Intelligent miniature circuit breaker transmission mechanism and intelligent miniature circuit breaker

Abstract

The utility model discloses an intelligent miniature circuit breaker transmission mechanism, comprising a button mechanism and an electric mechanism, the electric mechanism comprises a motor, an intermediate transmission gear set, an incomplete gear execution member, an inner handle and a torsion spring; the intermediate transmission gear set is mounted between the motor and the incomplete gear execution part; the incomplete gear execution part is rotationally mounted on a mounting shaft preset in the circuit breaker shell; the inner handle is placed on the incomplete gear execution piece in an overlapped mode and rotationally arranged outside the mounting shaft in a sleeving mode, the inner handle is connected with the button mechanism through a long pull rod and can be driven by the button mechanism to rotate, and the inner handle is further linked with the circuit breaker operating mechanism through a short pull rod and can make the circuit breaker operating mechanism open and close; the torsional spring is mounted in a preset groove in the inner handle; the intelligent miniature circuit breaker comprises the transmission mechanism. The utility model has the advantages of compact structure, simple installation, stable and reliable action, long service life, high integration and small occupied space, and meets the requirements of the communication cabinet on current and space.

Description

Technical Field

[0001] The utility model belongs to the field of electrical equipment technology, and in particular relates to an intelligent miniature circuit breaker transmission mechanism and an intelligent miniature circuit breaker. Background Art

[0002] Currently, there are no 250A framed miniature plug-in circuit breakers for the power distribution industry. In practice, two 125A circuit breakers are used in parallel. This presents the following issues: During closing, opening, and tripping, the two-pole circuit breaker contacts can easily become asynchronous, causing the current in one pole to exceed the rated current, impacting its lifespan and potentially burning the contacts. Furthermore, the circuit resistance of the two poles cannot be guaranteed to be equal, causing the current in one of the two parallel poles to exceed the rated current, resulting in an unqualified temperature rise. Furthermore, the use of two-pole parallel connection is inconsistent with the trend toward integration and occupies a large amount of space in 5G communication cabinets. Due to these shortcomings, existing miniature plug-in circuit breakers cannot meet the service life, integration, and space requirements of 5G communication cabinets. Therefore, there is an urgent need to design a miniature plug-in circuit breaker with a 250A frame specifically designed to meet 5G requirements. Utility Model Content

[0003] In order to solve the above problems, the purpose of the present utility model is to provide an intelligent miniature circuit breaker transmission mechanism and an intelligent miniature circuit breaker that can switch on and off 250A frame current and meet the service life, integration and space requirements of 5G communication cabinets.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] An intelligent miniature circuit breaker transmission mechanism, for driving a circuit breaker operating mechanism to open and close, comprises a push button mechanism and an electric mechanism mounted within the circuit breaker housing. The electric mechanism comprises a motor, an intermediate transmission gear set, an incomplete gear actuator, and an inner handle. The intermediate transmission gear set is mounted between the motor and the incomplete gear actuator and is configured to transmit the motor's driving force to the incomplete gear actuator, causing it to rotate. The incomplete gear actuator is rotatably mounted on a predetermined mounting shaft within the circuit breaker housing and is capable of opening and closing the circuit breaker operating mechanism by rotation. The inner handle is superimposed on the incomplete gear actuator and rotatably sleeved outside the mounting shaft. The inner handle is connected to the push button mechanism via a long pull rod and is capable of rotating under the push button mechanism's drive. The inner handle is also linked to the circuit breaker operating mechanism via a short pull rod and is capable of opening and closing the circuit breaker operating mechanism. The inner handle can close the circuit breaker operating mechanism under the drive of the incomplete gear actuator and, when the incomplete gear actuator drives the circuit breaker operating mechanism to open, is driven by the incomplete gear actuator to push the push button mechanism to the open position.

[0006] Furthermore, when the inner handle is driven by the button mechanism to open or close the circuit breaker operating mechanism, the incomplete gear actuator does not rotate.

