HZ10系列组合开关主要适用于交流50HZ、额定工作电压380V及以下，直流电压220V及以下，额定电流至100A的电路中，作手动不频繁的接通、分断和转换电阻电感混合负载电路和电流电阻负载电路， 也可控制小容量交流电动机。

       HZ10-□/E119电焊机用转换开关可用于电焊机上调节电流100A以下，交流50HZ (或60HZ)、额定电压380V及以下作电气设备的主电路，辅助电器的变换之用。

HZ10 combination switch is mainly used in the circuits of AC 50Hz, rated voltage 380V and below, DC voltage 220V andbelow, rated current up to 100A, to manually make, break and transfer circuit with inductive and resistance loads non-frequently, also it can directly control small capacity alternating motor.

HZ10-D/E119 switch is used in welding machine to adjust the current of less than 100A, AC 50Hz (or 60Hz), rated voltage 380V and below, and transfer between the main and spare appliances.