Features 1、FUNCTION: This circuit breaker is used for protecting low voltage electrical system, for preventing damage caused by overload and short circuit 2、4500A BREAKING CAPACITY: This circuit breaker has 4 poles, with smoothly operation switch, the rated ultimate short circuit breaking capacity is 4500A 3、DIN RAIL MOUNTED: This circuit breaker features modular construction, and can mounted on DIN standard rail conveniently in distribution box, possess bistable locking clip 4、FLAME RETARDANT PA66 HOUSING: This circuit breaker is made of nylon Pa66 material, has excellent flame retardant and great safety performance 5、PURPOSE: This circuit breaker is mainly used for power distribution and office and residential buildings lighting protection Specification Item Type: Current Miniature Circuit Breaker Material: Pa66 Rated Current: 63A Rated Ultimate Short Circuit Breaking Capacity (Household Icn): 4500A Package List 1 x Current Miniature Circuit Breaker