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Residual-current circuit breaker

A leakage circuit breaker and circuit breaker technology, which is applied to circuit breaker components, circuits, electrical components, etc., can solve problems that affect the service life of leakage circuit breaker breaking capacity, contact failure, complex structure, etc., and achieve good conduction effect , fast conduction, and the effect of improving breaking capacity

Pending Publication Date: 2022-01-07
浙江九策智能电气有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A small amount of arc will be generated when the moving contact of the neutral line and the static contact of the neutral line are in contact, and the existing leakage circuit breaker does not have the function of extinguishing the arc of the breaking unit of the neutral line. The surface of the neutral static contact is burnt by the arc, which may even cause the contact to fail, thereby affecting the breaking capacity and service life of the leakage circuit breaker
[0003] In addition, most of the existing leakage circuit breakers use double operating mechanisms, and the live wire and the neutral wire use the operating mechanism separately, which has a relatively complicated structure and a large volume.

Method used

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  • Residual-current circuit breaker
  • Residual-current circuit breaker
  • Residual-current circuit breaker

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Embodiment Construction

[0044] The implementation of the application will be described in detail below in conjunction with the accompanying drawings and examples, so that the implementation process of how the application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented.

[0045] like Figure 1-21 As shown, the present invention is an earth leakage circuit breaker, including an N-level housing 10 and an L-level housing 20, an intermediate housing 30 is arranged between the N-level housing 10 and the L-level housing 20, and the N The class housing 10 and the intermediate housing 30 form an N-class circuit breaker part, and the L-class housing 20 and the intermediate housing 30 form an L-class circuit breaker part.

[0046] see Figure 1-3 , wherein the N-level circuit breaker part where the N-level housing 10 is located and the L-level circuit breaker part where the L-level housing 20 is located share an operating mechanism 40, and ...

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Abstract

The invention relates to a residual-current circuit breaker which comprises an N-stage shell and an L-stage shell. A middle shell is arranged between the N-stage shell and the L-stage shell, an N-stage circuit breaker part where the N-stage shell is located and an L-stage circuit breaker part where the L-stage shell is located share one operating mechanism, and the N-stage circuit breaker and the L-stage circuit breaker are disconnected at the same time. The operating mechanism is fixed on the middle shell, the operating mechanism comprises a moving contact support, a first moving contact and a second moving contact, and the first moving contact and the second moving contact are located at the two sides of the moving contact support. According to the invention, by adopting one set of operating mechanism, the simultaneous closing and simultaneous opening of the two stages of circuit breakers are realized, accessories are reduced, and the size can be reduced.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a leakage circuit breaker. Background technique [0002] Leakage circuit breakers usually include a housing, a live line breaking unit and a neutral line breaking unit. The live line breaking unit includes a live line operating mechanism, a live line tripping mechanism, a live line moving contact, a live line static contact, a live line arc extinguishing cover, and a live line terminal. The neutral line breaking unit includes a neutral line operating mechanism, a neutral line tripping mechanism, a neutral line moving contact, a neutral line static contact and a neutral line terminal. When the moving contact of the live wire contacts with the static contact of the live wire, a large number of arcs will be generated. The arc extinguishing function is realized through the set live wire arc extinguishing cover to ensure the breaking capacity of the circuit breaker and the sa...

Claims

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Application Information

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IPC IPC(8): H01H71/12H01H71/24H01H73/18H01H71/08
CPCH01H71/12H01H71/24H01H73/18H01H71/128H01H71/08
Inventor 王琪黄明芳耿永强俞小平
Owner 浙江九策智能电气有限公司
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