving path of the display slope 264 intersects the moving path of the indicator strip 3.

[0042] Reference Figure 1 and Figure 5 When the mounting spring 24 experiences elastic fatigue, the force exerted by the mounting spring 24 on the indicator strip 3 weakens. At this time, the second magnet 262 drives the display block 261 to move toward the display hole 15 through the first magnet 263, so that the display block 261 drives the indicator strip 3 to move through the display inclined surface 264, allowing the display block 261 to be exposed in the display hole 15, so that the staff can observe the display block 261 to know that the mounting spring 24 has experienced elastic fatigue.

[0043] Reference Figure 1 and Figure 5 When the moving contact 11 abuts against the stationary contact 12, the indicator bar 3 is located in the movable slot 21, and the first bar 31 is displayed in the display hole 15. When the moving contact 11 and the stationary contact 12 separate, the moving contact 11 drives the indicator bar 3 to move through the linkage 14, and the third bar 33 is displayed in the display hole 15.

[0044] The implementation principle of a reclosing circuit breaker according to an embodiment of this application is as follows: when the moving contact 11 and the stationary contact 12 are separated, the moving contact 11 drives the linkage bar 141 to rise, so that the linkage bar 141 drives the linkage block 142 to move, so that the linkage bar 141 and the linkage block 142 can realize the movement of the indicator bar 3, so that the first bar 31 abuts against the limiting block 25 and the third bar 33 abuts against the limiting block 25. At this time, the installation spring 24 moves to the stretched state.

[0045] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A reclosing circuit breaker, comprising a housing (1), a moving contact (11) rotatably connected to the housing (1), a stationary contact (12) provided on the housing (1), and a connecting spring (13) provided on the moving contact (11), the connecting spring (13) driving the moving contact (11) to abut against the stationary contact (12), characterized in that: The housing (1) is provided with a fixing block (2), and an indicator strip (3) is slidably connected to the fixing block (2). The housing (1) is provided with a display hole (15) for the indicator strip (3) to be exposed. The housing (1) is provided with a linkage (14), which is disposed on the moving contact (11). The fixing block (2) is provided with a mounting spring (24) for driving the indicator strip (3) to abut against the fixing block (2). The elastic force of the mounting spring (24) is weaker than that of the connecting spring (13). The elastic force; when the moving contact (11) abuts against the stationary contact (12), the mounting spring (24) and the connecting spring (13) are both in a compressed state; when the moving contact (11) and the stationary contact (12) separate, the linkage (14) drives the indicator bar (3) to slide on the housing (1), and the mounting spring (24) and the connecting spring (13) are both in a compressed state; when the mounting spring (24) experiences elastic fatigue, the indicator bar (3) is not in the display hole (15).

2. A reclosing circuit breaker according to claim 1, characterized in that: The indicator strip (3) includes a first strip (31), a second strip (32), and a third strip (33). The second strip (32) is disposed between the first strip (31) and the third strip (33). The first strip (31) is disposed at one end of the second strip (32), and the third strip (33) is disposed at the other end of the second strip (32). The second strip (32) is slidably connected to the fixing block (2). The mounting spring (24) is disposed on the first strip (31). The fixing block (2) has a movable groove (21) for the indicator strip (3) to move. The movable groove (21) contains a... There is a limiting block (25), and the movable groove (21) is provided with a reset member (23) for driving the indicator bar (3) to reset; when the moving contact (11) abuts against the stationary contact (12), the mounting spring (24) is in a compressed state, the first bar (31) abuts against the limiting block (25), and the first bar (31) is displayed in the display hole (15); when the moving contact (11) separates from the stationary contact (12), the mounting spring (24) is in a stretched state, the second bar (32) abuts against the limiting block (25), and the third bar (33) is displayed in the display hole (15).

3. A reclosing circuit breaker according to claim 2, characterized in that: A mounting block (241) is slidably connected to the first strip (31), and the mounting block (241) is disposed on the mounting spring (24).

4. A reclosing circuit breaker according to claim 2, characterized in that: The linkage component (14) includes a linkage bar (141), and a linkage block (142) is provided on the linkage bar (141). The linkage bar (141) and the linkage block (142) are both located on the moving path of the third bar (33). When the moving contact (11) and the stationary contact (12) are separated, the linkage bar (141) pushes the indicator bar (3) to slide on the fixed block (2), and the third bar (33) abuts against the limiting block (25).

5. A reclosing circuit breaker according to claim 2, characterized in that: The fixing block (2) is provided with a display block (261), which is located on the side of the indicator strip (3) away from the display hole (15). The color of the display block (261) is different from the color of the indicator strip (3).

6. A reclosing circuit breaker according to claim 5, characterized in that: The display block (261) is provided with a first magnet (263), and the fixing block (2) is provided with a second magnet (262). The second magnet (262) repels the first magnet. The repulsive force of the second magnet (262) on the first magnet (263) is less than the force of the mounting spring (24) on the indicator strip (3). When the elastic force of the mounting spring (24) is less than the repulsive force of the second magnet (262) on the first magnet (263) due to elastic fatigue, the display block (261) drives the indicator strip (3) to slide, and the display block (261) can display in the display hole (15).

7. A reclosing circuit breaker according to claim 6, characterized in that: The display block (261) has a display ramp (264), and the distance between the display ramp (264) and the display hole (15) gradually increases along the direction from the first strip (31) to the mounting spring (24). The moving path of the indicator strip (3) intersects with the moving path of the display ramp (264).

8. A reclosing circuit breaker according to claim 2, characterized in that: The limiting block (25) has a limiting slope (251) located on the moving path of the second strip (32); when the moving contact (11) and the stationary contact (12) separate, the distance between the limiting slope (251) and the third strip (33) gradually increases along the direction from the linkage (14) to the indicator strip (3).

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