The ABB 3ADT218042S0234 is a DCS880-S02-2500-07 DC converter, a 4-quadrant regenerative unit rated for 2500 A at 690 VAC. Frame size H7. This is the drive section for a large DC motor armature or field supply in applications requiring full four-quadrant control — motoring and regenerative braking in both directions.
Auxiliary terminals are rated IP00 per IEC 60529 and IEC 60947-1, meaning no ingress protection on those connection points — they require enclosure in a panel or cabinet with at least IP2X on the gland plate. Operating humidity range is 5 to 95% RH, non-condensing. The unit emits 75 dB(A) under load, which may dictate acoustic enclosure placement in noise-sensitive environments. Three analog inputs and two analog outputs are available for speed/current reference and actual-value feedback. The converter is designed for 50 Hz line frequency.