阅读说明：本技术 一种电磁式漏电断路器 (Electromagnetic leakage circuit breaker ) 是由 张宇豪 于 2020-12-28 设计创作，主要内容包括：本发明采用了一种电磁式漏电断路器,包括壳体,壳体内包括断路连杆、电磁脱扣组件、操作手柄,电磁脱扣组件包括断路顶杆、漏电顶杆与漏电连杆,漏电顶杆于断路顶杆内穿置,壳体内分布有漏电组件,漏电组件包括漏电脱扣器,漏电脱扣器处包括驱动杆,漏电脱扣器与电磁脱扣组件之间设有漏电跳扣及漏电锁扣,驱动杆伸于漏电跳扣的一侧,漏电顶杆的一端伸于漏电跳扣的一侧,漏电顶杆的另一端伸向触头系统,通过漏电连杆形成操作手柄与漏电锁扣的联动连接。通过简单的漏电跳扣及漏电锁扣解决将漏电组件与其他断路器组件设于同一平台时,相互之间的联动问题,仅占用较小空间,通过双连杆带动漏电部分以及触头部分的相互动作,实现漏分合闸,设计新颖。(The invention discloses an electromagnetic leakage circuit breaker, which comprises a shell, wherein a circuit breaking connecting rod, an electromagnetic tripping assembly and an operating handle are arranged in the shell, the electromagnetic tripping assembly comprises a circuit breaking ejector rod, a leakage ejector rod and a leakage connecting rod, the leakage ejector rod penetrates through the circuit breaking ejector rod, the leakage assembly is distributed in the shell and comprises a leakage tripper, the leakage tripper comprises a driving rod, a leakage jump buckle and a leakage lock catch are arranged between the leakage tripper and the electromagnetic tripping assembly, the driving rod extends to one side of the leakage jump buckle, one end of the leakage ejector rod extends to one side of the leakage jump buckle, the other end of the leakage ejector rod extends to a contact system, and the operating handle and the leakage lock catch are in linkage connection through the leakage connecting rod. When the same platform is located with electric leakage subassembly and other circuit breaker subassemblies through simple electric leakage jump knot and electric leakage hasp solution, mutual linkage problem only occupies less space, drives the mutual action of electric leakage part and contact part through two connecting rods, realizes leaking the divide-shut brake, the modern design.)

1. The utility model provides an electromagnetic type residual current circuit breaker, includes the casing, including the connecting rod that opens circuit, contact system, with the electromagnetic tripping assembly of contact system adaptation, distribute in contact system one side and partly stretch out the operating handle in the casing outside, operating handle and contact system pass through the connecting rod that opens circuit form the linkage and be connected, electromagnetic tripping assembly include the ejector pin that opens circuit that can supply to promote the action of contact system, its characterized in that: the electromagnetic tripping component also comprises an electric leakage ejector rod which is inserted in the circuit breaking ejector rod, the leakage ejector rod reciprocates in the circuit breaking ejector rod, a leakage assembly is distributed on one side of the shell, which is far away from the contact system and opposite to the electromagnetic tripping assembly, the leakage assembly comprises a leakage tripping device, the leakage tripping device comprises a driving rod facing one side of the electromagnetic tripping assembly, a leakage tripping buckle and a leakage lock buckle which are matched with each other are arranged between the leakage tripper and the electromagnetic tripping component, the leakage lock catch comprises a lock catch transmission part which is propped against the leakage jump buckle, a driving rod on the leakage release extends to one side of the leakage jump buckle, one end of a leakage ejector rod extends to one side of the leakage jump buckle, and the other end of the electric leakage ejector rod extends to the contact system, and the shell also comprises an electric leakage connecting rod which forms linkage connection of the operating handle and the electric leakage lock catch.

2. An electromagnetic residual-current circuit breaker according to claim 1, characterized in that: the electric leakage jump buckle and the electric leakage lock catch are both limited at one end and movable at the other end.

3. An electromagnetic residual-current circuit breaker according to claim 1 or 2, characterized in that: the casing department forms jump knot stand and hasp stand respectively for the position of electric leakage jump knot and electric leakage hasp, the electric leakage jump knot includes free end and jump knot spacing end, the electric leakage hasp include with jump knot spacing end be the spacing end of hasp that homonymy formula set up and supply electric leakage hasp and electric leakage connecting rod complex hasp linkage end, electric leakage jump knot and electric leakage hasp be connected with jump knot stand through jump knot spacing end and hasp stand respectively and constitute the spacing of electric leakage jump knot and electric leakage hasp casing department, the electromagnetic trip subassembly position of orientation forms jump knot transmission end between jump knot spacing end and free end on the electric leakage jump knot, and the jump knot transmission end that should form closes on with the electric leakage ejector pin on the electromagnetic trip subassembly, just the free end on the electric leakage jump knot close on with the actuating lever on the electric leakage tripper.

