CM3Z plastic shell circuit breaker (hereinafter referred to as circuit breaker) is a CM3 series intelligent product launched by our company. The circuit breaker includes There are five shell frames of 100A, 250A, 400A, 630A, and 800A, with currents ranging from 12.5A to 800A. CM3ZL is integrated with residual current protection by CM3Z circuit breaker Protection function, with four shell frames of 100A, 250A, 400A, and 800A, with current ranging from 40A to 800A and residual current ranging from 30mA to 1000mA.