The shunt tripper can control the disconnection operation of the circuit breaker from a distance and quickly, ensure the safety of the load side equipment and personal safety of the circuit breaker, and can be used as an actuator for the protection of electrical appliances such as leakage circuit breakers. The company's main products involve FT30, 34, 38, 39 and other series, which are suitable for domestic circuit breaker manufacturers such as Changkai, Chint, Liangxin, Delixi, and Noyak.