4. An electromagnetic residual-current circuit breaker according to claim 3, characterized in that: jump and detain and be formed with the contained angle position between the department free end and the jump transmission end of detaining, spacing in the top that the electric leakage was detained in the electric leakage hasp superpose of casing department, hasp transmission portion connect in the electric leakage and jump the below position of detaining the hasp linkage end of department, and arrange in the position of contained angle position and close on with the casing, hasp transmission portion and electric leakage jump detain and go up one side conflict of keeping away from the electric leakage ejector pin.

5. An electromagnetic residual-current circuit breaker according to claim 1 or 2, characterized in that: the circuit breaking ejector rod is of a hollow structure, and the hollow inner diameter of the circuit breaking ejector rod is matched with the outer diameter of the electric leakage ejector rod.

6. An electromagnetic residual-current circuit breaker according to claim 3, characterized in that: the circuit breaking ejector rod is of a hollow structure, and the hollow inner diameter of the circuit breaking ejector rod is matched with the outer diameter of the electric leakage ejector rod.

7. An electromagnetic residual-current circuit breaker according to claim 1 or 2, characterized in that: the casing in still including distributing in contact system one side and being close to the inlet wire terminal subassembly of casing border position and distributing in the terminal subassembly that goes out of line for casing department opposite side border position, the electric leakage subassembly still includes circuit board, zero sequence current transformer and brush line, electric leakage release, circuit board and zero sequence current transformer are formula setting in proper order, the brush line in zero sequence current transformer's intermediate position department form wear to put, and its one end is connected with the electromagnetism dropout subassembly, the other end is connected with the terminal subassembly that goes out of line.

8. An electromagnetic residual current circuit breaker according to claim 1, 2 or 4, characterized in that: the number of turns of the leakage release is 2600 turns.

9. An electromagnetic residual current circuit breaker according to claim 1, 2 or 4, characterized in that: the zero sequence current transformer has 700 and 900 turns.

10. An electromagnetic residual current circuit breaker according to claim 1, 2 or 4, characterized in that: the number of turns of the zero sequence current transformer is 900.

Technical Field

The invention relates to the field of circuit breakers, in particular to an electromagnetic leakage circuit breaker.

Background

An earth leakage breaker is a switch used in an electric circuit and automatically operated when an earth leakage current actually exceeds a predetermined value. The leakage circuit breaker is generally classified into an electronic type and an electromagnetic type.

In the actual use of the electronic leakage circuit breaker in the market, the conditions of short service life and poor anti-interference performance are generally found; meanwhile, the circuit breaker with the leakage protection function is generally available on the market, the designed thickness of the circuit breaker is usually equal to the thickness of an N pole on the basis of the thicknesses of a plurality of P-number circuit breakers, namely the thickness of a 1P circuit breaker is usually 18mm, and when the thickness of the N pole is added, the designed thickness of the circuit breaker can reach 36mm, and meanwhile, the required installation space of the installed circuit breaker can be larger.

Disclosure of Invention

In order to solve the problems, the invention provides the electromagnetic leakage circuit breaker which has a simple structure, long service life and stable strong anti-interference performance, and cannot be installed due to the fact that the installation of leakage protection in an N pole causes thickness increase.

In order to achieve the above purpose, the invention adopts an electromagnetic leakage circuit breaker, which comprises a shell, wherein the shell comprises a circuit breaking connecting rod, a contact system, an electromagnetic tripping component adaptive to the contact system, and an operating handle which is distributed on one side of the contact system and partially extends out of the outer side of the shell, the operating handle and the contact system are in linkage connection through the circuit breaking connecting rod, the electromagnetic tripping component comprises a circuit breaking ejector rod capable of pushing the contact system to act, the electromagnetic tripping component also comprises a leakage ejector rod, the leakage ejector rod penetrates through the circuit breaking ejector rod and reciprocates in the circuit breaking ejector rod, the leakage component is distributed on one side, far away from the contact system, of the shell relative to the electromagnetic tripping component, the leakage component comprises a leakage tripper, the leakage tripper comprises a driving rod facing one side of the electromagnetic tripping component, and a leakage lock catch adaptive to leakage is arranged between the leakage tripper and the electromagnetic tripping component, the electric leakage lock catch comprises a lock catch transmission part, the lock catch transmission part is abutted against the electric leakage jump buckle, a driving rod on the electric leakage release extends to one side of the electric leakage jump buckle, one end of an electric leakage ejector rod extends to one side of the electric leakage jump buckle and is respectively closed to the electric leakage jump buckle, the other end of the electric leakage ejector rod extends to a contact system, a leakage connecting rod is further arranged in the shell, and the electric leakage connecting rod forms linkage connection of an operating handle and the electric leakage lock catch.

