A high speed whip type air switch attachment used to interrupt transformer magnetizing and line charging current. It can be applied on vertical break and side break switches in both standard and slant style configurations.
Transformer Magnetizing Current Interrupting Capability *
| Voltage (kV) | MVA |
| 15.5 - 72.5 | 70 |
| 123 | 100 |
| 145 | 150 |
| 170 | 200 |
| 245 | 300 |
*Based on 1% excitation current
Line Charging Current Interrupting Capability **
| Voltage (kV) | Amp | Miles |
| 15.5 - 72.5 | 20 | 70 |
| 123 | 15 | 50 |
| 145 | 10 | 30 |
| 170 | 7 | 20 |
**Interrupting ratings may vary due to system and environmental conditions
