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BackHome > Products > Vacuum circuit breaker

Vacuum circuit breakerZW8-12 outdoor high voltage vacuum circuit breaker

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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