The structure of the residual current circuit breaker for leakage protection is to add a sensing element (zero-sequence current transformer) that can detect leakage current in the original plastic case circuit breaker (or outside it) and leakage Buckle device. When the detection element receives a signal, the leakage release disconnects the main contact of the main circuit, which plays a protective role. The protection action current of the detection element and the leakage release is 30~100mA, and the protection action time is 0.03~0.1s.
