Leakage protection device of circuit breaker

Abstract

The utility model provides a leakage protection device of a circuit breaker, which comprises an electromagnetic release, a magnetic ring and an electromagnetic plate which are arranged in the circuit breaker, and further comprises a transmission mechanism, the transmission mechanism comprises a reset rod pivoted on the circuit breaker shell, a second lock catch coaxially arranged with the reset rod, an electric leakage bracket pivoted on the circuit breaker shell and positioned on the upper side of the reset rod, and a second jump pin buckled and matched with the second lock catch and pivoted on the electric leakage bracket; one end of the second connecting rod is connected with the second jump pin, the other end of the second connecting rod is connected with a circuit breaker operating handle, one end of the reset rod abuts against an ejector pin of the electromagnetic tripper, and the other end of the reset rod extends towards the electric leakage support to form an abutting part; one side of the electric leakage support is provided with a first torsion spring connected to the circuit breaker shell, one end of the second lock catch abuts against the lower end of the first torsion spring, and the other end of the second lock catch is matched with the second jump pin in a buckling mode. The electric leakage tripping device is high in electric leakage tripping rate, high in safety and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a leakage protection device for circuit breakers. Background Art

[0002] The leakage protection circuit breaker has overload, short circuit and leakage protection functions, that is, it has the functions of a circuit breaker and a leakage protector. Therefore, the leakage protection circuit breaker is a commonly used protection device in electrical circuits, and is widely used in mobile electrical equipment and handheld power tools; electrical equipment installed in humid, highly corrosive and other harsh places; electrical construction machinery and equipment at construction sites; socket circuits in buildings such as schools, enterprises, and residences; underwater lighting equipment in swimming pools, fountains, and baths; power supply lines and equipment installed in water; electrical medical equipment in hospitals that directly contact the human body, etc.

[0003] In the prior art, the electronic type realizes leakage tripping by releasing a signal through the PCB board. The PCB board needs to be powered on. When the voltage is extremely low or the voltage is lost, the PCB board will not release the tripping signal, and the circuit breaker cannot complete the tripping, which poses a safety hazard. The existing application number is: 202322434494.1, and the patent name is a Chinese patent "An electromagnetic tripper with assisted tripping and reset functions", which discloses that "the end of the mounting plate (1) close to / away from the leakage tripper (5) is provided with a leakage reset component (4) for driving the rotating plate (2) to reset, and the leakage reset component (4) includes an auxiliary block (43) arranged on the first rotating part (22), a reset block (41) rotatably connected to the mounting plate (1) and a reset rod (42), and the reset block (41) is located at the first rotating part (22) away from the opening and closing mechanism (6) On one side, the auxiliary block (43) is located on the side of the first rotating part (22) facing the reset block (41), and the reset rod (42) is located on the side of the reset block (41) away from the hinge rod (32); the reset block (41) includes a push block (413) and a first tooth block (412) for driving the auxiliary block (43) to rotate toward the resistance arm (323), and the reset rod (42) includes a second tooth block (422), the first tooth block (412) and the second tooth block (422) are meshed with each other, and the end of the reset rod (42) away from the reset block (41) is in conflict with the opening and closing mechanism (6). "The transmission is achieved by the mutual meshing of the first tooth block (412) and the second tooth block (422), and the cooperation and swing between the two are prone to wear, resulting in a short service life. Utility Model Content

[0004] Based on the above problems, the purpose of the utility model is to provide a circuit breaker leakage protection device with high leakage tripping rate, high safety and long service life.

