... started without load. Over-load and phase loss protection for any single phase.Technical parameters:Features:Microprocessor basedOverload, phase failure, rotor-locked, Asymmetry protectionCurrent ... -40A~200A40A~200A20kW~100kWZHRA2-80A~400A80A~400A40kW~200kW ZHRA2 Three Phase Digital Motor Protector with overcurrent,Phase loss,rotor-locked,Asymmetry protection