VSG-12 2000A Vacuum Circuit Breaker – Fixed Pole Handcart Indoor High Voltage Vacuum Circuit Breaker
VSG-12 2000A solid-pole vacuum circuit breaker is a high-performance indoor vacuum circuit breaker specially designed for 12kV-40.5kV power systems. It adopts advanced sealed pole (solid pole) design to provide excellent insulation performance and protection against harsh environmental factors. This handcart-type circuit breaker is perfectly compatible with KYN28A-12 switchgear, providing excellent reliability for power plants, industrial facilities and substations requiring frequent switching operations.
Product overview
VSG-12 2000A Vacuum Circuit Breaker is suitable for switching various loads and frequent operations in three-phase AC 50Hz, rated voltage 7.2kV-40.5kV power systems. It is widely used in industries, mines, enterprises, and power plants, and is fully compatible with center-mounted handcart switch cabinets such as KYN28A .
Main features and benefits
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Excellent safety and reliability : Advanced vacuum technology ensures fast and reliable arc extinguishing, significantly improving operational safety.
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Buried Electrode Design (Fixed Electrode) : Utilizes buried pole technology to enhance dielectric strength and provide superior protection against dust, moisture and contamination.
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Low Maintenance Design : Featuring a robust VSG spring operating mechanism ensuring fast changeover and minimal regular maintenance.
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Compact and Rugged : Designed for space-saving installation without compromising performance or safety.
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Long Mechanical Life : Designed for high cycle environments, with a mechanical life of up to 30,000 operations .
Technical specifications
| Technical parameters | unit | data |
| Rated voltage | Voltage | 12 |
| Rated current | one | 2000 (supports 630A–4000A) |
| Rated frequency | hertz | 50 |
| 1min PF pressure resistance | Voltage | 42 |
| Lightning impulse withstand voltage | Voltage | 75 |
| Short circuit breaking current | the | 20 / 25 / 31.5 / 40 / 50 |
| Rated short circuit duration | s | 4 |
| Mechanical life | operations | 30,000 |
Application environment
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Ambient temperature : -25°C to +40°C.
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Altitude : ≤1000 meters.
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Relative humidity : daily average ≤95%; monthly average ≤90%.
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Earthquake intensity : no more than 8 degrees.
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Environment : Suitable for places without fire, explosion, heavy pollution, or severe vibration.
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