[0007] Furthermore, gear teeth are evenly distributed on three-quarters of the outer circumference of the incomplete gear actuator, and the incomplete gear actuator cooperates with the intermediate transmission gear set through the gear teeth on its outer side; a rib is provided on the circumference of the outer side of the incomplete gear actuator where no gear teeth are distributed, and a flange is correspondingly provided on the locking part of the circuit breaker operating mechanism. When the incomplete gear actuator rotates, the rib 1 collides with the flange, causing the circuit breaker operating mechanism to trip and open.

[0008] Furthermore, the outer side of the inner handle is concave to form a V-shaped air avoidance groove; a second rib is provided on the surface of the incomplete gear actuator facing the inner handle, and the second rib is just located in the V-shaped air avoidance groove. The second rib can move in the V-shaped air avoidance groove as the incomplete gear actuator rotates and push the inner handle to rotate; the first rib is located between the flange and the second rib.

[0009] Furthermore, in order to ensure the sensitivity of the automatic tripping action and reduce the obstruction of the inner handle to the tripping and opening action, a clearance groove is provided on the surface of the inner handle facing the incomplete gear actuator. The clearance groove is arranged close to the flange and is connected to the V-shaped air avoidance groove. When the incomplete gear actuator rotates toward the flange, the rib 2 first enters the clearance groove. After the rib 1 collides with the flange and causes the circuit breaker operating mechanism to trip and open, the rib 2 collides with the end of the clearance groove and pushes the inner handle to rotate.

[0010] Furthermore, the intermediate transmission gear set includes a worm fixed on the motor drive shaft and three groups of double-layer gears, the three groups of double-layer gears are double-layer gear one, double-layer gear two and double-layer gear three; the lower layer of double-layer gear one is a turbine that cooperates with the worm, the upper layer gear of double-layer gear one is meshed with the upper layer gear of double-layer gear two; the lower layer gear of double-layer gear two is meshed with the lower layer gear of double-layer gear three; the upper layer gear of double-layer gear three is meshed with the incomplete gear actuator.

[0011] An intelligent miniature circuit breaker comprises the above-mentioned intelligent miniature circuit breaker transmission mechanism.

[0012] Furthermore, the intelligent miniature circuit breaker further includes a control circuit board installed in the circuit breaker housing, the control circuit board is electrically connected to the motor, and is provided with a forward and reverse control circuit for controlling the forward and reverse rotation of the motor.

[0013] Furthermore, a rib three is provided on the surface of the incomplete gear actuator facing away from the inner handle, which is located on the rear side of the rib one; a micro switch one and a micro switch two are provided on the control circuit board at the position corresponding to the rib three; the micro switch one is arranged close to the circuit breaker operating mechanism, and can be toggled by the rib three to light up the opening indicator light; the micro switch two is arranged away from the circuit breaker operating mechanism, and can be toggled by the rib three to light up the closing indicator light; after the circuit breaker is energized, the rib three rotates with the incomplete gear actuator to between the micro switch one and the micro switch two, and is in the initial position; after the circuit breaker is authorized, when the circuit breaker is automatically opened, the rib three rotates with the incomplete gear actuator from the initial position toward the direction close to the flange under the drive of the motor. During the rotation, the micro switch one is toggled, and the opening indicator light is on; after the circuit breaker is authorized, when the circuit breaker is automatically closed, the rib three rotates with the incomplete gear actuator from the initial position toward the direction away from the flange under the drive of the motor. During the rotation, the micro switch two is toggled, and the closing indicator light is on.

[0014] The utility model has the advantages of compact structure, simple installation, stable and reliable operation, long service life, high integration, small space occupation, and meets the current and space requirements of communication cabinets. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The structure of the present invention will be described in further detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a structural diagram of the intelligent miniature circuit breaker described in the utility model.

[0017] Figure 2 This is a structural diagram of the intelligent miniature circuit breaker of the utility model when the incomplete gear actuator is in the initial position.

[0018] Figure 3 This is a structural diagram of the intelligent miniature circuit breaker of the present invention when the incomplete gear actuator is in the opening position.

