Overall size is not mounting size
Overall width, depth and height differ from mounting-hole centers. Interpret W, D, H, A and B using the corresponding drawing. The same VA rating does not guarantee the same size across winding types, voltages and constructions.
Allow for wiring and access
Check terminal access, wire bending space, cover removal and maintenance access. Required clearances depend on the equipment design and applicable requirements; overall fit alone is not sufficient.
Describe the environment
Enclosure ventilation, nearby heat sources and ambient temperature are relevant to selection. A cover does not by itself establish a dust or water ingress rating. State any required protection rating separately.
Photos useful for a replacement review
Provide the nameplate, overall view, terminal markings, mounting points and available space. Photos alone do not establish dimensions; include measured values or an existing drawing. Confirm final fit against the approved drawing.