[0005] In view of the above problems, the following technical solutions are provided: a leakage protection device for a circuit breaker, comprising an electromagnetic release installed in the circuit breaker, a magnetic ring, and an electromagnetic plate electrically connected to the electromagnetic release and the magnetic ring, and also comprising a transmission mechanism, wherein the transmission mechanism comprises a reset rod pivotally connected to the circuit breaker housing, a second lock buckle coaxially arranged with the reset rod, a leakage bracket pivotally connected to the circuit breaker housing and located on the upper side of the reset rod, a second trip buckle engaged with the second lock buckle and pivotally connected to the leakage bracket, a trip rod linked to the leakage bracket, and a second connecting rod having one end connected to the second trip buckle and the other end connected to the circuit breaker operating handle, wherein one end of the reset rod abuts against the ejector pin of the electromagnetic release, and the other end extends toward the leakage bracket to form an abutment portion, and one side of the leakage bracket is provided with a connecting rod connected to the circuit breaker housing. The first torsion spring, one end of the second lock buckle abuts against the lower end of the first torsion spring, and the other end is buckled and matched with the second jump buckle, the other end of the first torsion spring abuts against the inner wall of the circuit breaker housing, the reset rod is provided with a first block on the side facing the circuit breaker housing cover, and the second lock buckle is provided with a second block on the side facing the circuit breaker housing cover at one end thereof cooperating with the second jump buckle, the second lock buckle is sleeved with a second torsion spring coaxially arranged therewith, the two ends of the second torsion spring abut against the first block and the lower part of the second block respectively, the second lock buckle is provided with a push block abutting and matching with the outer circle of the reset rod, the leakage bracket is provided with a third torsion spring coaxially arranged therewith, the end of the leakage bracket is provided with an open groove abutting and matching with the two ends of the third torsion spring, and the lower end of the third torsion spring extends downward to abut and match with the outer side of the abutting portion.

[0006] In the above structure, the utility model is installed in the circuit breaker, connected and coordinated with the operating handle of the operating device through the second connecting rod, and the trip rod is linked and coordinated with the first lock buckle of the operating device. In the closed state, when the magnetic ring senses the leakage, the ejector pin of the electromagnetic trip device pops out, pushing the reset rod to swing relative to the pivot point, and the second lock buckle, the second jump buckle and the leakage bracket are linked with the swing of the reset rod, the second lock buckle and the second jump buckle are tripped, the leakage bracket drives the second jump buckle to swing, drives the trip rod to move, the trip rod drives the first lock buckle to swing, the first lock buckle is tripped from the first jump buckle, the bracket drives the moving contact to move in the opposite direction relative to the static contact, the operating handle drives the first connecting rod through the first jump buckle, and the second jump buckle drives the second connecting rod to reset, thereby realizing the opening of the utility model; when the utility model is closed, the operating handle is controlled to move in the closing direction The operating handle controls the first trip button and the second trip button to swing through the first connecting rod and the second connecting rod, respectively, thereby driving the bracket and the leakage bracket to swing, and the bracket drives the moving contact to swing toward the static contact. When the operating handle swings to the closing position, the moving contact abuts against the static contact, and the first trip button swings through the first connecting rod to abut against the first lock button to achieve the limit of the first lock button and the bracket; the trip rod moves in the same direction relative to the closing direction of the operating handle as the leakage bracket swings, and the second lock button pushes the reset rod to swing through the push block to press the ejector pin of the electromagnetic release back into the electromagnetic release, thereby facilitating the leakage protection device to perform leakage protection and realize the closing of the utility model. The leakage protection of the utility model is realized by the electromagnetic release, which has high reliability, thereby improving the safety of the utility model; and the electromagnetic release is small in size, which can further reduce the overall size of the utility model. By setting the first torsion spring and the second torsion spring, the second lock catch can be limited, and the force of the second lock catch to drive the displacement of the reset rod can be increased, thereby improving the reliability of the reset rod controlling the reset of the electromagnetic release ejector pin. By setting the third torsion spring, the reset rod can be limited to avoid the reset rod from self-swinging, further improving the reliability of the utility model and improving the safety of the utility model. By setting the first abutment block, it is convenient for the reset rod to cooperate with the second torsion spring, thereby facilitating the ejector pin of the electromagnetic release to push the reset rod to swing, thereby improving the reliability of the utility model. By setting the second abutment block, it is convenient for the second lock catch to abut against the second torsion spring, thereby improving the reliability of the transmission mechanism. The distance from the end of the reset rod abutting against the electromagnetic release to the reset rod pivot point is greater than the distance from the abutment part to the reset rod pivot point, and the setting of the second torsion spring can make the reset rod swing by the electromagnetic release ejector pin ejecting a small force, thereby improving the reliability and safety of the utility model. The utility model realizes transmission release in a lever-type manner, and compared with the existing transmission through tooth blocks, the service life of the utility model is longer.

