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Breaker

A circuit breaker and moving contact technology, which is applied in the direction of circuit breaker components, circuit breaker contacts, protective switch operation/release mechanisms, etc., can solve the problems of slow response speed and poor safety of moving and static contacts, and avoid circuit breakers. damage, fast response, and improved reliability

Inactive Publication Date: 2016-06-01
ZHEJIANG PEOPLE ELE APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of slow breaking response speed and poor safety of the moving and static contacts in the prior art when the circuit breaker encounters a large current, thereby providing a circuit breaker

Method used

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Embodiment Construction

[0035] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] Figure 1 to Figure 5 An embodiment of a circuit breaker provided by the present invention is shown.

[0037] From figure 1 It can be seen that the circuit breaker includes a housing 7 , an operating mechanism 3 and a static contact 5 .

[0038] The housing 7 provides installation positions or / and installation structures for other components in the circuit breaker, and protects the components inside it. The casing 7 is usually molded by insulating plastic, and has good insulation and high temperature...

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Abstract

The present invention provides a breaker. The breaker comprises housing, a fixed contact, a moving contact cooperating with the fixed contact and an operation mechanism connected with the moving contact. The moving contact is in contact conduction with the fixed contact under the effect of the operation mechanism, the moving contact and the fixed contact are both provided with repulsion sections, and the repulsion sections are conductor structures extending from the contact area of the moving contact and the fixed contact. A pair of reverse currents is formed when a heavy current flows through the two repulsion sections, and the reverse current allows the moving contact and the fixed current to generate mutually repellent repulsive forces, and the repulsive forces may instantaneously drive the movement of the moving contact, so that the moving contact and the fixed contact are broken off; and moreover, compared with the traditional releasing system, the breaker is faster in response speed, and is able to avoid the damaging of heavy current to the breaker and the lines and ensure the safety of the breaker and the lines.

Description

technical field [0001] The invention relates to the technical field of switching devices, in particular to a circuit breaker. Background technique [0002] The circuit breaker is a common switching device, which is used to switch the circuit and distribute electric energy. It can also be used for infrequent operation and conversion of the line under normal conditions, and it can protect the circuit where the circuit breaker is located from overload and short circuit. [0003] A circuit breaker usually consists of a contact system, an arc extinguishing system, an operating mechanism, a tripping system, and a housing. Protection against line overload, short circuit or others is achieved by a tripping system. Trip systems generally include electromagnetic trip units and bimetal trip units. The specific working principle is: when the line is short-circuited, the strong magnetic field generated by the short-circuit current makes the active part act on the corresponding linkage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/04H01H71/10
CPCH01H73/04H01H71/10
Inventor 董微娜张立杨志国刘佳劼
Owner ZHEJIANG PEOPLE ELE APPLIANCE
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