Test device for circuit breaker and circuit breaker with test device

Abstract

The invention relates to a test device used for a miniature electronic type leakage circuit breaker and the miniature electronic type leakage circuit breaker with the test device. The test device comprises a test button, a test torsion spring, a connecting conductor, a lever and a test resistor. The device can make coordination action with mechanical components of the circuit breaker. Whatever the state of the test button is, a test loop is cut off after the transmission of a leakage test signal is completed, so that the circuit breaker can be subjected to periodic tests safely even in reverse wiring.

Description

technical field [0001] The invention relates to a miniature circuit breaker, in particular to a test device for a miniature electronic leakage circuit breaker and a miniature electronic leakage circuit breaker with the test device. Background technique [0002] With the development of electrical automation, miniature electronic leakage circuit breakers have become an electrical appliance widely used in low-voltage terminal power distribution systems. The function of the leakage circuit breaker is to provide leakage protection and overload protection for the industrial frequency power supply. When there is a power failure such as electric shock or circuit leakage current exceeding the specified value, the leakage circuit breaker can generate tripping and other protection actions in a very short time, automatically cut off the power supply, ensure personal safety, and prevent accidents caused by equipment leakage. Leakage circuit breakers have overload and short-circuit prote...

AI Technical Summary

Problems solved by technology

However, the scheme of this utility model is too complicated, the cost is high, and the verification of life and reliability cannot be carried out

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