BBAC series intelligent air circuit breaker (hereinafter referred to as breaker), it is suitable for distribution network which is AC 50Hz, rated voltage up to 660V (690V) and below, 630A~6300A rated current. It is used in distribution of power and protecting circuit from overload, short circuit, undervoltage, single-phase grounding fault hazard. Circuit breaker with intelligent protection function and precise selective protection can improve the reliability of power supply, avoid unnecessary power outages. And it has an open communication interface, can carry out the "four remote", in order to meet requirements of the control center and the automation system. The circuit breaker pulse pressure is 8000V at an altitude of 2000 meters (different altitude correction according to the standard, the maximum is not more than 12000V).
