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Compare vacuum and SF6 circuit breakers by voltage, installation, maintenance, and application to select the right breaker for your project.
High Voltage Circuit Breakers
Electric Type
Normal Type Circuit Breaker
Vacuum
Fixed
MCCB
| Availability: | |
|---|---|
| Quantity: | |
| NO. | ITEM | UNIT | VALUE |
| 1 | Rated voltage | kV | 40.5 |
| 2 | Rated current | A | 1250/1600 |
| 3 | Rated frequency | Hz | 50 or 60 |
| 4 | Power frequency withstand voltage 1 minute (wet) (dry) phase-to-phase, phase-to-ground/break | kV | 80 95/95 |
| 5 | Lightning impulse withstand current (peak) phase-to-phase, phase-to-ground/break | kV | 185 |
| 6 | Rated short-circuit breaking current | kA | 25/31.5 |
| 7 | Rated short-circuit making current (peak) | kA | 63/80 |
| 8 | Rated peak withstand current | kA | 63/80 |
| 9 | 4s short-time withstand current | kA | 25/31.5 |
| 10 | Rated operating cycles | open - 0.1s - close/open -3s - close/open - 6sclose/open - 60s restore | |
| 11 | Rated number of short-circuit current breaking | times | 30 |
| 12 | Mechanical life | times | 10000 |
| 13 | Mechanism control voltage | V | AC/DC220 |
| 14 | Secondary circuit 1 minute power frequency withstand voltage | KV | 2 |
| NO. | ITEM | UNIT | VALUE |
| 1 | Contact Opening Distance | mm | 16±1 |
| 2 | Contact Overtravel | mm | 4±0.5 |
| 3 | Breaking Speed | m/s | 1.4-1.8 |
| 4 | Closing Speed | m/s | 0.4-0.8 |
| 5 | Contact Bounce Time during Closing | ms | ≤5 |
| 6 | Phase-to-Phase Distance | mm | 600±2 |
| 7 | Different Phases' Opening and Closing Asynchrony | ms | ≤2 |
| 8 | Conductive Circuit Resistance for Each Phase | μΩ | <80 |
| 9 | Closing Time | ms | 25~45 |
| 10 | Opening Time | ms | 20~45 |
| 11 | Weight | Kg | Approx 450 |