◆Use Conditions
Altitude: ≤2000m;
Earthquake tension: ≤8 class;
Ambient air temperature: -30℃~+40℃;
Relative humidity: daily average ≤95%, monthly average ≤90%;
It is not suitable for installations where there is frequent and severe vibration, water vapor, gas, chemical corrosive deposits, salt spray, dust and dirt, and fire and explosion hazard installations that obviously affect the performance of the mechanism.
◆Main Technical Parameters
| NO. | Items | Unit | Value |
| 1 | Rated voltage | kV | 12 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Rated current | A | 1250 |
| 4 | Rated short time withstand current | kA | 20, 25 |
| 5 | Rated peak withstand current | kA | 63 |
| 6 | Rated short circuit duration | S | 2 |
| 7 | Rated short circuit making current | kA | 63 |
| 8 | Theoretical operation | Times | 10000 |
