ABB ACS880-904-2310A-5 2001 kW regenerative rectifier unit. ABB ACS880-904-2310A-5 is a current air-cooled ACS880-904 regenerative rectifier unit rated 2001 kW and 2310 A at 380-500 V AC, using 4×R8i + 2×BL-25-5. It returns braking energy to the AC network and stabilizes the common DC bus for coordinated multidrive systems. Typical applications include cranes, elevators, winders, downhill conveyors, test benches, marine systems and regenerative process machinery. This is a cabinet-building module, not a complete cabinet.