Product Overview
The ZW32-40.5 outdoor high-voltage vacuum circuit breaker features a uniquely designed
permanent magnet mechanism and a highly reliable intelligent controller. This device is
primarily used in medium-voltage overhead power grids for switching load currents, overload
currents, and short-circuit currents. It also supports 0 to 3 automatic reclosing attempts.
Main technical parameters
| No. | Item | Unit | Data |
| 1 | Rated Voltage | KV | 33 |
| 2 | Rated Voltage | Hz | 50or60 |
| 3 | Rated Current | A | 1250/1600 |
| 4 | Rated Short-circuit Breaking Current | KA | 31.5 |
| 5 | Rated Peak Withstand Current | KA | 80 |
| 6 | 4s Short-time Withstand Current | KA | 31.5 |
| 7 | Rated Short-circuit Making Current (Peak Value) | KA | 80 |
| 8 | Mechanical Endurance | Times | 10000 |
| 9 | Breaking Cycles at Rated Short-circuit Breaking Current | Times | 30 |
| 10 | 1min Power Frequency Withstand Voltage (Wet/Dry) | KV | 70/80 |
| 11 | Lightning Impulse Withstand Voltage (Peak Value) | KV | 170 |
| 12 | 1min Power Frequency Withstand Voltage for Secondary Circuit | KV | 2 |
| 13 | Control Voltage of Permanent Magnet Mechanism | V | DC220 |
| 14 | Rated Operating Cycle | O-0.1s-CO-3s-CO-6s-CO-60s Recovery |
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