[0019] Figure 4 This is a structural diagram of the intelligent miniature circuit breaker of the present invention when the incomplete gear actuator is in the closed position.

[0020] Figure 5 This is a diagram of the installation positions of the incomplete gear actuator, inner handle and torsion spring in the intelligent miniature circuit breaker described in the utility model.

[0021] Figure 6 This is a positional relationship diagram of the incomplete gear actuator, the inner handle, and the circuit breaker operating structure in the intelligent miniature circuit breaker described in the utility model.

[0022] Figure 7 This is a schematic structural diagram of the inner handle in the intelligent miniature circuit breaker of the utility model.

[0023] Figure 8 This is a structural diagram of the incomplete gear actuator in the intelligent miniature circuit breaker of the utility model.

[0024] As shown in the figure: 1-button structure, 2-intelligent miniature circuit breaker transmission mechanism, 21-motor, 22-intermediate transmission gear set, 23-incomplete gear actuator, 231-convex rib one, 232-convex rib two, 233-convex rib three, 24-inner handle, 241-V-shaped air avoidance groove, 242-yield groove, 25-torsion spring, 3-circuit breaker operating mechanism, 31-locking piece, 311-flange, 4-circuit breaker housing, 5-control circuit board, 6-long pull rod, 7-short pull rod. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The embodiments described are merely a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0026] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of this utility model. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose of the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of this utility model without substantially changing the technical content.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. It should be noted that the terms "include", "comprise" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. Example

[0028] like Figure 1-8 The embodiment shown provides an intelligent miniature circuit breaker, which includes a circuit breaker housing 4, a circuit breaker operating mechanism 3, an intelligent miniature circuit breaker transmission mechanism 2 for driving the circuit breaker operating mechanism 3 to open and close the circuit, and a control circuit board 5 mounted within the circuit breaker housing 4. The circuit breaker operating mechanism 3 and the circuit breaker housing 4 are conventional components of a circuit breaker and have a conventional structure. The circuit breaker operating mechanism 3 generally comprises a contact bracket rotatably mounted on a pre-set main shaft within the circuit breaker housing 3, a tripping latch rotatably connected to the upper side of the contact bracket, a locking member 31 rotatably mounted on the main shaft and latched with the tripping latch, and a movable contact rotatably connected to the lower side of the contact bracket.

[0029] The intelligent miniature circuit breaker transmission mechanism includes a button mechanism 1 and a motor mechanism, both mounted within the circuit breaker housing 4. The button mechanism 1 is a conventional circuit breaker component and is slidably mounted within the circuit breaker housing 4. The motor mechanism includes a motor 21, an intermediate transmission gear set 22, a partial gear actuator 23, and an inner handle 24.

[0030] The intermediate transmission gear set 22 is installed between the motor 21 and the incomplete gear actuator 23, and is used to transmit the driving force of the motor 21 to the incomplete gear actuator 23, so that the incomplete gear actuator 23 rotates; the intermediate transmission gear set 22 includes a worm fixed on the driving shaft of the motor 21 and three groups of double-layer gears, and the three groups of double-layer gears are double-layer gear one, double-layer gear two and double-layer gear three; the lower layer of double-layer gear one is a turbine that cooperates with the worm, and the upper layer gear of double-layer gear one is meshed with the upper layer gear of double-layer gear two; the lower layer gear of double-layer gear two is meshed with the lower layer gear of double-layer gear three; the upper layer gear of double-layer gear three is meshed with the incomplete gear actuator 23.

[0031] like Figure 5As shown, the incomplete gear actuator 23 is rotatably mounted on a preset mounting shaft in the circuit breaker housing 4 and can open and close the circuit breaker operating mechanism 3 by rotating; the incomplete gear actuator 23 is a circular flat plate, as shown Figure 8 As shown, gear teeth are evenly distributed on the outer three-quarters of the circumference of the incomplete gear actuator 23. The incomplete gear actuator 23 is in transmission cooperation with the intermediate transmission gear set 22 (engaged with the upper gear of the double-layer gear three) through the gear teeth on the outer side of the incomplete gear actuator 23; a rib 1 231 is provided on the circumference of the outer side of the incomplete gear actuator 23 where gear teeth are not distributed; Figure 6 As shown, a corresponding flange 311 is provided on the locking member 31 of the circuit breaker operating mechanism 3. The partially geared actuator 23 rotates, causing rib 1 231 to collide with the flange 311. This causes the locking member 31 to rotate and disengage from the tripping latch, tripping the circuit breaker operating mechanism 3. Rib 3 233 is provided on the surface of the partially geared actuator 23 facing away from the inner handle 24, located behind rib 1 231.

