Huayi Electric Apparatus Group Co., Ltd.

Circuit Breaker

	Circuit Breaker

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Model Number

ZW37-40.5

ZW37-40.5 Outdoor AC High Voltage Vacuum Circuit Breaker is mainly used to break and close load current, over-load current and short-circuit current in outdoor 40.5kV three-phase alternating current 50Hz power system, also suitable for occasions with frequent operations.

Technical Specification/Parameter

Rated voltage: 40.5kV

Rated current: 630, 1250,1600,2000A

Rated short-circuit breaking current: 20/25/31.5kA

Rated short-circuit making current: 50/63/80kA

Rated short-time withstand current: 20/25/31.5kA

Rated peak withstand current: 50/63/80kA

Mechanical duration: 3000 Times

Breaking time of rated short-circuit breaking current: 30 Times

1 min P.F. withstand voltage-dry (phase to phase, to earth; across open contacts): 42/49kV

1 min P.F. withstand voltage-wet: 34kV

Lightning implse withstand voltage peak (phase to phase, to earth; across open contacts): 75/85kV

Abrasions thickness of contacts: 3 mm

Net weight: 70 kg