Power regulator is based on SCR (thyristor) and its trigger control circuit. It is a power controller unit for adjusting load power and controlling temperature. In addition, it is also used to limit electrical power and prevent circuits overload. ATO power regulators use linear phase shift control circuit, rated voltage is 380V, input is 3-phase 3-wire or 3-phase 4-wire, control signal is 4-20mA, 0-5VDC, 0-10VDC, built-in over-current protection function. Please select according to the required rated current or rated power.