1.FUNCTIONS: Used to protect power distribution facilities from overload and short-circuit damage, and can also be used for control and isolation. 2.ARC EXTINGUISHING: This DC circuit breaker has a magnetic system to assist arc extinguishing. 3.QUALITY: The shell is made of high quality material, which is sturdy and durable and does not fear sparks, and it adopts all-silver contacts with high conductive efficiency. 4.APPLICATION: Used in battery power systems, solar photovoltaic systems, RV, electric moped, or other DC systems. 5.Extinguishing DC arcs poses a greater challenge compared to AC arcs. ensuring improved safety and reliability.