VG1-12 Indoor High-Voltage Vacuum Circuit BreakerIntelligent Medium-Voltage Breakers
The VG1-12 is a domestically leading, self-developed vacuum circuit breaker. It complies with GB/T1984, DL/T403, and IEC62271-100 standards for reliable global operation.
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Used in power plants, grids, metallurgy, petrochemicals and urban infrastructure. The main circuit in enclosed insulated cylinder, operating mechanism front-rear mounted. Proprietary spring mechanism is simple, reliable, durable.
Core Advantages & Features
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Serial InterchangeabilityHigh degree of serialization for strong interchangeability with mainstream products.
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Efficient Spring MechanismMature spring operating mechanism is simple structure, high efficiency, low loss, low noise.
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Modular Reliable DesignModular circuit board for easy replacement, self-locking connectors ensure reliable connections.
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Composite Insulation CoolingMain circuit uses a composite insulation structure within insulating cylinders for effective heat dissipation.
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Intelligent Monitoring OptionOptional intelligent components with an online monitoring expert diagnostic system.
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Technical Parameters
| Basic Parameters | |
|---|---|
| Rated voltage | 12 kV |
| Phase spacing | 210 mm, 275 mm |
| Cubicle dimensions | 800 mm, 1000 mm |
| Rated current | 630 A, 1250 A, 1600 A, 2000 A, 2500 A, 3150 A, 4000 A, 5000 A |
| Rated short-circuit breaking current (effective value) | 25 kA, 31.5 kA, 40 kA, 50 kA |
| Rated short-circuit making current (peak) | 63 kA, 80 kA, 100 kA, 125 kA |
| Rated power-frequency withstand voltage | 42 kV |
| Rated lightning impulse withstand voltage | 75 kV |
Rated short-circuit current breaking operations | 30 times |
| Mechanical life | 30000/10000 times (for 40 kA and above） |
Product Documents
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Product Brochure
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VG1 Series Indoor High-Voltage Vacuum Circuit Breaker
2025-09-02
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