Model Number

ZW43A-12

ZW43A-12model Outdoor Pole-mounted High Voltage Vacuum Circuit breaker is mainly used to break and close load current overload current and short-circuit current in substation, industrial and mining establishments, and urban rural distribution network as a protection and control equipment. Especially suitable for occasions with frequent operating and automatic urban distribution network.

Technical Specification/Parameter


Rated voltage: 12KV

1min P.F. withstand voltage(dry/wet): 42(gap 49)/30KV

Lightning impulse withstand voltage (peak): 75(gap 85)KV

Rated current: 630A

Rated short-circuit breaking current: 20KA

Rated short-circuit closing current(peak): 50KA

4S short-time withstand current (peak): 20KA

Rated withstand current(peak): 30KA

Rated operating sequence: break-0.3s-close-break-180s-close-break

Rated short-circuit breaking current breaking times: 50Times

Mechanical lifetime: 10000Times

Rated operating voltage: 220(DC,AC)V

Sub-loop rated voltage: 220(DC,AC)V

Over current tripper release rated current: 5A

Current transformer ratio: 200/5; 400/5; 600/5 (protection: 3; measurement: 0.5)

Operating mode: spring (manual/electric)

Outline dimension (width*length*height): 700*222*642

Weight: 60kg