1. The contact opening distance is small, the contact opening distance of the 10KV vacuum circuit breaker is only about 10mm, the operating work of the operating mechanism is small, the mechanical part stroke is small, and the mechanical life is long.
2. arcing time is short, and has nothing to do with the size of the switch current, generally only half cycle.
3. After the arc is extinguished, the contact gap medium recovery speed is fast, and the fault performance of the near-breaking near-zone is better.
4. Because the amount of wear during the breaking current is small, the electrical life of the contact is long, the full capacity is interrupted for 30-50 times, the rated current is interrupted more than 5000 times, and the noise is small for frequent operation.
5. small in size and light in weight.
6. is suitable for breaking capacitive load current.
Because of its many advantages, it is widely used in substations. The current models mainly include: ZN12-10, ZN28A-10, ZN65A-12, ZN12A-12, VS1, ZN30.