What you're holding
The ABB ACS800-04-0105-5+J400 is a cabinet-mount low-voltage AC drive from the ACS800-04 frame, ordered under the +J400 option suffix and weighing in at 32.21 kgs as listed. It sits in the industrial drives class — a regenerative-capable DTC-controlled platform that panel-builders have been specifying into heavy-industry motor cabinets since the series launched, and the +J400 string is the ABB convention for a pre-engineered option bundle that gets resolved against the factory order, not the field. For a buyer landing on this code cold, the practical reading is: same frame, same firmware family as the rest of the ACS800-04 line, with whatever control or I/O option set J400 specifies already burned in at build.
Reading the code
The base code ACS800-04-0105-5 is the order string on file for this drive, with the listed 32.21 kgs assembly weight governing lift and panel-rail handling. The trailing +J400 is the option suffix, resolved against ABB option-key documentation rather than field-fit; two units sharing the base code but differing in the +J### suffix are not necessarily pin-compatible on the terminal card and built-in option modules.
Where the ACS800-04 platform sits
ACS800-04 drives are the panel-mount members of the ACS800 family of low-voltage AC drives, classified under Drives / Motor Drives. Integrators typically mount them inside a motor control centre on the back panel, with line reactors, braking choppers, and plug-in fieldbus option modules resolved through the +J### suffix on the order code.