Technical Characteristics: Frame Size (T) 140-400 Output Power (HP) 1-300 Rated Voltage (V) 230/460, 460, 575 Frequency (Hz) 60 Speed (r/m) 3600, 1200, 1800 Number of Poles 2, 4, 6 Mounting F1, F2 Protection Class IP55 or above Insulation Class F or above Temperature Rise B Duty 1.15 service factor (S1) Cooling Method IC411