Vacuum Circuit Breaker with Permanent Magnetic Actuator (ZN3A-12 )
This series of high-voltage permanent magnet vacuum switches uses high-quality circuit breaker switch tubes, combined with advanced and reliable bistable permanent magnet mechanisms and intelligent controllers. It features anti-bounce functionality, low closing and opening current, and can also achieve power-off opening. The switching speed is fast, the opening distance and stroke are large, and it has minimal bounce with stable synchronism, providing excellent switching performance. The insulation components are made from epoxy resin casting, and the frame features a metal structure that is both rational and aesthetically pleasing, with stable performance. It is suitable for switching large-capacity capacitor bank loads, ensuring safety and reliability.
It features anti-bounce functionality and low closing and opening current.
It can achieve power-off opening. The switching speed is fast.
Large clearance between open contacts, big stroke, minimal bounce, and stable synchronism.
| Tech. parameters | Model | ZN3A-630/12 | ZN3A-800/12 | ZN3A-1000/12 | ZN3A-1250/12 |
| Rated voltage of main loop | (KV) | 12 | 12 | 12 | 12 |
| Rated current of main loop | (A) | 630 | 800 | 1000 | 1250 |
| Rated frequency | (HZ) | 50 | 50 | 50 | 50 |
| Rated short-circuit breaking current | (KA) | 12.5/16/20 | 12.5/16/20 | 12.5/16/20 | 12.5/16/20 |
| Rated short-circuit making current | (KA) | 31.5 | 31.5 | 31.5 | 31.5 |
| Rated short-circuit withstand current | (KA) | 2.5/16/20 | 2.5/16/20 | 2.5/16/20 | 2.5/16/20 |
| Rated duration of short-circuit | (S) | 3 | 3 | 3 | 3 |
| Short circuit breaking times | (times) | 25 | 25 | 25 | 25 |
| Mechanical life of the permanent magnet mechanism | (10,000 times) | 10 | 10 | 10 | 10 |
| Power-frequency withstand voltage of main loop(fracture) | (KV) | 42 | 42 | 42 | 42 |
| Phase-phase/phase-ground power frequency withstand voltage | (KV) | 42 | 42 | 42 | 42 |
| Rated lightning impulse withstand voltage | (KV) | 75 | 75 | 75 | 75 |
| Terminal pressure | (mm) | >200 | >200 | >200 | >200 |
| Clearance between open contacts | (mm) | 9±1 | 9±1 | 9±1 | 9±1 |
| Overtravel | (mm) | 2±0.5 | 2±0.5 | 2±0.5 | 2±0.5 |
| Main loop contacts resistance | (μΩ) | ≤100 | ≤100 | ≤100 | ≤100 |
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Tel：+86 15538537280
Email：lycnelectric@163.com
Add：No. 9 Duyu Street, Luolong District, Luoyang City, Henan Province
