ABB ACS580-01-073A-4+B056 LV AC general purpose wall-mounted drive, IEC: Pn 37 kW, 73 A, 400 V. ABB ACS580-01-073A-4+B056 is an ACS580 general-purpose drive rated frame R4. It is designed for pumps, fans, conveyors, compressors and process equipment, with ABB drive control and energy-efficient motor operation.