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接触器用真空灭弧室用于远距离、频繁地接通和分断交流主电路和大容量控制电路的电器。如用于煤矿、化工、冶金、水泥等行业有防爆、防腐蚀和防火要求以及环境较恶劣的场所。真空接触器的优势是既可频繁操作,起控制作用,又可开断短路电流,作短路保护。宏发接触器用真空灭弧室采用一次封排工艺,具有真空度高、绝缘强度好、截流值低、寿命长等特点。

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