Leakage circuit breakers without overcurrent protection are mainly used for indirect contact protection for people in distribution lines, andfor protection against fire hazards caused by ground fault currents, The RccB of in<30mA can also be used as a supplementary protectionmeasure when the electric shock protection measures fail, and an electromagnetic or electronic leakage tripping system is adopted.This product is suitable for non-professional use and does not require maintenance.Executive standard:GB16916.1EC61008