Composite switch

Abstract

The invention provides a composite switch which comprises a shell, a first wiring terminal, a second wiring terminal, a handle, a tripping connecting rod mechanism, an electromagnetic tripper, a firstmovable contact, a first static contact, a bimetallic strip, a current transformer, a first driving mechanism, a first driving piece, a second driving piece, a second driving mechanism, a second static contact, a third static contact, a second movable contact, a first connecting piece, a second connecting piece, a third connecting piece and a circuit board. The first movable contact corresponds to the first static contact, and the second movable contact corresponds to the second static contact and the third static contact. The composite switch can solve the problems of poor protection precision and incompleteness of a traditional circuit breaker, can be controlled intelligently while realizing a power distribution protection function and is suitable for the frequent on-off control, the on-off control can be carried out according to the power demands, the service life of the composite switch is not influenced, the local or remote centralized monitoring management can also be realized,and the power distribution safety and the intelligent degree are improved.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment, and in particular relates to a composite switch. Background technique [0002] Circuit breakers are switching devices used in power distribution systems to cut off circuits when overload or short-circuit faults occur. They are widely used in power distribution places such as industry, commerce and residential buildings. The circuit breaker can no longer meet the current needs, including the inability to perform frequent on-off to avoid affecting the stability of the circuit breaker, affecting the service life, and requires manual control, which is not convenient for frequent on-off, and is not suitable for power distribution on-off Intelligent control; and the traditional circuit breaker has the problems of high discreteness, poor protection accuracy and incomplete power distribution protection function due to the difference in physical characteristics of its own electromagnetic ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects in the prior art and provide a compound switch, which can solve the problems of poor protection precision and incomplete protection in traditional circuit breakers in the low-voltage power distribution system of the prior art, and there are still hidden dangers in power distribution safety It can realize the power distribution protection function and realize the intelligent control of the compound switch at the same time, which is suitable for the frequent on-off control of the circuit, and does not affect the service life of the compound switch, which significantly improves the power distribution safety and power distribution. Degree of intelligent control

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