Huayi Electric Apparatus Group Co., Ltd.

Circuit Breaker

	Vacuum Circuit Breaker

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Model Number

ZW20A-12/630-20

ZW20A-12 Outdoor AC High Voltage Vacuum Circuit Breaker is a kind of outdoor distribution equipment, which is used to break and close the load current, over-load current and short-circuit current in 12kV, three-phase AC 50Hz power system. Suitable for substations, industrial and mining establishments, rural power network and occasions with frequent operation to protect and control.

Technical Specification/Parameter

Rated voltage: 12KV

Rated frequency: 50Hz

1min P.F. withstand voltage: between phases,to earth 42KV,gaps 49KV

Lightning impulse withstand voltage peak,phase to phase/to earth/gaps: 75/75/85KV

Rated current: 630/1000A

Rated short-circuit breaking current: 12.5/16/20/25KA

Rated short-circuit closing current peak: 31.5/40/50/63KA

4s rated short-time withstand current: 12.5/16/20/25KA

Rated withstand current peak: 31.5/40/50/63KA

Rated short-circuit breaking current breaking times: 30Times

Mechanical lifetime: 10000Times

Rated short circuit breaking current break times: 30 Times

Secondary loop 1min P.F.withstand voltage: 2KV

SF6 rated air pressure:

Net weight: 140kg