| ITEM | UNIT | DATA |
| Rated voltage | kV | 12 |
| Rated current | A | 1250 |
| Rated frequency | Hz | 50 |
| Rated insulation level | Lightning impulse
withstand voltage | Phase to phase,
phase to earth | kV | 75 |
Insulating distance
of contact | 85 |
1min power
frequency
withstand voltage | Phase to phase,
phase to earth | 42 |
Insulating distance
of contact | 49 |
| 4s rated short time withstand current | kA | 31.5 |
| Rated short circuit break current | / | 31.5 |
| Rated peak value withstand current | / | 80 |
| Rated short circuit making current | / | 80 |
| Rated operation sequence | O-0.3s-CO-180s-CO |
| Break times of rated short circuit current | Times | 50 |
| Mechanical life | | 20000 |
| Break current of rated different phases earth fault | kA | 27.4 |
| Break current of rated single capacitor bank | A | 400 |
| Break current of rated back to back capacitor bank | | 400 |
| Rated open operation voltage/current | V/A | DC(AC)220/1.1 DC(AC)110/2.2 |
| Rated making operation voltage/current | DC(AC)220/1.1 DC(AC)110/2.2 |
| Release work current of rated transient over current | A | 5 |
| Rated circuit of secondary circuit | V | DC(AC)220 DC(AC)110 |
| Rated voltage of energy storage motor | DC(AC)220 DC(AC)110 |
| Rated output power of energy storage motor | W | 50 |
| Energy storage time | s | ≤10 |
1min power frequency withstand voltage
of secondary circuit | V | 2000 |
| Insulating distance of contact | mm | 11±1 |
| Overtravel of contact | 3+1 0 |
| Center distance between different poles | 210±1 |
| Allow abrasion thick of contact | 3 |
| Average opening speed | m/s | 1.2±0.2 |
| Average closing speed | 0.7±0.2 |
| Contact closing jump time | ms | ≤2 |
| Close/open synchronized of three phases | ≤2 |
| Main circuit resistance | μΩ | ≤55 |
| Opening time | ms | 25~60 |
| Closing time | 35~75 |
| Operation characteristic of operation mechanism | 65%~120% rated voltage | Reliable open/close |
| ≤30% rated voltage | Can not open |