[0032] like Figure 5 and Figure 7 As shown, the inner handle 24 is placed on top of the incomplete gear actuator 23 and is rotatably sleeved outside the mounting shaft, as shown in FIG. Figure 1 As shown, the inner handle 24 is connected to the button mechanism 1 through a long pull rod 6 and can rotate under the drive of the button mechanism 1. The inner handle 24 is also connected to the tripping latch of the circuit breaker operating mechanism 3 through a short pull rod 7 and can open and close the circuit breaker operating mechanism 3; the inner handle 24 can close the circuit breaker operating mechanism 3 under the drive of the incomplete gear actuator 23, and at the same time, when the incomplete gear actuator 23 drives the circuit breaker operating mechanism 3 to open, the inner handle 24 is driven by the incomplete gear actuator 23 and pushes the button mechanism 1 to move to the open position; when the inner handle 24 is driven by the button mechanism 1 to open and close the circuit breaker operating mechanism 3, the incomplete gear actuator 23 does not rotate.

[0033] In addition, a torsion spring 25 can be provided, which is installed in a preset groove on the inner handle 24. One end of the torsion spring 25 (one of the torsion arms) is clamped on the inner handle, and the other end (the other torsion arm) is clamped on the circuit breaker housing 4.

[0034] In addition, the outer side of the inner handle 24 is concave to form a V-shaped air avoidance groove 241; a second rib 232 is provided on the surface of the incomplete gear actuator 23 facing the inner handle 24, and the second rib 232 is just located in the V-shaped air avoidance groove 241. The second rib 232 can move in the V-shaped air avoidance groove 241 as the incomplete gear actuator 23 rotates and push the inner handle 24 to rotate; the first rib 231 is located between the flange 311 and the second rib 232.

[0035] In order to ensure the sensitivity of the automatic tripping action and reduce the obstruction of the inner handle 24 to the tripping and opening action, a clearance groove 242 is provided on the surface of the inner handle 24 facing the incomplete gear actuator 23. The clearance groove 242 is arranged close to the flange 311 and is connected to the V-shaped avoidance groove 241. When the rib 232 rotates toward the flange 311 as the incomplete gear actuator 23 rotates, the rib 232 first enters the clearance groove 242. After the rib 1 231 collides with the flange 311 and causes the circuit breaker operating mechanism 3 to trip and open, the rib 232 collides with the end of the clearance groove 242 and pushes the inner handle 24 to rotate.

[0036] The control circuit board 5 is electrically connected to the motor 21. A micro switch 1 51 and a micro switch 2 52 are provided on the control circuit board 5 at positions corresponding to the rib 3 233. The micro switch 1 51 is arranged near the circuit breaker operating mechanism 3 and can be toggled by the rib 3 233 to illuminate the opening indicator light. The micro switch 2 52 is arranged away from the circuit breaker operating mechanism 3 and can be toggled by the rib 3 233 to illuminate the closing indicator light. After the circuit breaker is energized, the rib 3 233 rotates with the incomplete gear actuator 23 to between the micro switch 1 51 and the micro switch 2 52, and is in the initial position. After the circuit breaker is authorized to automatically open, the rib 3 233 rotates with the incomplete gear actuator 23 from the initial position toward the direction close to the flange 311 under the drive of the motor 21. During the rotation, the micro switch 1 51 is toggled, and the opening indicator light is illuminated. After the circuit breaker is authorized, when it automatically closes, driven by the motor 21, the rib 3 233 rotates from the initial position toward the direction away from the flange 311 along with the incomplete gear actuator. During the rotation, the micro switch 2 52 is toggled and the closing indicator light turns on.