[0007] The utility model is further configured that a limiting block is provided on the side of the tripping rod facing the circuit breaker bracket and abuts against the side wall thereof.

[0008] In the above structure, the tripping rod pushes the first lock of the circuit breaker operating device to swing through the limit block, and the first lock is released from the first tripping position, thereby separating the moving contact from the static contact, and realizing the opening of the circuit breaker. When the operating handle is divided into a main handle and a sub-handle, the second connecting rod is connected and cooperated with the sub-handle, and when the leakage protection device is started, the sub-handle can drive the main handle to open and reset while opening and resetting the switch; in the case of overload or short circuit in the utility model, the overload protection device or the short circuit protection device starts to control the first lock to trip, and when the utility model is opened, the reset rod relative to the first lock is not limited to the other side of the limit block, and then the main handle is reset, and the sub-handle is not reset, so when the utility model is tripped, when the main handle and the sub-handle are reset together, it can be judged that leakage occurs, and the sub-handle is not reset. When the main handle is reset, the worker needs to further confirm the cause of the tripping, thereby improving the convenience of fault repair of the utility model.

[0009] The utility model is further configured that an insert block is provided at one end of the trip rod connected to the leakage support, and a socket matched with the insert block is provided on the leakage support.

[0010] In the above structure, the leakage bracket and the tripping rod are linked together through the insertion hole and the insertion block, which is convenient for positioning and installing the tripping rod and improves the convenience of assembly of the utility model.

[0011] The utility model is further configured that a clearance groove adapted to the end of the tripping rod is provided at a position on the leakage support relative to the insertion hole.

[0012] In the above structure, by providing the clearance groove, sufficient installation space for the tripping rod can be provided, thereby reducing the occupied space and correspondingly reducing the overall volume of the utility model.

[0013] The utility model is further configured that the inner corners of the clearance groove are chamfered.

[0014] The above structure can further facilitate the installation of the tripping rod, thereby improving the convenience of assembly of the utility model.

[0015] The utility model is further configured such that a protrusion at one end of the second lock buckle that abuts against the first torsion spring is provided with a limiting ridge.

[0016] In the above structure, the first torsion spring can be limited by providing the limiting ridge, thereby improving the stability of the first torsion spring and the reliability of the utility model.

[0017] The utility model is further configured that one end of the reset rod close to the electromagnetic release is tilted downwardly toward the electromagnetic release to form an extended end.

[0018] In the above structure, the extending end is provided to facilitate the matching with the electromagnetic release, thereby reducing the matching distance between the two, thereby improving the reliability of the utility model.

[0019] The utility model is further configured such that the width of the extending end is greater than the width of the reset rod.

[0020] The above structure can improve the stability of the cooperation between the electromagnetic release and the reset rod, thereby improving the reliability of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the main structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the structure of the utility model matching with the shell cover.

[0023] Figure 3 It is a schematic diagram of the structure of the utility model installed in the shell.

[0024] Figure 4 It is a schematic diagram of the structure of the utility model matched with the operating device.

[0025] Figure 5 It is a schematic diagram of the structure of the utility model located inside the shell cover.

[0026] Figure 6 It is a structural schematic diagram of the transmission mechanism in the utility model.

[0027] Figure 7 It is a structural schematic diagram of some parts of the transmission mechanism in the utility model.

[0028] Figure 8 It is a structural schematic diagram of the reset rod in the utility model.

