The characteristics of the vacuum circuit breaker

① contact opening distance of small, 10KV vacuum air circuit breaker contact opening distance is only about 10mm, circuit breakers the operating mechanism of the operating power is small,

the mechanical part of the stroke is small, and its 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 contact gap arc media recovery speed, off-off line fault better performance.
④ Because dredge in breaking current amount of wear is small, so the electrical contacts, long life, full capacity breaking up 30-50 times the rated current breaking

up to 5,000 times more noise for frequent operation.
⑤ small size and light weight.
⑥ For breaking capacitive load current.
Due to its many advantages, it is widely used in substations, the current models are: ZN12-10 type, ZN28A-10 type, ZN65A-12 type, ZN12A-12 type, VS1 type, ZN30 type,

etc.