This vacuum circuit breaker is engineered for 12kV indoor switchgear systems. It serves as a robust protection and control unit for power grid infrastructure and industrial mining enterprises, capable of handling frequent operations and multiple short-circuit current interruptions.
| Parameter | Unit | Data |
|---|---|---|
| Rated voltage | - | 12 |
| Max working voltage | kv | 12 |
| Rated current | A | 630 / 1250 |
| Rated short-circuit break current | kA | 20/25 |
| Mechanical life | times | 10000 |
| Breaking brake time (max voltage) | s | <0.05 |
| Breaking brake time (min voltage) | s | <0.08 |
| Closing brake time | s | <0.1 |
| Main circuit resistance | uΩ | <45 |
| Contact abrasion allowance | mm | 3 |