Electric-leakage circuit breaker

Abstract

The invention relates to an electric-leakage circuit breaker which mainly solves a problem that the prior electric-leakage circuit breakers do not have electric-leakage indication at electric leakage tripping so that a user is incapable of judging whether breaking is caused by a leakage fault according to a concrete condition and thus specific effects are caused on use. The electric-leakage circuit breaker includes an electric-leakage indication mechanism which includes a tumbler, a lever and an indication button. The indication button includes a first position of extending out of a casing and a second position of burial in the casing. The tumbler is hinged below the indication button. One end of the tumbler contacts the indication button. The lever is hinged in the casing. One side of the lower end of the lever is corresponding to an electric-leakage release, and the other side is in jacking-pressing fit with the tumbler. The upper end of the lever is in clamping fit with the indication button. The electric-leakage release pushes upwards the indication button to spring out through the lever and the tumbler so that the first position is formed and when the indication button is pressed to slide downwards to clamp with the lever so that the second position is formed. The tumbler cooperates with a lock catch. Because an electric-leakage indication function is arranged in an electric-leakage part of the electric-leakage circuit breaker, when tripping and opening happen in the circuit breaker, whether tripping is caused by the leakage fault can be clearly displayed through the indication function so that follow-up operations of the user are facilitated and convenience is brought to use.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to an earth leakage circuit breaker. Background technique [0002] The principle of the leakage circuit breaker is to use the inductor to induce the current to be transmitted to the tripping mechanism to make it operate, thereby shutting off the power supply. The neutral line and the live line of the line pass through the transformer at the same time, because one positive and one negative cancel each other out, and the sum is zero. At this time, the transformer cannot sense the current. When the single-phase leakage occurs, the sum is not zero, and the mutual inductance The device can sense the current. The leakage circuit breaker determines whether the leakage protection is effective through leakage detection. By pressing the detection button, the sum of the current passing through the zero-sequence transformer is not zero, thereby generating an induced current on the zero-sequence transformer...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings and deficiencies of the background technology, the present invention provides a leakage circuit breaker, which solves the problem that the existing leakage circuit break

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