1)No.1 outdoor Vacuum circuit breaker factory 2)Export to many Asia and Africa countries 3)23 years' manufacture experience

 About us: 

       Our vacuum circuit breakers sell well all over the world, and are exported to Ethiopia, Malaysia, Thailand, Kenya, Mozambique, Congo, Rwanda, Pakistan, South Africa and so on. We have won a good reputation among customers at home and abroad. We will do our best to provide more high-quality products and services for you in the future! 

 

Trade Terms  

1.Payment: 1) 30% in advance, balanced 70% to be paid before dispatch.    2) L/C 

2.Port of loading: Ningbo,Wenzhou or Shanghai Port 

3.Discounts: offered based on order quantities 

4.Delivery time:10-30 days according to order quantities. 

 

Why Us? 

1. Quality assurance: All the products will go through lots of tests carefully before dispatch: Raw material check, Assemble test, Painting check, Nameplate check and routine tests. 

2. Competitive production capacity: monthly production more than 1500 sets 

3. Manufactuer's price: Factory direct sale, most competitive price. 

  

Technical Data 

 ZW8-12,ZW8-12G Series Outdoor High Vacuum Circuit Breaker  

1. Introduction 

ZW8-12 (G)-serial vacuum circuit breaker is rated voltage 12KV, three-phase AC 50Hz outdoor high voltage switchgear is mainly used to breaking Closing Rural power network , city network and small power system load current, overload current, short-circuit current . The product of the overall structure is box-type three-phase, three-phase vacuum interrupter placed in metal boxes, using SMC insulation material and inter-phase insulation and ground insulation, reliable performance, high dielectric strength.ZW8-12G is ZW8-12 a composite by circuit breaker and isolating switch, called the combination of circuit breakers, use for disconnect switchesThis series of operating mechanism for the CT23-type spring operating mechanism energy storage can be divided into two kinds of electric and manual. Mainly Technical parameters No Item Unit Data 6.3kA 12.5kA 20kA 1 Rated voltage kA 6.3 12 20 2 Rated current A 16 630(1250) 50 3 Rated short-circuit breaking current kA 16 12.5 50 4 Rated short circuit closed current (peak) kA 6.3 31.5 20 5 Rated peak withstand current kA   31.5   6 Rated short-circuit withstand current kA   12.5   7 Rated insulation level power frequency withstand voltages (dry)   42 Lightning impulse withstand voltage (peak) 75 8 Rated operating sequence   O-0.3s-CO-180s-CO  9 Mechanical life times 1000 10 Rated short-circuit breaking current breaking times times 20 11 Rated closing voltage of operation mechanism V 110,220 12 Rated opening voltage of operation mechanism V 110,220 13 Contact distance mm 11±1 14 Over stroke (compression length of contact spring) mm 3 (+1,-0.3) 15 Three phase closing and opening non-synchronism ms ≤2 16 Contact closing bounce duration ms ≤2 17 Average opening speed m/s 1.0±0.2 18 Average closing speed m/s 0.7±0.15 19 Opening time m/s 15-50 20 Closing time m/s 25-50 21   Resistance of main loop for each phase µΩ ≤0.06 22 Permitted accumulate wear-thickness of dynamic and static contact  mm ≤200

  

2. Other vacuum switches from our factory:

Hot sales ZW8-12kv,ZW8-12G 12KV 1250A Series Outdoor Pole mounted High Voltage Vacuum Circuit Breaker outdoor VCB