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Circuit breaker with arc extinguishing effect

A circuit breaker and functional technology, applied in the direction of circuits, electrical components, electric switches, etc., can solve the problems of circuit breaker service life impact, circuit breaker combination and breaking time delay, safety performance is not strong, etc., to improve arc extinguishing efficiency, Effect of improving uniformity and prolonging service life

Active Publication Date: 2018-02-09
国网河南省电力公司武陟县供电公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the circuit breaker is combined and broken by a touch switch, there will be an arc in the process of combining and breaking the circuit breaker, which will delay the combination and breaking time of the circuit breaker, and burn the contacts of the touch switch of the circuit breaker, which is safe. The performance is not strong, and the service life of the circuit breaker is also affected

Method used

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  • Circuit breaker with arc extinguishing effect
  • Circuit breaker with arc extinguishing effect
  • Circuit breaker with arc extinguishing effect

Examples

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Embodiment Construction

[0012] Such as Figure 1-3 The shown circuit breaker with arc extinguishing function includes a housing 1, a moving contact 2 and a static contact 3, and an arc extinguishing chamber inside the housing 1, and the arc extinguishing chamber includes an insulating box 4 And the metal grid 5, the metal grid 5 is left with a through groove for the moving contact 2 to move up and down, and the static contact 3 is located below the through groove; the edge of the metal grid 5 is connected with the insulating box 4, The metal grid 5 is a stepped structure, and the thickness of the far end of the metal grid 5 relative to the static contact 3 is greater than the thickness of the proximal end; the surface of the metal grid 5 is provided with several protrusions 51, and the adjacent metal grid 5 The protrusions 51 are oppositely arranged.

[0013] The side wall of the insulating box 4 is a ceramic layer 41 , and the ceramic layer 41 is a sandwich structure, and the interlayer is filled w...

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Abstract

The invention relates to a circuit breaker with an arc extinguishing effect. The circuit breaker comprises a shell, a moving contact, a fixed contact and an arc extinguishing chamber arranged in the shell, wherein the arc extinguishing chamber comprises an insulating box body and metal grid plates; a through groove for moving the moving contact up and down is reserved in each metal grid plate; thefixed contact is located at the lower part of the through groove; the edge parts of the metal grid plates are connected with the insulating box body; the metal grid plates are of a stepped structure;the thickness of a far end, relative to the fixed contact, of each metal grid plate is greater than that of a near end; a plurality of bumps are arranged on the surfaces of the metal grid plates; andthe bumps on the adjacent metal grid plates are oppositely arranged. The circuit breaker is provided with the arc extinguishing chamber, so that the circuit breaker can play a quick arc extinguishingrole in arcs and the service life of the circuit breaker is prolonged.

Description

technical field [0001] The invention relates to a circuit breaker with arc extinguishing function, which belongs to the field of electric equipment. Background technique [0002] As a commonly used electrical appliance on the circuit in power application and power distribution, the circuit breaker is mainly used to protect the safety of electrical circuits and equipment. When the electrical circuit or electrical equipment is overloaded, short-circuited, etc. And equipment security, so it is widely used. However, since the circuit breaker is combined and broken by a touch switch, there will be an arc in the process of combining and breaking the circuit breaker, which will delay the combination and breaking time of the circuit breaker, and burn the contacts of the touch switch of the circuit breaker, which is safe. The performance is not strong, and the service life of the circuit breaker is also affected. Contents of the invention [0003] In order to solve the above prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/36H01H9/52
CPCH01H9/36H01H9/52
Inventor 李廷辉陶贝贝王延军秦江平
Owner 国网河南省电力公司武陟县供电公司
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