The beneficial effect of above-mentioned structure: the leakage component is arranged on one side of the electromagnetic tripping component, which is far away from the contact system, so that the designed leakage component and other components of the circuit breaker are arranged on the same plane, the situation that the thickness of the circuit breaker structure is increased due to the installation of the leakage part is avoided, and the situation that a larger installation space is required for installation due to the increase of the thickness of the circuit breaker in the prior art is solved; the invention also discloses a method for realizing miniaturization of the leakage breaker, which comprises extracting a narrow installation space between the leakage component and the electromagnetic tripping component, installing a leakage tripping buckle and a leakage lock catch, driving an operating handle used for controlling the opening and closing of the breaker to act by the leakage component when the leakage occurs, driving a contact system to act when the leakage breaker is opened or over-current, penetrating the leakage push rod into a breaking push rod of the opening and closing, reciprocating the leakage push rod in the breaking push rod, extending one end of the leakage push rod into a side position close to the leakage tripping buckle, extending the other end of the leakage push rod to the contact system, synchronously extending a driving rod for driving the leakage tripping device to act to the other side close to the leakage tripping device, thereby enabling the driving rod to act to push the leakage tripping buckle to act to one side of the electromagnetic tripping component and push the leakage push rod to act, otherwise, the action of the leakage ejector rod can push the leakage tripping buckle to act towards one side of the leakage release to be connected with the action of the driving rod, and the leakage locking buckle is connected with the operating handle through the leakage connecting rod; in practical use, in a switching-on state of the electromagnetic leakage circuit breaker, most of a driving rod on the leakage tripper is retracted into the leakage tripper, meanwhile, a leakage ejector rod extends out and pushes against the leakage tripping buckle, the leakage tripper drives the leakage connecting rod to act due to the operation of an operating handle, so that the leakage tripper moves towards the direction of an electromagnetic tripping component, further, a lock catch transmission part on the leakage tripper is far away from the leakage tripping buckle, and the action of the operating handle enables a circuit breaking connecting rod to drive a contact system to act towards one side of the electromagnetic tripping component and act towards one side close to the leakage ejector rod, when a leakage condition occurs, the leakage tripper acts and pushes the driving rod to extend outwards, the leakage tripping buckle is synchronously pushed to move towards the direction of the electromagnetic tripping component, the leakage ejector rod pushing against the leakage tripping buckle is pushed, and the leakage ejector rod acts towards one end of the contact system to push, the leakage tripping buckle pushes the leakage ejector rod to act, and simultaneously contacts with a lock catch transmission part on the leakage lock catch to push the leakage lock catch to act, so that the operating handle can be pushed to act through the linkage of the leakage connecting rod, the operating handle can be pushed through the leakage connecting rod to act, and the operating handle acts synchronously due to the action of the contact system to drive the acting force of the circuit breaking connecting rod, so that the operating handle acts and the leakage circuit breaker is switched off; the leakage circuit breaker designed by the invention has a simple structure, solves the problem of mutual linkage between the leakage component and other circuit breaker components when the leakage component and other circuit breaker components are arranged on the same platform through the simple leakage tripping buckle and the leakage locking buckle, only occupies a small space, and simultaneously drives the mutual action of the leakage part and the contact part in a double-connecting-rod mode to realize the opening and closing of the leakage circuit breaker.

Particularly, the electric leakage jump buckle and the electric leakage lock buckle are limited at one end, and the other end can move; can make this electric leakage circuit breaker reasonable in design through the aforesaid, the unable normal operating of operating handle, electromagnetism dropout subassembly and electromagnetism release, or the unable problem of normally opening and closing the floodgate can not appear.