[0029] Meaning of the numbers in the figure: 1-shell; 2-shell cover; 71-moving contact; 72-static contact; 9-operating device; 81-electromagnetic release; 82-magnetic ring; 83-electromagnetic plate; 84-transmission mechanism; 91-operating handle; 92-bracket; 93-first trip buckle; 94-first lock buckle; 95-first connecting rod; 841-reset rod; 842-second lock buckle; 843-leakage bracket; 844-second trip buckle; 845-trip rod; 8 46-second connecting rod; 8411-abutting part; 111-first torsion spring; 8412-first abutting block; 8421-second abutting block; 8422-second torsion spring; 8423-pushing block; 04-third torsion spring; 8431-opening groove; 8451-limiting block; 8424-limiting ridge; 911-main handle; 912-secondary handle; 8452-insertion block; 8432-insertion hole; 8433-clearance groove; 8413-extension end. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, backside...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] like Figures 1 to 7The leakage protection device of a circuit breaker shown in the figure comprises an electromagnetic release 81 installed in the circuit breaker, a magnetic ring 82 and an electromagnetic plate 83 electrically connected to the electromagnetic release 81 and the magnetic ring 82, and also comprises a transmission mechanism 84, wherein the transmission mechanism 84 comprises a reset rod 841 pivotally connected to the circuit breaker housing 1, a second lock 842 coaxially arranged with the reset rod 841, a leakage bracket 843 pivotally connected to the circuit breaker housing 1 and located on the upper side of the reset rod 841, and a second lock 842 engaged with the second lock 842. The second trip button 844 pivotally connected to the leakage bracket 843, the tripping rod 845 linked to the leakage bracket 843, and the second connecting rod 846 connected to the second trip button 844 at one end and the circuit breaker operating handle 91 at the other end, the reset rod 841 abuts against the ejector pin of the electromagnetic release 81 at one end, and extends toward the leakage bracket 843 at the other end to form an abutment portion 8411, and the leakage bracket 843 is provided with a first torsion spring 111 connected to the circuit breaker housing 1 on one side, and the second lock One end of the buckle 842 abuts against the lower end of the first torsion spring 111, and the other end is buckled with the second jump buckle 844. The other end of the first torsion spring 111 abuts against the inner wall of the circuit breaker housing 1. The reset rod 841 is provided with a first stop block 8412 on the side facing the circuit breaker housing cover 2. The second lock buckle 842 is provided with a second stop block 8421 on the side facing the circuit breaker housing cover 2 at one end cooperating with the second jump buckle 844. The second lock buckle 842 is sleeved with a second torsion spring 8422 coaxially arranged therewith. The two ends of the second torsion spring 8422 are respectively abutted against the first stop block 8412 and the second stop block 8421. The second lock buckle 842 is provided with a push block 8423 abutting against the outer circle of the reset rod 841. The leakage bracket 843 is provided with a third torsion spring 04 coaxially arranged therewith. The end of the leakage bracket 843 is provided with an open groove 431 abutting against the two ends of the third torsion spring 04. The lower end of the third torsion spring 04 extends downward to abut against the outer side of the abutting portion 8411.

