LJZ12系列开关主要用于交流50HZ,额定工作电压690V及以下，直流电压240V及以下、额定电流至125A的电气线路中，供手动不频繁接通或分断电路作控制和转换之用，也可直接控制小容量交流电动机和作主令控制及电路测量之用，可全面代替其他转换开关。产品用途广泛，可作为电路控制开关、测试设备开关、电动机控制开关、主令控制幵关及电焊机开关等。

      LJZ12 series is a new combined switch based on foreign technology, small size, the making and breaking capacity exceeds domestic similar switches.This combined switch is mainly used in the circuits of AC 50Hz, rated voltage 690V and below, DC voltage 240V and below, rated current up to 125A，to manually make and break the circuit non-frequently as transferring or control, also it can directly control small capacity alternating motor, used as master control and electric measurement, it can replace other changeover switch. The switch has wide application, can be used as circuit control switch, switch for test equipment, motor control switch, master control
switch and welding machine switch and etc.