Application scenarios：
This circuit breaker is suitable for outdoor three-phase AC distribution systems with a rated voltage of 12kV and a rated frequency of 50Hz, for breaking and closing the load current, overload current and short-circuit current of the power system.
It is the main product for the protection and control of substations, industrial and mining enterprises, and urban and rural distribution networks.
It is particularly suitable for places with frequent operations and urban power grid automated distribution networks, and is the main product of the future integrated primary and secondary pole-mounted circuit breaker sets.
It complies with the requirements of standards such as GB/T 1984-2014 and DL/T 403-2017
Main technical parameters
Rated voltage: 12kv
Rated current: ≤630A
Rated short-circuit breaking current: ≤20KA
Rated short-circuit closing current: ≤50KA
Rated short-time withstand current/time: ≤20kA/4S
Level E2, Level M2, Level C2