Miniature Outdoor Vacuum Circuit Breakers 50Hz / 60Hz 12kv Vacuum Circuit Breaker
The ZW20-12F (M) outdoor high-voltage intelligent (permanent magnet) vacuum circuit breaker is a three-phase AC 50/60Hz switchgear with rated voltage of 12kV. Designed for breaking and closing load current, overload current, and short circuit current in power systems, it provides reliable protection and control for substations, industrial facilities, and urban/rural distribution networks.
This maintenance-free product features a sealed box structure that protects against environmental factors. When paired with a controller, it meets distribution automation system requirements and performs traditional recloser functions effectively. Available with either spring operating mechanism or permanent magnet operating mechanism for high reliability.
- Miniaturized design for compact installation
- Fully sealed inverted button structure with high anti-pollution level
- Novel, simple and reliable transmission mechanism
- Main components sealed in box for true maintenance-free operation
- Compatible with external voltage transformer and isolating switch installation
- Temperature range: -25℃ to +40℃ (daily average ≤35℃)
- Relative humidity: ≤95% daily average, ≤90% monthly average
- Maximum altitude: 2000m
- Clean environment free from excessive dust, corrosive gases, or salt spray
- Minimal vibration or ground motion
- Secondary system electromagnetic interference ≤1.6kV
| Parameter | Unit | Value |
|---|---|---|
| Power frequency withstand voltage (1min): interphase, ground / fracture | kV | 42/48 |
| Lightning impulse withstand voltage (peak) interphase, ground/fracture | kV | 75/85 |
| Secondary circuit 1min power frequency withstand voltage | kV | 2 |
| Net weight | kg | 140 (with isolation ≤170) |
| Contact opening | mm | 9±0.5 |
| Contact overtravel | mm | 3±0.5 |
| Opening speed | m/s | 1.2±0.2 |
| Closing speed | m/s | 0.6±0.2 |
| Bounce time of contact closing | ms | ≤2 |
| Conductive loop resistance of each phase | μΩ | ≤150 (with isolation ≤200) |
| Closing time | ms | ≤45 |
| Opening time | ms | ≤45 |
| Rated power of energy storage motor | W | >40 |
| Energy storage motor rated voltage | V | AC220 |
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.