YFW1 series intelligent universal circuit breaker (hereinafter referred to as circuit breaker).suitable for AC 50Hz, rated voltage to AC690V and below, rated current from 200A to 6300Adistribution network, used to distribute power and protect lines and power equipment fromover, under voltage, short circuit, single-phase grounding and other faults. Circuit breaker hasintelligent protection function, select type protection is accurate, can improve the reliability otpower supply, avoid unnecessary power outage. At the same time with open communicationinterface, can be carried out "four remote" to meet the requirements of control center andautomation system. The pulse voltage of the circuit breaker is 8000V when the altitude is2000 meters, (different altitudes are corrected according to the standard, the maximum is notmore than 12000V). The circuit breaker without inteligent controller and sensor can be usedforisolation.

The circuit breaker complies with the standard GB/T14048.2 and lEC60947-2 "Low-voltageswitchgear and control equipment Part 2 Circuit breakers".