Particularly, the jump buckle upright post and the lock buckle upright post are respectively formed at the position of the shell relative to the electric leakage jump buckle and the electric leakage lock buckle, the leakage jump buckle comprises a free end and a jump buckle limiting end, the leakage lock catch comprises a lock catch limiting end and a lock catch linkage end, the lock catch limiting end and the jump buckle limiting end are arranged in the same side manner, the lock catch linkage end is used for matching the leakage lock catch and the leakage connecting rod, the leakage jump buckle and the leakage lock catch are respectively connected with the jump buckle upright post through the jump buckle limiting end and the lock catch limiting end is connected with the lock catch upright post to form the limit of the leakage jump buckle and the leakage lock catch shell, the leakage tripping button is provided with a tripping transmission end at the position of the electromagnetic tripping component facing between the tripping limiting end and the free end, the formed jump buckle transmission end is close to an electric leakage ejector rod on the electromagnetic tripping component, and a free end on the electric leakage jump buckle is close to a driving rod on the electric leakage tripping device; through the above-mentioned limited to electric leakage jump buckle and electric leakage hasp in casing department position, can make electric leakage circuit breaker's structure more reasonable, the unable normal transmission or the circumstances that hinders all actions of other spare parts can not appear between each spare part simultaneously.

Particularly, an included angle position is formed between the free end of the jump buckle and the jump buckle transmission end, the electric leakage lock catch limited at the shell is overlapped above the electric leakage jump buckle, the lock catch transmission part is connected to the lower position of the lock catch linkage end of the electric leakage jump buckle and is arranged at the included angle position and close to the shell, and the lock catch transmission part is abutted against one side of the electric leakage jump buckle far away from the electric leakage ejector rod; through the position that the aforesaid extends to the casing to the hasp transmission portion on the hasp that will leak electricity through the contained angle position, can realize the space of maximum utilization casing, also make this electric leakage circuit breaker's structure compacter, and adopt and only extend the position that closes on the casing with hasp transmission portion, can prevent from appearing if contacting the casing from this, then have certain possibility to appear wearing and tearing the casing, or hinder the condition that electric leakage hasp normally acted.

Particularly, the circuit breaking ejector rod is of a hollow structure, and the hollow inner diameter of the circuit breaking ejector rod is matched with the outer diameter of the leakage ejector rod; through the arrangement, the design of the electric leakage circuit breaker is more reasonable, and the condition that the electric leakage ejector rod normally works due to unreasonable design of the open circuit ejector rod can be avoided.

Particularly, the shell also comprises an incoming terminal assembly which is distributed on one side of the contact system and is close to the edge position of the shell and an outgoing terminal assembly which is distributed on the edge position of the other side opposite to the shell, the leakage assembly also comprises a circuit board, a zero sequence current transformer and an electric brush wire, the leakage release, the circuit board and the zero sequence current transformer are arranged in sequence, the electric brush wire is penetrated in the middle position of the zero sequence current transformer, one end of the electric brush wire is connected with the electromagnetic release assembly, and the other end of the electric brush wire is connected with the outgoing terminal assembly; through the arrangement, the layout of the electric leakage assembly is more reasonable, and the electric leakage circuit breaker is more compact.

In particular, the number of turns of the leakage release is 2600 turns.

Particularly, the number of turns of the zero-sequence current transformer is 700 and 900; the qualification rate of the turn number of the zero-sequence current transformer in the breaker on the market needs to reach 700 plus 800 turns to meet the normal use, the turn number of the zero-sequence current transformer is set to 700 plus 900 turns, and the A-type angle of the zero-sequence current transformer can reach the optimal state if the turn number reaches 900 turns.

Particularly, the number of turns of the zero sequence current transformer is 900 turns; the above mentioned number of turns reaches 900 turns to make the a-type angle of the zero sequence current transformer reach the optimal state, so the number of turns of the zero sequence current transformer is set to 900 turns, and the setting is also the best scheme for setting the number of turns of the zero sequence current transformer.

