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Ningbo Tianan (Group) Co.,Ltd.
Home ProductsHigh Voltage Circuit Breaker

12KV VS1 Medium Voltage Vacuum Circuit Breaker For HV Switchgear , 630A / 1250A

China Ningbo Tianan (Group) Co.,Ltd. certification
China Ningbo Tianan (Group) Co.,Ltd. certification
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12KV VS1 Medium Voltage Vacuum Circuit Breaker For HV Switchgear , 630A / 1250A

12KV VS1 Medium Voltage Vacuum Circuit Breaker For  HV Switchgear , 630A / 1250A
12KV VS1 Medium Voltage Vacuum Circuit Breaker For  HV Switchgear , 630A / 1250A

Large Image :  12KV VS1 Medium Voltage Vacuum Circuit Breaker For HV Switchgear , 630A / 1250A

Product Details:
Place of Origin: CHINA
Brand Name: TIANAN Electric
Model Number: ZN63(VS1)
Payment & Shipping Terms:
Minimum Order Quantity: 10sets
Price: Pending
Packaging Details: wooden cases
Delivery Time: 35 work days
Payment Terms: T/T, L/C, D/A, D/P
Supply Ability: 1000sets per year
Detailed Product Description
Rated Current: 630A / 1250A Rated Frequency: 50HZ
Rated Voltage: 12kV Mechanical Life Times: 20000
High Light:

high voltage vacuum circuit breaker


hv circuit breaker

12KV VS1 Indoor Medium Voltage Vacuum Circuit Breaker For HV Switchgear



VS1-12 Series Indoor AC HV Vacuum Circuit Breaker is an indoor HV switchgear of three AC 50Hz and rated voltage 12kV. Circuit breaker can be proceeded frequent operation and has many times breaking and rapid reclosure capacity, and has reliable interlock function. The device is front and back split charging structure, not only as a fixed installation unit but also match handcart unit with base plate cart.


1. Much technical advancement

  a. It adopt the latest effect vacuum arc principle, has strong breaking capacity, small volume closure at present.

  b. Extreme high Electrical endurance, breaking rated current time can arrive 20000 times, breaking short-circuit time is 50 times (40kV is 30 times, 50kA is 20 times).

  c. Vacuum arc-extinguishing chamber and operating mechanism arrange front and back. It reduces energy consumption and noise, and operation is much more reliable.


  d. Compact structure and small volume.

2. Excellent reliability on operation


a. Every detail considers fully domestic condition and requirements in standards during design.

  b. Every drive disk assemble part is made of high wear-resistant material mainly, and painted with fine lubrication. It can operate for a long time without additional lubrication and adjustment.

  c. Reliable interlock function to prevent various kinds of mis-operation effectively, it is much more safety for body.

3. Prominent economy on purchase

  a. Equipment purchased has high performance cost ratio.

  b. Extremely little maintenance cost greatly reduces the operating cost.

  c. Excellent common performance reduces design difficulty of the project.

  d. Steady technology, and without environment pollution.








1 Rated Voltage kV 12
2 Rated Short-time (1min) Power Frequency Withstand Voltage 42/48 (Open gap)
3 Rated Lightning Impulse Withstand Voltage (Peak) 75/85 (Open gap)
4 Rated Frequency Hz 50
5 Rated Current A 630

630 1250

1600 2000

2500 3150

1250 1600

2000 2500




6 Rated Short-circuit Breaking Current kA 20/25 31.5 40 50
7 Rated Short-time Withstand Current 20/25 31.5 40 50
8 Rated Short-circuit Duration s 4
9 Rated Peak Withstand Current kA 50/63 80 100 125
10 Rated Short-circuit Making Current 50/63 80 100 125
11 Secondary Circuit Power Frequency Withstand Current (1min) V 2000
12 Rated Single/ Back to Back Capacitor Bank Breaking Current A 630/400 (40kA is 800/400)
13 Rated Capacitor Bank Making Flashy Flow kA 12.5 (Frequency Not More Than 1000Hz)
14 Opening Time(Rated Voltage) ms 20~50
15 Closing Time (Rated Voltage) 35~70
16 Mechanical Life



20000 10000
18 Rated Short-circuit Current Breaking Times 50 30 20
19 Center Distance Between Phases mm 150, 210, 275

Contact Details
Ningbo Tianan (Group) Co.,Ltd.

Contact Person: Ms. Lian Huanhuan

Tel: +86-13858385873

Fax: 86-574-87911400

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