1[ARC EXTINGUISH] DC arc extinguishing is more difficult than AC, and the DC circuit breaker has a magnetic system for auxiliary arc extinguishing.2[PROTECTIVE FUNCTION] Circuit breakers are primarily used to ensure power distribution facilities away from overload and short circuit damage, as well as for control and isolation.3[FAST DISCONNECT] The electromagnetic decoupling system can decouple immediately when the circuit is short circuited to ensure the safety of the circuit.4[EASY INSTALLATION] This AC DC circuit breaker is easy to install on any places, with simple modular structure and 35mm DIN rail installation way.5[WIDE APPLICATION] Circuit breakers are widely used in solar panel grid connected systems, scenery complementary systems and other DC circuit systems.