| Item | Unit | Specification | ||||
| Rated Voltage | kV | 36 | 72.5 | 123 | 145 | |
| Rated Current | A | 630, 1250, 1600, 2000, 2500, 3150 | ||||
| Rated short withstand current and time | kA/s | 25~50 / 4 | ||||
| Rated perk/marking withstand current | kA | 63~125 | ||||
| Lightning impulse withstand voltage (1.2/50 μs) | To earth | kV | 200 | 325 | 500 | 650 |
| To phase | kV | 200 | 325 | 500 | 650 | |
| Across open DS | kV | 215 | 405 | 650 | 750 | |
| 1min power frequency withstand voltage | To earth | kV | 95 | 140 | 230 | 275 |
| To phase | kV | 95 | 140 | 230 | 275 | |
| Across open DS | kV | 118 | 180 | 300 | 315 | |
| Rated mechanical terminal load | Level of lateral load | N | 750 | 750 | 1500 | 1500 |
| Level of vertical load | N | 500 | 500 | 1000 | 1000 | |
| Vertical force | N | 750 | 750 | 1000 | 1000 | |
| Max. Manual operating moment | N.m | 200 | ||||
| Control voltage | V | AC 220, DC 110/220 | ||||
| Motor voltage | V | AC 220/380, DC 110/220 | ||||


It is used for the safe earthing of high voltage electrical equipment, such as busbars and transformers, to protect personnel and equipment during maintenance and in case of faults.
Operators must follow safety procedures, which include wearing appropriate personal protective equipment, ensuring the circuit is de-energized, and using proper locking and tagging procedures before maintenance.
Spare parts may include bulbs for indicating lamps, test lamps, and various components for manual or motorized operating mechanisms. Accessories could include voltage indicators, control devices, and interlocking coils.