Contact system of residual current action circuit breaker

A residual current and contact system technology, applied in circuits, electric switches, electrical components, etc., can solve the problems of unstable operation of the contact system, limited number of operations, complicated manufacturing process, etc., achieve low processing cost and prolong service life , Slight effect of burning

Active Publication Date: 2017-08-08
SASSIN INT ELECTRIC SHANGHAI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a contact system of a residual current operated circuit breaker, which is used to solve the problems of unstable operation, complicated manufacturing process and limited number of operations of the contact system in the prior art. question

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  • Contact system of residual current action circuit breaker
  • Contact system of residual current action circuit breaker
  • Contact system of residual current action circuit breaker

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Embodiment Construction

[0050] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0051] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper"...

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Abstract

The invention provides a contact system of a residual current action circuit breaker. The contact system comprises a wiring terminal, a movable contact, an arc extinguishing system, a rotation shaft, a shell, a movable contact spring and a rotation shaft counter force spring. When the movable contact and a static contact are closed, a driving force is continuously applied to a rotation shaft driving arm to drive the movable contact spring so that the movable contact and the static contact are in contact; and when the movable contact and the static contact are disconnected, the driving force is withdrawn, so that the rotation shaft rotates towards a direction far away from the static contact under an effect of the rotation shaft counter force spring, and the movable contact and the static contact are disconnected. By the contact system of the residual current action circuit breaker, the problems that the contact system is not stable in working, the manufacturing process is complicated and the operation frequency is limited in the prior art are effectively solved.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a contact system of a residual current operated circuit breaker. Background technique [0002] In the terminal power distribution of the low-voltage power distribution system, it is necessary to install a residual current operated circuit breaker in order to quickly cut off the faulty power supply in a very short time and protect the safety of people and electrical equipment. [0003] Low-voltage residual current operated circuit breakers all need a contact system for making and breaking the circuit. When a fault current occurs in the circuit, the contact system must be able to reliably break the fault circuit and protect the safety of the electrical load. [0004] However, the contact systems of existing residual current operated circuit breakers usually have the following deficiencies: [0005] (1) The rotating shaft is positioned by two or more parts, which makes it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/38H01H9/30H01H83/00
CPCH01H3/38H01H9/30H01H83/00
Inventor 陈志贤苏邯林郑永刚
Owner SASSIN INT ELECTRIC SHANGHAI CO LTD
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