CKW65 series intelligent universal circuit breaker (hereinafter referred to as the circuit breaker) is applicable to the distribution network with AC 50Hz, 60Hz, rated working voltage of 400V~1140V and rated working current of 200A~8000A. It is used to distribute electric energy and protect lines from overload, short circuit, undervoltage, grounding (leakage) and other faults. The circuit breaker has the function of communication and intelligent protection, which can accurately realize the selective protection between the upper and lower levels, improve the reliability of power supply, and avoid unnecessary power failure. The circuit breaker also has the isolation function.

The circuit breaker with rated working current of 630A and below can also be used as overload, short circuit, undervoltage and ground fault protection of the electric motor in the AC 50Hz, 400V network, and can also be used for infrequent starting and stopping of the electric motor under normal conditions.

The circuit breaker complies with the GB/T 14048. 2 and IEC60947-2. (China standard)