ABB ACH580-04-725A-4 400 kW HVAC drive. ABB ACH580-04-725A-4 is an ACH580 HVAC drive rated 400 kW, 725 A, 380-480 V, frame R11. It is designed for air-handling units, chillers, cooling towers, pumps and ventilation fans, with ABB drive control and energy-efficient motor operation.