Outdoor Vacuum Circuit Breaker, ZW43-12/24F
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The outdoor vacuum circuit breaker is a switch device designed for three phase AC 50Hz outdoor power distribution network systems with rated voltage of 12/24kV, mainly used for breaking and closing load current, overload current and short-circuit current.
These outdoor vacuum circuit breakers are suited to protect and control of electrical power in substations, industrial and mining enterprises, cities and rural areas networks where frequent operations are required.
Technical Parameters
| Item | Unit | Parameters | |
| Rated voltage | kV | 12 | 24 |
| Rated frequency | Hz | 50 | |
| Rated current | A | 630 | 630 |
| Rated short-circuit breaking current | kA | 20, 25 | 20,25,31.5 |
| Rated peak withstand current | kA | 50, 63 | 50,63,80 |
| Rated short-time withstand current | kA | 20, 25 | 20,25,31.5 |
| Rated short-circuit making current(peak) | kA | 50, 63 | 50,63,80 |
| Mechanical endurance | Times | 10000 | |
| Power frequency withstand voltage(1min)(dry/wet) | kV | 42/48 | 65/79 |
| Lightning impulse withstand voltage(peak) | kV | 75/85 | 125/145 |
Circuit breaker specifications
| Item | Unit | Parameters | |
| Rated voltage | kV | 12 | 24 |
| Rated current | A | 630, 1250 | 630, 1250 |
| Rated frequency | Hz | 50 | |
| Power frequency withstand voltage (dry) | kV | 42/48 | 65/79 |
| Lightning impulse withstand voltage(peak) | kV | 75/85 | 125/145 |
| Rated short-circuit breaking current | kA | 20，25 | 20,25,31.5 |
| Rated short-circuit making current(peak) | kA | 50，63 | 50,63,80 |
| Rated peak withstand current | kA | 20，25 | 20,25,31.5 |
| Short-time withstand current(4S) | kA | 50，63 | 50,63,80 |
| Rated operating sequence | C-0.3s-CO-180s-OC | ||
| Mechanical endurance | times | 10000 | |
- 12kV
- 24kV
- 24kV
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