12kv /24kv 630a/1250a Vacuum Circuit breaker VS1(ZN63)

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Quick Details
Place of Origin:
Zhejiang, China (Mainland)
Brand Name:
Model Number:
Poles Number:
Rated voltage:
Rated current:
Rated short citcuit breaking current:
Ratede shotr-circuit close current:
Rated peak withstand current:
4S Rated withstand current:
Rated operating sequence:
Mechanical life:
Contact stroke:
Closing time:
Supply Ability
Supply Ability:
100 Set/Sets per Day
Packaging & Delivery
Packaging Details
wooden box package
Ningbo Port
Lead Time :
Delivery within 15 days after payment
Product Description

ZN63(VS1)-12 medium voltage vacuum circuit breaker


Adopt solid insulation structure, use of advanced solid epoxy sealing technology, the first time, the vacuum interrupter. A leading electrical circuit. insulation and other support to become an integrated combination of solid seal pole. Successfully from a fundamental solution of the vacuum breaker gas environment, tolerance issues, make it more broad. Integrated solid-pole closure of the fluent use of a self-ventilation technology, cleverly solved the structure of solid insulation caused by heat dissipation.


Environmental conditions:

1.Ambient temperature: not higher than +40 °C, not less than -40°C


2. Altitude: not exceed 2000m.


3. Relative humidity: daily average of not more than 95%, month average of not more than 90%.


saturated vapor pressure daily average of not more than 2.2 × 103MPa, month average not more than 1.8 × 103MPa.


4. Earthquake intensity: not more than eight.


5. No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration



Main Technical Param
1Rated voltageKV12
2Max. voltageKV12
3Rated currentA630/1250/2000A4000
4Rated short circuit breaking currentKA20/25/31.5/40
5Rated short circuit making currentKA50/63/80/100
6Rated peak withstand currentKA50/63/80/100
74S Rated withstand currentKA20/25/31.5/40
8Rated insulation levelPower frequency voltage(when losing a circuit)KVDreaker 42
Impulse withstand voltage(when losing a circuit)Dreaker 75
9Rated operating sequence OC-0.3s-CO-180S-CO
10Mechanical lifeTimes20000
11Rated short circuit  current breaking timeTimes50
12Rated close brake voltage of operating machnieV110,220
13Rated break brake voltage of operating machnieV110,220
14Contact strokemm11±1
15Exceed range(the compress length of contact sping)mm3.5±0.5
16Different period of three-phase break and close breakms≤2
17The jump time of contact close breakms≤2
18Average break speedm/s0.9~1.2
19Average closing speedm/s0.5~0.8
20Opening timeUbder max.operating voltageS≤0.05
Under min.operating voltage≤0.08
21Closing times0.1
22Resistance of each phase main loopμΩ≤40
23Contacts limit ersionmm3
















Packaging & Shipping


Work Shop


Company Information

Yufeng Electric Co., Ltd is located in China Electric City, Yueqing City, Zhejiang. It is founded in 2001 which integrates industrial manufacturing and exporting, mainly specialized in production of medium-high voltage Transmission and Distribution switchgear series. Main vacuum circuit breaker series: ZN63(VS1),ZN28,ZN85,VBI, side mounted(VBM7), permanent magnet SVM, ZW7fZW8,ZW32,ZW43 indoor and outdoor high voltage vacuum circuit breaker series, and VS1, VBI, side-mounted (VBM7), permanent magnet(SVM), CT19, CT23, CTB and other handcart series, PT series, Isolator handcart fuse, arrester...
It covers an area of 10000 square meters, 320 existing staff, 25 technicians, and total assets of RMB 120 million. We adhere to high startng point, high quality, high level of ’Three high” strategy and excellent system, which help us to develop steadily.
Passed IS09001:2000, with good quality, best price and ontime delivery, Yufeng gained praise in both domestic and international market. We also gained the super star company by our government and clients.
For the future, Yufeng will never stop to pursue innovation and refinement as to create values for customersand the society at large, and strives to make it into a world-famous enterprise with modeled operation, scientific management and internationalized brand.





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