Yatai Electrical Group Co., Ltd.
Main products:Circuit breaker,AC contactor,Dual Power,meter,power transformer
Contact Us
  • Contact Person : Mr. Chen Power
  • Company Name : Yatai Electrical Group Co., Ltd.
  • Tel : 0086-577-89008222
  • Fax : 0086-577-89736535
  • Address : Zhejiang,Wenzhou,Liushi,Yueqing
  • Country/Region : China
  • Zip : 325604

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

Hot sales ZW8-12kv,ZW8-12G 12KV 1250A Series Outdoor Pole mounted High Voltage Vacuum Circuit Breaker outdoor VCB
Product Detailed
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
1Rated voltagekA6.31220
2Rated currentA16630(1250)50
3Rated short-circuit breaking currentkA1612.550
4Rated short circuit closed current (peak)kA6.331.520
5Rated peak withstand currentkA 31.5 
6Rated short-circuit withstand currentkA 12.5 
7Rated insulation levelpower frequency withstand voltages (dry) 42
Lightning impulse withstand voltage (peak)75
8Rated operating sequence O-0.3s-CO-180s-CO 
9Mechanical lifetimes1000
10Rated short-circuit breaking current breaking timestimes20
11Rated closing voltage of operation mechanismV110,220
12Rated opening voltage of operation mechanismV110,220
13Contact distancemm11±1
14Over stroke (compression length of contact spring)mm3 (+1,-0.3)
15Three phase closing and opening non-synchronismms≤2
16Contact closing bounce durationms≤2
17Average opening speedm/s1.0±0.2
18Average closing speedm/s0.7±0.15
19Opening timem/s15-50
20Closing timem/s25-50
21  Resistance of main loop for each phaseµΩ≤0.06
22Permitted 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

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