... the circuitry. GCK series low pressure shaft cabinet model switchbox are used for electric motorcontrol central, power distributing centre. They ... , the feed, the illumination,the motor control andthe power compensates. It conforms with the GB7251-97,ZBK36001-89 ... IP3LO, IP4LO10) Protection: a) In circuit design, operating power source adopted electric move measure (with isolation transformer) b) In ...