换向开关,

dh2-7-125a 隔离换向开关
厂家直销ghk-250/1140隔离换向开关,ghk-250矿用隔离换向开关
换向开关dh2780a125a200a真空隔离矿用660v旋转防爆电气
dh2-7-80a/125a/200a 真空隔离换向开关矿用380/660v旋转换向开关
矿用低压防爆开关dh2-7-125隔离换向开关