ABB ACH580-01-490A-4 250 kW HVAC drive. ABB ACH580-01-490A-4 is an ACH580 HVAC drive rated 250 kW, 490 A, 380-480 V, frame R9. It is designed for air-handling units, chillers, cooling towers, pumps and ventilation fans, with ABB drive control and energy-efficient motor operation.