This product is mainly suitable for AC 50Hz, rated voltage 230V, rated current to 40A line, overload, short circuit, overvoltage, undervoltage circumstances. 

The product also features remote control, electrical parameter (voltage, current, power) measurement, and networking with external devices via RS485 communication interface or Bluetooth 

Main functions: overload protection, short circuit protection, overvoltage protection, undervoltage protection, electrical parameter measurement, remote opening and closing.