[0033] In the above structure, the utility model is installed in the circuit breaker, connected and matched with the operating handle 91 of the operating device 9 through the second connecting rod 846, and the tripping rod 845 is linked and matched with the first lock 94 of the operating device 9. In the closed state, when the magnetic ring 82 senses the leakage, the ejector pin of the electromagnetic release 81 pops out, pushing the reset rod 841 to swing relative to the pivot point, and the second lock buckle 842, the second jump buckle 844 and the leakage bracket 843 are linked with the swing of the reset rod 841, the second lock buckle 842 and the second jump buckle 844 are released, the leakage bracket 843 drives the second jump buckle 844 to swing, drives the release rod 845 to move, the release rod 845 pushes the first lock buckle 94 to swing, the first lock buckle 94 is released from the first jump buckle 93, the bracket 92 drives the moving contact 71 to move in the opposite direction relative to the static contact 72, the operating handle 91 drives the first connecting rod 95 through the first jump buckle 93, and the second jump buckle 844 drives the second connecting rod 846 to reset, thereby realizing the opening of the utility model; when the utility model is closed, the operating handle 91 is controlled to close the switch The operating handle 91 controls the first trip button 93 and the second trip button 844 to swing through the first connecting rod 95 and the second connecting rod 846, thereby driving the bracket 92 and the leakage bracket 843 to swing, and the bracket 92 drives the moving contact 71 to swing toward the static contact 72. When the operating handle 91 is swung to the closing position, the moving contact 71 abuts against the static contact 72, and the first trip button 93 is swung to abut against the first lock button 94 through the first connecting rod 95 to achieve the limitation of the first lock button 94 and the bracket 92; the tripping rod 845 is displaced in the same direction relative to the closing direction of the operating handle 91 as the leakage bracket 843 swings, and the second lock button 842 pushes the reset rod 841 through the push block 8423 to swing to press the ejector pin of the electromagnetic release 81 back into the electromagnetic release 81, thereby facilitating the leakage protection device to perform leakage protection and realize the closing of the utility model. The leakage protection of the utility model is realized by the electromagnetic release 81, which has high reliability, thereby improving the safety of the utility model; and the electromagnetic release 81 is small in size, which can further reduce the overall volume of the utility model. By setting the first torsion spring 111 and the second torsion spring 8422, the second lock buckle 842 can be limited, and the force of the second lock buckle 842 to drive the reset rod 841 to move can be increased, thereby improving the reliability of the reset rod 841 controlling the reset of the electromagnetic release 81 ejector pin. By setting the third torsion spring 04, the reset rod 841 can be limited to avoid the reset rod 841 from self-swinging, further improving the reliability of the utility model and improving the safety of the utility model. By setting the first stop block 8412, it is convenient for the reset rod 841 to cooperate with the second torsion spring 8422, thereby facilitating the ejector pin of the electromagnetic release 81 to push the reset rod 841 to swing, thereby improving the reliability of the utility model. The second abutment block 8421 can facilitate the abutment and cooperation between the second lock buckle 842 and the second torsion spring 8422 , thereby improving the reliability of the transmission mechanism 84 .The distance from the end of the reset rod 841 abutting against the electromagnetic release 81 to the pivot point of the reset rod 841 is greater than the distance from the abutment portion 8411 to the pivot point of the reset rod 841, and the arrangement of the second torsion spring 8422 enables the reset rod 841 to swing by being driven by a relatively small force from the electromagnetic release ejector pin, thereby improving the reliability and safety of the utility model. The utility model realizes transmission release by lever-type means, and has a longer service life than the existing transmission by tooth blocks.

[0034] In this embodiment, a limiting block 8451 is provided on the side of the tripping rod 845 facing the circuit breaker bracket 92 and abuts against the side wall thereof.

[0035] In the above structure, the trip rod 845 pushes the first lock 94 of the circuit breaker operating device 9 to swing through the limit block 8451, and the first lock 94 is released from the first tripping buckle 93, thereby separating the moving contact 71 from the static contact 72, thereby realizing the opening of the circuit breaker. When the operating handle 91 is divided into a main handle 911 and an auxiliary handle 912, the second connecting rod 846 is connected and cooperated with the auxiliary handle 912, so that when the leakage protection device is started, the auxiliary handle 912 can open and reset the switch and drive the main handle 911 to open and reset the switch; in the event of an overload or short circuit in the utility model, the overload protection device or the short circuit protection device starts to control the first lock buckle 94 to disengage, and when the utility model is opened, the first lock buckle 94 is not limited on the other side of the reset rod 841 relative to the first lock buckle 94 toward the limit block 8451, and then the main handle 911 is reset, and the auxiliary handle 912 is not reset. Therefore, when the utility model trips, when the main handle 911 and the auxiliary handle 912 are reset together, it can be judged that a leakage occurs, and the auxiliary handle 912 is not reset. When the main handle 911 is reset, the worker needs to further confirm the cause of the tripping, thereby improving the convenience of fault repair of the utility model.

[0036] In this embodiment, an insert block 8452 is provided at one end of the trip rod 845 connected to the leakage bracket 843 , and a plug hole 8432 matching with the insert block 8452 is provided on the leakage bracket 843 .

[0037] In the above structure, the leakage bracket 843 and the tripping rod 845 are linked together through the insertion hole 8432 and the plug block 8452, which is convenient for positioning and installing the tripping rod 845 and improves the convenience of assembly of the utility model.

[0038] In this embodiment, a clearance groove 8433 adapted to the end of the tripping rod 845 is provided on the leakage bracket 843 at a position relative to the insertion hole 8432 .

[0039] In the above structure, by providing the clearance groove 8433, sufficient installation space can be provided for the tripping rod 845, thereby reducing the occupied space and correspondingly reducing the overall volume of the utility model.

