Outdoor vacuum circuit breaker is an outdoor high voltage switch device of 11kV and three phase 50HZ. It is mainly used to open and close the load current, overload current and short circuit current of urban and rural grids and small-scale power supply system. Its overall structure is composed of one case. The three phase vacuum interrupters are placed in a metal case with phase to phase insulation and ground insulation by SMC material.
Air temperature: Maximum temperature: +85ºC; Minimum temperature:-45ºC
Humidity: Monthly average humidity 95%; Daily average humidity 90% .
Altitude above sea level: Maximum installation altitude: 2500m or more higher.
Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
No frequent violent shake
| Name | Unit | Data |
| Rated voltage | kV | 12 |
| Rated current | A | 630 |
| 1min P.F withstand voltage | kV | 42/48 |
| Lightning impulse withstand voltage peak | kV | 75/85 |
| Rated short-circuit breaking current | kA | 16/20/25 |
| Rated short-circuit making current (peak) | kA | 40/50/63 |
| Rated short-time withstand current | kA | 16/20/25 |
| Rated withstand current (peak) | kA | 40/50/63 |
| Rated short-circuit breaking time | times | 30 |
| Mechanical life | times | 10000 |
