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BackHome > Products > Vacuum circuit breaker
Vacuum circuit breakerZW8-12 outdoor high voltage vacuum circuit breaker
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  • Specifications
  • Technical

ZW8-12 series adopts vacuum interrupter, air insulation, and electric spring operating mechanism, which make the product have strong arc extinguishing ability, high short-circuit breaking times, no fire and explosion hazard, convenient operation, and excellent performance. Product with strong practicability.

The overall structure of this product adopts a three-phase common box type, with casing inlet and outlet lines, dry coal air in the box, and an electric spring operating mechanism arranged on the side of the box, which can be used reliably under severe environmental conditions.

The vacuum interrupter of this product adopts a ceramic shell, a cup-shaped longitudinal magnetic field contact structure, and a copper-named contact material, which has excellent short-circuit current capability of opening and closing.

The product is small in size, light in weight and beautiful in appearance. The vacuum interrupter and the insulating support sleeve are compact in design, and the outlet conductive rod is filled with silicone rubber, which can adapt to harsh weather conditions and dirty environments.

The ZW8-12/630-25 outdoor high-voltage vacuum circuit breaker is an AC 50Hz three-phase power system, which is mainly used to break and close the load current, no-load current and short-circuit current of the urban and urban 10KV power grid. It can also be used as a rural power grid and The sub-switch of the small power system is an updated product of the oil-free urban and rural power grids.

No.

      Item

  Unit

Data

1

Rated voltage

kV

12

2

Rated Current

A

630

3

Power frequency withstand voltage

kV

42/48

4

Lightning impulse withstand voltage (peak)

kV

75/85

5

Rated short-circuit breaking current（Effective value）

kV

25

6

Rated short-circuit making current (peak)

kV

50

7

Rated operating sequence


O-0.3s-CO-180S-CO 

8

Rated short-circuit breaking current breaking number

Times

30

9

Mechanical life

Times

10000

10

Rated operating voltage (closing/opening coil)

V

DC220/AC220

11

Allowable wear thickness of moving and static contacts

mm

3

12

Isolation fracture disconnection distance

mm

＞200

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