Schneider Electric ATV930D18S6 Altivar™ 3-Phase Variable Speed Drive, 600 V, 23.2 A at 600 V Normal Duty, 19.6 A at 600 V Heavy Duty, 25 hp at 600 V Normal Duty, 20 hp at 600 V Heavy Duty, 9.69 in W x 9.53 in D