KDHC系列转换开关适用于交流50HZ,额定工作电压440V以下，直流电压240V以下，约定发热电流至63A的电气线路中，供手动不频繁接通和分断电路中，作为控制或转换之用，主要用于NBC-200、 250、315、400、500、630等CO2气保焊机，逆变弧焊机和空气等离子切割机上调节电流或电压，也可用作电气设备的电路转换。

      KDHC series changeover switch is suitable for the circuits of AC 50Hz, rated voltage 440V and below, DC voltage 240V and below, Agreed fever current to the electrical 63A circuits, to manually make and break the circuit non-frequently as transferring or control, it is mainly used in NBC-200、250、315、400、500、630 and etc C02 gas welding machine, inverter arc welding machine, and air plasma cutting machine to adjust the current or voltage,