Drawings

Fig. 1 is a schematic perspective view of an electromagnetic residual current circuit breaker according to the present invention;

fig. 2 is a schematic diagram of the internal structure of the electromagnetic residual current circuit breaker according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic diagram of the cooperation of the leakage connecting rod, the operating handle, the electromagnetic trip assembly, the leakage trip, the leakage lock catch and the leakage lock catch according to the present invention;

fig. 5 is a perspective view of the electromagnetic trip assembly of the present invention;

fig. 6 is an exploded schematic view of the electromagnetic trip assembly of the present invention;

FIG. 7 is a schematic diagram of the leakage lock and the leakage lock;

FIG. 8 is an exploded view of the leakage lock and the leakage lock of the present invention;

FIG. 9 is a schematic view of the leakage lock and the leakage lock at another angle;

FIG. 10 is an exploded view of the residual current buckle and the residual current buckle from another angle according to the present invention;

Detailed Description

As shown in fig. 1-10, the embodiment of the present invention employs an electromagnetic leakage circuit breaker, which includes a housing 1, the housing 1 includes a breaking link 9, a contact system 10, an electromagnetic trip assembly 7 adapted to the contact system 10, and an operating handle 2 distributed at one side of the contact system 10 and partially extending out of the housing 1, the operating handle 2 and the contact system 10 form a linkage connection through the breaking link 9, the electromagnetic trip assembly 7 includes a breaking ejector 72 for pushing the contact system 10 to operate, the electromagnetic trip assembly 7 further includes a leakage ejector 71, the leakage ejector 71 penetrates through the breaking ejector 72, and the leakage ejector 71 reciprocates in the breaking ejector 72, the leakage assembly is distributed at a side of the housing 1 away from the contact system 10 relative to the electromagnetic trip assembly 7, the leakage assembly includes a leakage release 6, the leakage release 6 includes a driving rod 61 facing one side of the electromagnetic trip assembly 7, be provided with the electric leakage of looks adaptation between electric leakage release 6 and the electromagnetic trip component 7 and jump knot 30 and electric leakage hasp 20, this electric leakage hasp 20 includes hasp transmission part 203, this hasp transmission part 203 supports on electric leakage jumps knot 30, actuating lever 61 on the electric leakage release 6 stretches out in one side of electric leakage jumps knot 30, the one end of electric leakage ejector pin 71 stretches out in one side of electric leakage jumps knot 30, and close to with electric leakage jump knot 30 respectively, the other end of electric leakage ejector pin 71 stretches to contact system 10, still include electric leakage connecting rod 8 in the casing 1, form the linkage connection of operating handle 2 and electric leakage hasp 20 through this electric leakage connecting rod 8.

The leakage component is arranged on one side, far away from the contact system 10, of the electromagnetic tripping component 7, so that the designed leakage component and other components of the circuit breaker are arranged on the same plane, the situation that the thickness of the circuit breaker structure is increased due to the installation of a leakage part is avoided, the situation that a larger installation space is required for installation due to the increase of the thickness of the circuit breaker in the prior art is solved, and the electromagnetic circuit breaker has the characteristics of long service life, strong interference resistance and stable performance; and the invention is to realize the electric leakage circuit breaker as small as possible, adopt and draw the narrow installation space between electromagnetic trip assembly 7 and the electric leakage assembly, and incorporate the electric leakage jump ring 30 and electric leakage lock catch 20, meanwhile, in order to realize when the electric leakage situation happens, the electric leakage assembly can drive the operating handle 2 used for controlling the breaker to close and open the brake to act, will drive the contact system 10 to act when driving the electric leakage circuit breaker to open the circuit or overflow, and realize the break ejector pin 72 of the open and close the brake to penetrate the electric leakage ejector pin 71, the electric leakage ejector pin 71 can reciprocate in the break ejector pin 72, and stretch one end of the electric leakage ejector pin 71 into the side position adjacent to the electric leakage jump ring 30, another end stretches to the contact system 10, extend the actuating lever 61 used for driving the electric leakage release 6 to act to another side adjacent to the electric leakage jump ring 30 synchronously, thus make when the actuating lever 61 act can push the electric leakage jump ring 30 to the electromagnetic trip assembly 7 one side act and push the electric, on the contrary, the action of the leakage ejector rod 71 can push the leakage tripping buckle 30 to act towards one side of the leakage release 6 and drive the driving rod 61 to act, and the invention also adopts the mode that the leakage locking buckle 20 is connected with the operating handle 2 through the leakage connecting rod 8; in practical use, in a closing state of the electromagnetic leakage circuit breaker, most of the driving rod 61 on the leakage release 6 is retracted into the leakage release 6, the leakage ejector rod 71 extends out and pushes against the leakage trip 30, the leakage latch 20 moves towards the electromagnetic trip assembly 7 due to the action of the leakage connecting rod 8 driven by the operating handle 2, so that the latch transmission part 203 on the leakage latch 20 is far away from the leakage trip 30, and the circuit breaking connecting rod 9 drives the contact system 10 to move towards one side of the electromagnetic trip assembly 7 and move to one side close to the leakage ejector rod 71 due to the action of the operating handle 2, when a leakage condition occurs, the leakage release 6 moves and pushes the driving rod 61 to extend outwards, the leakage trip 30 is synchronously pushed to move towards the electromagnetic trip assembly 7, and the leakage ejector rod 71 pushes against the leakage trip 30, the leakage ejector rod 71 acts towards one end of the contact system 10 to push the contact system 10 to reset, wherein when the leakage tripping buckle 30 pushes the leakage ejector rod 71 to act, the leakage tripping buckle 30 is in contact with the buckle transmission part 203 on the leakage buckle 20 to push the leakage buckle 20 to act, so that the operation handle 2 is pushed to act by the linkage of the leakage connecting rod 8, the operation handle 2 can be pushed by the leakage connecting rod 8, and the contact system 10 acts synchronously to drive the acting force of the breaking connecting rod 9, so that the operation handle 2 acts and the leakage circuit breaker is switched off; the leakage circuit breaker designed by the invention has a simple structure, solves the problem of mutual linkage between the leakage component and other circuit breaker components when the leakage component and other circuit breaker components are arranged on the same platform through the simple leakage tripping buckle 30 and the leakage locking buckle 20, only occupies a small space, and simultaneously drives the mutual action of the leakage part and the contact part in a double-connecting-rod mode to realize the opening and closing of the leakage circuit breaker. .

