The 3ADT218521S0141: The 900 A output at 400 VAC defines the converter's continuous current capability for DC motor armature or field supply. Frame size H4 tells you the mechanical footprint and mounting pattern — it is a large, floor-standing unit, not a panel-mount module, so plan for a dedicated cabinet or floor space. Three analog inputs and two analog outputs are available. The 50 Hz line frequency is fixed. Sound level is 66–70 dB(A).
This part is active per the manufacturer's product status, so there is no end-of-life watch or last-time-buy pressure. It is sourced to order through our supply chain; submit an RFQ for lead time and pricing against your BOM line.