Introduction
SFW1 series air circuit breakers (hereinafter referred to as Circuit Breaker) are applicable to power distribution networks with current of AC 50Hz, rated voltage of 690V and below, and rated current of 200A-6300A, and it is used to distribute electric energy and protect lines and power equipment from overload, under-voltage, short circuit, singlephase grounding and other troubles. Elecnova circuit breaker has intelligent protection function and selective protection precision, which can improve the reliability of power supply and avoid unnecessary power failure.