The leakage tripping buckle 30 and the leakage locking buckle 20 are limited at one end and movable at the other end.

The position of the casing 1 corresponding to the position of the leakage jump buckle 30 and the leakage lock 20 forms a jump buckle upright post 11 and a lock upright post 12 respectively, the leakage jump buckle 30 comprises a free end 301 and a jump buckle limiting end 302, the leakage lock 20 comprises a lock limiting end 201 arranged in the same side with the jump buckle limiting end 302 and a lock linkage end 202 for the leakage lock 20 to match with the leakage connecting rod 8, the leakage jump buckle 30 and the leakage lock 20 are connected with the jump buckle upright post 11 through the jump buckle limiting end 302 and the lock limiting end 201 is connected with the lock upright post 12 to form the limit of the leakage jump buckle 30 and the leakage lock 20 at the casing 1, the electromagnetic trip component 7 facing between the jump buckle limiting end 302 and the free end 301 on the leakage jump buckle 30 forms a jump buckle transmission end 303, and the formed jump buckle transmission end 303 is adjacent to the leakage mandril 71 on the electromagnetic tripping component 7, and the free end 301 of the earth leakage trip 30 is adjacent to the driving rod 61 of the earth leakage trip unit 6.

An included angle is formed between the free end 301 of the jump buckle and the jump buckle transmission end 303, the leakage lock 20 limited at the casing 1 is overlapped above the leakage jump buckle 30, the lock transmission part 203 is connected below the lock linkage end 202 of the leakage jump buckle 30, and is arranged at the position of the included angle and close to the casing 1, and the lock transmission part 203 is abutted against one side of the leakage jump buckle 30, which is far away from the leakage ejector rod 71.

The leakage protection device comprises a shell 1, a contact system 10, a leakage protection component, a leakage tripping device 6, a zero sequence current transformer 3 and a brush wire 40, wherein the shell 1 is internally provided with an incoming terminal component which is distributed on one side of the contact system 10 and close to the edge position of the shell 1, an outgoing terminal component 5 which is distributed on the edge position of the other side corresponding to the shell 1, the leakage protection component further comprises a circuit board 4, the zero sequence current transformer 3 and the brush wire 40, the leakage tripping device 6, the circuit board 4 and the zero sequence current transformer 3 are sequentially arranged, the brush wire 40 penetrates through the middle position of the zero sequence current transformer 3.

The breaking ejector rod 72 is of a hollow structure, and the hollow inner diameter of the breaking ejector rod is matched with the outer diameter of the leakage ejector rod 71; the number of turns of the leakage release 6 is 2600 turns; the number of turns of the zero sequence current transformer 3 is 700 and 900. It is mentioned that if the number of turns reaches 900 turns, the a-type angle of the zero sequence current transformer 3 can reach the optimal state, so the number of turns of the zero sequence current transformer 3 is set to 900 turns, and the setting is also the optimal scheme for setting the number of turns of the zero sequence current transformer 3.