The ID series leakage circuit breaker (electromagnetic leakage circuit breaker RCcB) without overcurrent protection is mainly used forindirect contact protection for people in distribution lines, and can also be used to protect against fire hazards caused by ground faulcurrents, The electromagnetic leakage circuit breaker with l A n<30mA can also be used as a supplementary protection measure when theelectric shock protection measures fail, and an electromagnetic or electronic leakage tripping system is adopted.Electromagnetic leakage circuit breakers are suitable for non-professional use and do not require maintenance.