[0037] How it works

[0038] (1) Manual opening and closing:

[0039] When the circuit breaker is powered on, the control circuit board 5 controls the motor 21 to drive the incomplete gear actuator 23 to rotate to Figure 3 In the position shown, the incomplete gear actuator 23 rotates to the trip lock 31 (the rotation of the incomplete gear actuator 23 causes the rib 1 231 on it to collide with the flange 311 of the lock 31 of the circuit breaker operating mechanism 3, and the lock 31 rotates and disengages from the trip button, causing the circuit breaker operating mechanism 3 to trip and open. At the same time, the rib 232 continues to rotate counterclockwise with the incomplete gear actuator 23 and pushes the inner handle 24 to rotate counterclockwise, pushing the button mechanism 1 to slide out of the circuit breaker housing 4). The circuit breaker is in the tripped and opened state (initialization). When the circuit breaker is authorized, the control circuit board 5 controls the motor 21 to drive the incomplete gear actuator 23 to rotate to Figure 2As shown in the position, the convex rib 232 and the convex rib 3 233 are both rotated to the position between the micro switch 1 51 and the micro switch 2 52, and then the button mechanism 1 can be pressed to manually open and close the switch.

[0040] (2) Electric opening and closing:

[0041] When the circuit breaker is powered on, the control circuit board controls the motor 21 to drive the incomplete gear actuator 23 to rotate to Figure 3 In the position shown, the incomplete gear actuator 23 rotates to the trip lock 31 (the rotation of the incomplete gear actuator 23 causes the rib 1 231 on it to collide with the flange 311 of the lock 31 of the circuit breaker operating mechanism 3, and the lock 31 rotates and disengages from the trip button, causing the circuit breaker operating mechanism 3 to trip and open. At the same time, the rib 232 continues to rotate counterclockwise with the incomplete gear actuator 23 and pushes the inner handle 24 to rotate counterclockwise, pushing the button mechanism 1 to slide out of the circuit breaker housing 4). The circuit breaker is in the tripped and opened state (initialization). When the circuit breaker is authorized, the control circuit board 5 controls the motor 21 to drive the incomplete gear actuator 23 to rotate to Figure 2 As shown in the position, the rib 232 and the rib 3 233 are both rotated to the position between the micro switch 1 51 and the micro switch 2 52, and then the motor 21 drives the incomplete gear actuator 23 to Figure 4 The position shown is closed or the incomplete gear actuator 23 can be rotated to Figure 3 The shown position is open.

[0042] Other aspects of the present invention that are not described in detail are all conventional technologies known to those skilled in the art.

[0043] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0044] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An intelligent miniature circuit breaker transmission mechanism, used to drive the circuit breaker operating mechanism to open and close the circuit, comprising a button mechanism and an electric mechanism installed in the circuit breaker housing, characterized in that: The electric mechanism includes a motor, an intermediate transmission gear set, an incomplete gear actuator and an inner handle; The intermediate transmission gear set is installed between the motor and the incomplete gear actuator, and is used to transmit the driving force of the motor to the incomplete gear actuator, so that the incomplete gear actuator rotates; The incomplete gear actuator is rotatably mounted on a preset mounting shaft in the circuit breaker housing and can open and close the circuit breaker operating mechanism by rotating; The inner handle is overlapped and placed on the incomplete gear actuator and is rotatably sleeved outside the mounting shaft. The inner handle is connected to the button mechanism through a long pull rod and can be rotated under the drive of the button mechanism. The inner handle is also linked to the circuit breaker operating mechanism through a short pull rod and can open and close the circuit breaker operating mechanism; the inner handle can close the circuit breaker operating mechanism under the drive of the incomplete gear actuator, and at the same time, when the incomplete gear actuator drives the circuit breaker operating mechanism to open, the inner handle can be driven by the incomplete gear actuator and push the button mechanism to move to the opening position.

