ZW20-12 Outdoor Vacuum Circuit Breaker
The ZW20-12 is a three-phase common-box type outdoor vacuum circuit breaker with longitudinal magnetic field arc extinguishing and SF6 gas insulation. Maintenance-free design with stable breaking performance, no combustion or explosion risk.
Caracteristiques Principales
- 12kV rated voltage, SF6 gas insulated
- Longitudinal magnetic field vacuum arc extinguishing
- Three-phase common-box structure
- Mechanical life: 10,000 operations
- Silicone rubber / epoxy resin bushings
- Power frequency withstand: 42kV (phase), 48kV (gap)
- Spring-operated mechanism — compact and lightweight
- Compatible with FTU for automated distribution
Specifications Techniques
| Rated Voltage | 12 kV |
| Rated Current | 630 A |
| Insulation Medium | SF6 gas (zero gauge pressure) |
| Arc Extinguishing | Longitudinal magnetic field vacuum |
| Mechanical Life | 10,000 operations |
| Power Frequency Withstand | 42 kV (phase) / 48 kV (gap) |
| Operating Mechanism | Spring-operated |
| Temperature Range | -25°C to +40°C |
Applications
Conformite aux Normes
Produits Associes
ZW32-12 Outdoor Vacuum Circuit Breaker
The ZW32-12 is a pole-mounted outdoor vacuum circuit breaker rated at 12kV, widely used in rural and urban power distribution networks. Features a compact spring-operated mechanism for reliable switching operations.
ZW32-24 Outdoor Vacuum Circuit Breaker (24kV)
The ZW32-24 is a 24kV outdoor vacuum circuit breaker with spring operating mechanism, rated at 630A with short-circuit breaking capacity up to 25kA. Widely used in hydropower stations, industrial substations, renewable energy grid connections, and rural/urban distribution networks. Control voltage options include 110VDC, 220VDC, and 220VAC. Fully compliant with IEC 62271-100.
SPV-12 Outdoor Vacuum Circuit Breaker (12kV)
The SPV-12 is a 12kV oil-free, SF6-free, maintenance-free outdoor vacuum circuit breaker pioneered by NAIJI Electric. Features three-phase pillar-type structure with longitudinal magnetic field vacuum arc extinguishing technology and solid epoxy resin insulation (APG vacuum casting). The spiral groove contacts produce a rotating magnetic field, accelerating ionized particle diffusion and reducing arc energy. Special alloy shielding rapidly absorbs arc energy for low heat, short extinguishing time, and long service life. Imported outdoor-grade epoxy resin with integral vacuum casting — proven by 20+ years of outdoor operation with no surface carbonization. Every unit X-ray inspected. Weighs only 2/3 of comparable products.
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