ABB ACS880-11-07A6-5 4 kW regenerative drive. ABB ACS880-11-07A6-5 is a current ACS880 regenerative wall-mounted drive rated 4 kW, 7.6 A, 380-500 V AC, frame R3, IP21. Its active supply unit returns braking energy to the network and maintains total harmonic current distortion below 3% under nominal undistorted-network conditions. It provides Direct Torque Control, Safe Torque Off and flexible industrial communications for demanding applications across industrial applications.