IE3 Premium Efficiency Cast Iron Motors, Output Power: 37 kW (Kilowatts), Voltage: 400 V (Volts), Delta connection (D); also suitable for 690 V Star connection (Y), Frequency: 50 Hz, Poles: 2 poles, Speed: Approximately 2951 rpm at 50 Hz, Efficiency Class: IE3 Premium Efficiency, Frame Size: IEC 200, Enclosure: IP55 (dust protected and protected against water jets), Frame Material: Cast Iron, Mounting: IMB5 / IM3001 (flange mounting), Insulation Class: ICLF, Duty Type: S1 (Continuous duty)