... -4MP-50-4MP-75-4Rated VoltageThree-phase 400/230 VRated Current54A90A135AFrequency50HzPower Supply Method3-phase & 4-wireControl CabinetTypeKZGF-30KZGF-50KZGF- ... such as protector of over-current,over-voltage,reverse power,under-voltage and over-speed&over-heat.And also ... functions of showing voltage,current,frequency,power factor,water temperature,and oil pressure ...