ABB ACS880-37-0061A-7 55 kW ultra-low-harmonic cabinet-built drive. ABB ACS880-37-0061A-7 is a current ACS880 ultra-low-harmonic cabinet-built drive rated 55 kW and 61 A at 525-690 V AC, using R6. It integrates active-front-end harmonic mitigation for typically below 3% input-current distortion under nominal network conditions. ABB Direct Torque Control, Safe Torque Off and flexible industrial communications support demanding crane, mining, metals, cement, marine, oil and gas, test-bench and process applications across industrial applications.