Leakage breaker

Abstract

The invention discloses a leakage breaker, comprising an overcurrent protection module and a leakage protection module. The overcurrent protection module comprises an overcurrent module shell, an overcurrent tripping mechanism, a wiring assembly and an overcurrent tripping indicating mechanism, wherein the overcurrent tripping mechanism, the wiring assembly and the overcurrent tripping indicating mechanism are arranged in the overcurrent module shell. The leakage protection module comprises a leakage module shell, a leakage tripping mechanism, a zero sequence mutual inductor, a second wiring assembly, an experiment button assembly and a leakage tripping indicating mechanism, wherein the leakage tripping mechanism, the zero sequence mutual inductor, the wiring assembly, the experiment button assembly and the leakage tripping indicating mechanism are arranged in the leakage module shell; the experiment button assembly comprises a button and a torsional spring which provides elasticity for button reset; the torsional spring comprises a spiral installation part and two linear elastic terminals; and the installation part of the torsional spring is arranged in the overcurrent module shell, the two elastic terminals of the torsional spring are arranged in the leakage module shell, one of the two elastic terminals is abutted against the bottom of the torsional spring, and the other elastic terminal is abutted against the leakage module shell. The invention has simplified structure, and is easy to be manufactured.

Description

technical field [0001] The invention belongs to the technical field of low-voltage switches, and in particular relates to a leakage circuit breaker. Background technique [0002] Existing small leakage circuit breakers are generally used in conjunction with overload / overcurrent circuit breakers; after tripping, in order to allow users to clearly know whether it is due to overload / overcurrent tripping or leakage tripping, it is necessary to switch on the leakage circuit breaker. Set up the leakage indication mechanism. [0003] Patent document CN1186798Y discloses an earth leakage circuit breaker. The structure of this earth leakage indicating mechanism is extremely complicated, and the processing is difficult and costly. Contents of the invention [0004] The purpose of the present invention is to provide a leakage indication mechanism for leakage circuit breakers with simplified structure and easy processing and manufacture. [0005] The technical solution for realizing...

AI Technical Summary

Problems solved by technology

[0003] Patent document CN1186798Y discloses a leakage circuit breaker, the structure of the leakage indication mechanism is extremely complicated, the processing is difficult and the cost is high

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