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hv vacuum circuit breaker

VS1-12 ZN63 Withdrawable Indoor Vacuum Circuit Breaker

Model: VS1-12


VS1-12 Indoor High Voltage Vacuum Circuit Breaker is three-phase AC 50Hz, rated voltage of 12KV indoor device. For industrial and mining enterprises, power plants and substations as electrical equipment control and protection purposes, and for frequent operation of the place.

Outstanding Features Make You Stand Out

We play extreme caution to quality and utmost attention to detail, which makes our products so perfect.

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    Modularization of Functional Unit

    The main circuit unit and running product are coherent in interchangeability.

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    Strong Versatility

    The operating mechanism can be separated from the whole circuit breaker for convenient and easy maintenance and fix.

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    Low Maintenance

    No need of adjustment of driving unit; long-acting lubricating, reliable corrosion resistance, and high mechanical stability make low maintenance possible.

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    Long-acting Lubricating

    We apply German lubricating grease boasting lower starting torsion, stronger anti-aging and oxidation resistance.

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    Strong Corrosion Resistance

    Utilizing zinc-nickel alloy plating line with a German process to make sure our corrosion resistance is 5 to 7 times stronger than ordinary zinc-plating process.

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    Strong Expandability

    This product can easily realize diverse arrangements and combinations to meet functions like expandability and control.

  • Product Detail
  • Technical Parameters
  • Technical Drawings

VS1-12 indoor high voltage vacuum circuit breaker applies to power system of rated voltage 12kv as a protective and control unit for power grid equipment and industrial power equipment. It can equip with KYN28(GZS1), XGN, GG-1A and other types of switchgear panels. Related products: isolated handcart, fuse handcart and voltage transformer handcart.  

No. Item Unit Data
1 Rated voltage kV 12
2 Rated frequency Hz 50
3 Rated insulation level 1min power frequency withstand voltage KV 42
Rated lightning impulse withstand voltage KV 75
4 Rated current A 630 1000 1250 1600 2000 2500 3150 4000
5 Rated short-circuit breaking current

Rated short-time withstand current (virtual value)

kA 20 20 20
25 25 25 25
31.5 31.5 31.5 31.5 31.5
40 40 40 40 40 40
6 Rated short circuit making current Dynamic stability rated current kA 50 50 50
63 63 63 63
80 80 80 80 80
100 100 100 100 100 100
7 Rated short-circuit breaking current breaking time Times  

(above 40KA)

8 Rated short-circuit duration S 4
9 Rated operation sequence O-0. 3s-CO-180s-CO,O-180s-CO-180s-CO(above 40kA)
10 Mechanical life times 30000
11 Rated breaking current of single capacitor bank A 630
12 Rated breaking current of back

to back capacitor bank

A 400
13 Maximum D.C componen                   5 0 %

VS1-12 ZN63 withdraw type Vacuum Circuit Breaker drawing

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