2. The intelligent miniature circuit breaker transmission mechanism according to claim 1, characterized in that: When the inner handle is driven by the button mechanism to open and close the circuit breaker operating mechanism, the incomplete gear actuator does not rotate.

3. The intelligent miniature circuit breaker transmission mechanism according to claim 2, characterized in that: Gear teeth are evenly distributed on three-quarters of the outer circumference of the incomplete gear actuator, and the incomplete gear actuator cooperates with the intermediate transmission gear set through the gear teeth on its outer side; a convex rib is provided on the circumference of the outer side of the incomplete gear actuator where no gear teeth are arranged, and a flange is correspondingly provided on the locking part of the circuit breaker operating mechanism. When the incomplete gear actuator rotates, the convex rib 1 collides with the flange, causing the circuit breaker operating mechanism to trip and open.

4. The intelligent miniature circuit breaker transmission mechanism according to claim 3, characterized in that: The outer side of the inner handle is concave to form a V-shaped air avoidance groove; a second rib is provided on the surface of the incomplete gear actuator facing the inner handle, and the second rib is just located in the V-shaped air avoidance groove. The second rib can move in the V-shaped air avoidance groove as the incomplete gear actuator rotates and push the inner handle to rotate; the first rib is located between the flange and the second rib.

5. The intelligent miniature circuit breaker transmission mechanism according to claim 4, characterized in that: A clearance groove is provided on the surface of the inner handle facing the incomplete gear actuator. The clearance groove is arranged close to the flange and is connected to the V-shaped avoidance groove. When the incomplete gear actuator rotates toward the flange, the second rib first enters the clearance groove. After the first rib collides with the flange and causes the circuit breaker operating mechanism to trip and open, the second rib collides with the end of the clearance groove and pushes the inner handle to rotate.

6. The intelligent miniature circuit breaker transmission mechanism according to claim 3, characterized in that: The intermediate transmission gear set includes a worm fixed on the motor drive shaft and three groups of double-layer gears, the three groups of double-layer gears are double-layer gear one, double-layer gear two and double-layer gear three; the lower layer of double-layer gear one is a turbine that cooperates with the worm, the upper layer gear of double-layer gear one is meshed with the upper layer gear of double-layer gear two; the lower layer gear of double-layer gear two is meshed with the lower layer gear of double-layer gear three; the upper layer gear of double-layer gear three is meshed with the incomplete gear actuator.

7. An intelligent miniature circuit breaker, characterized in that: The intelligent miniature circuit breaker transmission mechanism comprises the intelligent miniature circuit breaker transmission mechanism according to any one of claims 1 to 6.

8. The intelligent miniature circuit breaker according to claim 7, characterized in that: The circuit board is also provided with a control circuit board installed in the circuit breaker housing. The control circuit board is electrically connected to the motor and is provided with a forward and reverse control circuit for controlling the forward and reverse rotation of the motor.

9. The intelligent miniature circuit breaker according to claim 8, characterized in that: A convex rib 3 is provided on the surface of the incomplete gear actuator facing away from the inner handle and located behind the convex rib 1; a micro switch 1 and a micro switch 2 are provided on the control circuit board at positions corresponding to the convex rib 3; the micro switch 1 is provided near the circuit breaker operating mechanism and can be toggled by the convex rib 3 to illuminate the opening indicator light; the micro switch 2 is provided away from the circuit breaker operating mechanism and can be toggled by the convex rib 3 to illuminate the closing indicator light; After the circuit breaker is powered on, driven by the motor, the rib 3 rotates along with the incomplete gear actuator to the position between the micro switch 1 and the micro switch 2, and is in the initial position; After the circuit breaker is authorized, when it automatically opens, the motor drives the rib three to rotate along with the incomplete gear actuator from the initial position toward the flange. During the rotation, the micro switch one is turned on and the opening indicator light turns on. After the circuit breaker is authorized, when it automatically closes, driven by the motor, the rib three rotates from the initial position toward the direction away from the flange along with the incomplete gear actuator. During the rotation, the micro switch two is turned and the closing indicator light is on.

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