Schneider Electric ATV340D75N4E Altivar™ 3-Phase Variable Speed Drive With Heat Sink, 380 to 480 V, 156.2 A at 380 V/135.8 A at 480 V Normal Duty, 134.3 A at 380 V/118.1 A at 480 V Heavy Duty,134.3 A, 118.1 A, 125 hp Normal Duty, 100 hp Heavy Duty