What lands on the BOM line
The ACS380-040C-25A0-4+K457: At 2.72 kgs it is a single-handler on the bench — pull, swap, and re-seat from a DIN-rail or panel-mount footprint without calling for a second pair of hands. The +K457 suffix rides on the standard ACS380-040C platform, so option-card layout, control terminal strip, and fieldbus slot positions follow the rest of the 040C frame rather than a custom build.
Where the 040C-25A0 fits in the line
3-phase 380-480 V input window per the listing; current rating 25 A on this frame. For cabinet layout, the 040C mechanical footprint is the same across the current ladder within the series, so a panel cut and cooling clearance specified around another 040C frame carries over — the difference is the current rating and the option-code suffix, not the chassis.