VG1-40.5 Indoor High-Voltage Vacuum Circuit BreakerIntelligent Medium-Voltage Breakers
The VG1-40.5 is a vacuum circuit breaker developed to a leading domestic level, fully compliant with GB/T1984, DL/T403, and IEC62271-100 for stable, global operation.
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It is suitable for power plants, power grids, metallurgy, petrochemicals, and urban infrastructure. The main circuit is enclosed in a three-phase insulated cylinder, and the self-developed spring mechanism is reliable and features comprehensive interlocks.
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, 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 for good 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 | 40.5 kV |
| Phase spacing | 280 mm, 300 mm, 440 mm |
| Cubicle dimensions | 1200 mm, 1400 mm, 1680 mm |
| Rated current | 630 A, 1250 A, 1600 A, 2000 A, 2500 A, 3150 A, 4000 A |
| Rated short-circuit breaking current (effective value) | 25 kA, 31.5 kA |
| Rated short-circuit making current (peak) | 63 kA, 80 kA |
| Rated power frequency withstand voltage | 95 kV |
| Rated lightning impulse withstand voltage | 185 kV |
Rated short-circuit current breaking operations | 30 times |
| Mechanical life | 10000 times |
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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