Vacuum Circuit Breaker ZN7
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Product details
Vacuum Circuit Breaker ZN7
The ZN7 series vacuum circuit breaker is suitable for 50 Hz AC power systems with a rated voltage of 1140 V (660 V) and below, and a rated current of 400 A and below. It is used as the main switch or branch switch in power supply systems, and is also suitable for infrequent starting of large-capacity motors. It is particularly suitable for integration with various protection devices to form distribution switches, especially for use in explosion-proof vacuum feeder switches in coal mines.
Specification
| Part Numbers | ZN7-400A/1.14KV | ZN7-400A/0.66KV | |
| Rated Current | A | 400 | 400 |
| Rated Voltage | kV | 1.14 | 0.66 |
| Limit Making Capacity | kA | 7.5 | 9 |
| Inherent Opening Time | ms | ≦30 | ≦30 |
| Closing Time | ms | ≦100 | ≦100 |
| Closing Bounce Time | ms | ≦2 | ≦2 |
| Mechanical Life | Times | 20,000 | 20,000 |
| Electric Life | Times | 3,000 | 3,000 |
| Closing Voltage | V (AC) | 127 | 127 |
| Under Voltage, Shunt Release DC Supply | V | 48 | 48 |
| Closing Power | W (transient) | 1152 | 1152 |
| Switching Power | W | 31 | 31 |
| Under Voltage Power | W | 5 | 5 |
| Auxiliary Switch | - | 4NO 4NC | 4NO 4NC |
| Auxiliary Contact Capacity | - | Ue: AC380V, Ie: 10A | Ue: AC380V, Ie: 10A |
| Weight | Kg | 18 | 18 |
Dimensions
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