EVN-12 Indoor Vacuum Circuit Breaker
The EVN-12 is the latest generation 12kV indoor vacuum circuit breaker independently developed by NAIJI Electric. Features solid-sealed poles with miniaturized ultra-low resistance vacuum arc chambers cast in epoxy resin. M2-E2-C2 performance level with 30,000-cycle mechanical life.
Caracteristiques Principales
- 12kV rated voltage, up to 5000A rated current
- Up to 50kA short-circuit breaking capacity
- Mechanical life: 30,000 operations
- M2-E2-C2 performance level (GB & IEC)
- Solid-sealed poles with ultra-low resistance vacuum chambers
- Convection ventilation for reduced temperature rise
- Silver-plated main conductors for lower contact resistance
- Modular spring mechanism — maintenance-free with self-lubricating bearings
- Oil buffer with optimized cam curve — reduced rebound
Specifications Techniques
| Rated Voltage | 12 kV |
| Rated Current | Up to 5000 A |
| Rated Short-Circuit Breaking Current | 50 kA |
| Mechanical Life | 30,000 operations |
| Performance Level | M2-E2-C2 (GB & IEC) |
| Insulation | Epoxy resin solid-sealed poles |
| Cooling | Convection ventilation |
| Operating Mechanism | Modular spring mechanism |
Applications
Conformite aux Normes
Produits Associes
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VN2-24E Indoor Vacuum Circuit Breaker (24kV)
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VN1-40.5E Indoor Vacuum Circuit Breaker (40.5kV)
The VN1-40.5E is a 40.5kV indoor vacuum circuit breaker for 36kV and 40.5kV power networks. Offers the highest voltage class in the VN series with 20,000 mechanical operations life and up to 3150A rated current.
Questions Frequentes
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