| Parameter name | Unit | Value |
| Rated voltage | kV | 40.5 |
| Rated normal current | A | 1250 |
| Rated frequency | Hz | 50 |
| Rated short-time (1 min) frequency withstand voltage | kA | 70 |
| Rated lightning impulse withstand voltage | kA | |
| Rated short-time withstand current | kA | 25 |
| Rated short-circuit continuous time | S | 4 |
| Rated peak withstand current | kA | 63 |
| Rated short-circuit making current | kA | 63 |
| Rated active load breaking current | A | 1250 |
| Rated loop-locked breaking current | A | 1250 |
| Rated electric cable be charged breaking current | A | 10 |
| Mechanical life | 10000 | |
| Contact automatic | N | 80±30 |
| Force required to hold contacts open at full stroke | N | 140±40 |
| Rated contact pressure time-limit loop resistive | µΩ | ≤30 |
| Contact-wear allowance thickness | Mm | 3 |
| Internal gas pressure | Pa | ≤1.33×10-3 |
| Shelf life | 20 |