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VS1-24 Withdrawable indoor VCB vacuum circuit breaker

Model: VS1-24


VS1-24 indoor high voltage vacuum circuit breaker applies to power system of rated voltage 24kv 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.

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


VS1-24 series of indoor high voltage vacuum circuit breaker with common insulated cylinder is three-phrase A.C. 50 Hz indoor power distribution equipment with the rated voltage of 24KV. It’ s used for protecting controlling the electrical equipment in the fields of industry and mining enterprise, power plants and substation.This type vacuum circuit breaker conforms to national standards and the stipulation of IEC standard, the capability reaches grade of M2-E2-C2.
The product adopts composite insulation way,spring charged operation and rod push mechanism,with the characteristics of small volume, compact design and reliable operation. It can easily match with the switchgear and meet the “Five Preventions” demands.
This kind of vacuum circuit breaker can be used for many kinds of switchgear like KYN28-24(GZS1). This series of products include: VCB truck isolation truck and Fuse truck, etc.

Applying Ambient Conditions:

1. Ambient temperature: -10℃–+40℃
2. Ambient humidity: the average humidity of a day should be no more than 95%; the average humidity of a month should be no more than 90%;
3. Earthquake intensity: not exceed 8 degrees
4. Saturated vapor pressure: average pressure of a day should be no more than2. 2kPa,the average pressure of a month should be no more than 1.8kPa;
5.The height above sea level: less than 1000m;(not including special requirements)
6.1t should be installed in the places without fire, explosion, serious filth, chemical corrosion and violent VS1 ration.

No. Item Unit Data
1 Rated voltage KV 24
2 Rated current A 630 1250 1600 2000 2500 3150
3 Rated frequency Hz 50
4 Rated short-circuit breaking current KA 20 25 31.5
5 Rated short-circuit making current KA 50


63 80
6 Rated short time withstand current KA 20 25 31.5
7 Rated peak withstand current KA 50 63 80
8 1min power frequency withstand voltage KV 65
9 Rated lighting impulse withstand voltage KV 125
10 Rated short-circuit duration s 4
11 Rated operation sequence O-0.3s-CO-180s-CO
12 Maximum D.C component 50%

VS1-24 withdraw type indoor VD4 VCB drawing

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