[0040] In this embodiment, the inner corner of the clearance groove 8433 is provided with a chamfered arc.

[0041] The above structure can further facilitate the installation of the tripping rod 845, thereby improving the convenience of assembly of the utility model.

[0042] In this embodiment, a protrusion at one end of the second lock buckle 842 that abuts against the first torsion spring 111 is provided with a limiting ridge 8424 .

[0043] In the above structure, the first torsion spring 111 can be limited by providing the limiting ridge 8424, thereby improving the stability of the first torsion spring 111 and improving the reliability of the utility model.

[0044] In this embodiment, one end of the reset rod 841 close to the electromagnetic release 81 is tilted downward toward the electromagnetic release 81 to form an extended end 8413 .

[0045] In the above structure, the extending end 8413 is provided to facilitate the matching with the electromagnetic release 81, thereby reducing the matching distance between the two, thereby improving the reliability of the utility model.

[0046] In this embodiment, the width of the extending end 8413 is greater than the width of the reset rod 841 .

[0047] The above structure can improve the stability of the cooperation between the electromagnetic release 81 and the reset rod 841, thereby improving the reliability of the utility model.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A leakage protection device for a circuit breaker, comprising an electromagnetic release installed in the circuit breaker, a magnetic ring, and an electromagnetic plate electrically connected to the electromagnetic release and the magnetic ring, characterized in that: The breaker also includes a transmission mechanism, which includes a reset rod pivoted on the circuit breaker housing, a second lock buckle coaxially arranged with the reset rod, a leakage bracket pivoted on the circuit breaker housing and located on the upper side of the reset rod, a second trip buckle that is buckled with the second lock buckle and pivoted on the leakage bracket, a trip rod linked to the leakage bracket, and a second connecting rod connected to the second trip buckle at one end and connected to the circuit breaker operating handle at the other end. One end of the reset rod abuts against the ejector pin of the electromagnetic release, and the other end extends toward the leakage bracket to form an abutment portion. One side of the leakage bracket is provided with a first torsion spring connected to the circuit breaker housing, one end of the second lock buckle abuts against the lower end of the first torsion spring, and the other end is buckled with the second trip buckle. The other end of the first torsion spring abuts against the inner wall of the circuit breaker housing, the reset rod is provided with a first block on the side facing the circuit breaker housing cover, the end of the second lock buckle that cooperates with the second jump buckle is provided with a second block on the side facing the circuit breaker housing cover, the second lock buckle is sleeved with a second torsion spring coaxially arranged therewith, the two ends of the second torsion spring abut against the first block and the lower part of the second block respectively, the second lock buckle is provided with a push block abutting and cooperating with the outer circle of the reset rod, the leakage bracket is provided with a third torsion spring coaxially arranged therewith, the end of the leakage bracket is provided with an open groove abutting and cooperating with the two ends of the third torsion spring, and the lower end of the third torsion spring extends downward to abut and cooperate with the outer side of the abutting portion.

2. The leakage protection device for a circuit breaker according to claim 1, characterized in that: A limiting block abutting and cooperating with the side wall of the tripping rod is provided on one side of the tripping rod facing the circuit breaker bracket.

3. The leakage protection device for a circuit breaker according to claim 2, characterized in that: An insert block is arranged at one end of the trip rod connected to the leakage support, and a plug hole matching with the insert block is arranged on the leakage support.

4. The leakage protection device for a circuit breaker according to claim 3, characterized in that: A clearance groove matched with the end of the tripping rod is provided at a position on the leakage bracket relative to the insertion hole.

5. The leakage protection device for a circuit breaker according to claim 4, characterized in that: The inner corners of the clearance groove are provided with chamfered arcs.

6. The leakage protection device for a circuit breaker according to claim 1, characterized in that: A protrusion at one end of the second lock buckle that abuts against the first torsion spring is provided with a limiting ridge.

7. The leakage protection device for a circuit breaker according to claim 1, characterized in that: The end of the reset rod close to the electromagnetic release is tilted downwardly toward the electromagnetic release to form an extended end.

8. The leakage protection device for a circuit breaker according to claim 7, characterized in that: The width of the extending end is greater than the width of the reset rod.

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