ZN63(VS1)-12KV indoor vacuum circuit breaker

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序号  名 称  名称 数据
1 Rated voltage  KV 12
2 Rated frequency Hz 50
3 Rated insulation level 1min power frequency withstand voltage kA On the ground / between phases42/48
Lightning impulse withstand voltage (peak value) kA On the ground / between phases75/85
4 4 Rated short-circuit breaking current kA 20/25/31.5/40
5 Rated current A 630/1250/1600/2500
6 Rated short-time withstand current (effective value) kA 20/25/31.5/40
7 Rated peak withstand current (peak value) kA 50/63/80/100
8 Rated short-circuit making current (peak value) kA 50/63/80/100
9 Rated short-circuit current duration s 4
10 Mechanical life times 20000
11 Secondary circuit power frequency withstand voltage (1 min) V 2000
12 Rated operating sequence   Divide-t-Combine Divide-t1-Combine Divide
注:20kA、25kA、31.5kA t=0.3s t1 =180s; 40kA t=180s t1 =180s  



VS1 -12 indoor high-voltage vacuum circuit breaker is an indoor switchgear of a three-phase AC 50Hz rated voltage of 12KV power system, used as power grid equipment, industrial and mining enterprises
Protection and control unit for industrial power equipment. It is suitable for places requiring frequent operation under rated working current, or multiple switching and interrupting short-circuit currents.
The circuit breaker adopts an integrated design of the operating mechanism and the circuit breaker body, which can be used as a fixed installation unit, or can be equipped with a dedicated propulsion mechanism to form a handcart unit.


Shape and installation dimensions


Product model and meaning