Field-service fit: DIN rail swap
The PXF9AEP2-FBCA1: 1/4 DIN cutout (92 x 92mm panel hole) and the 96 x 96mm face match standard panel controllers — if you're swapping a failed unit on a line, the existing cutout and panel clamp hardware work without rework. No special tools beyond a screwdriver for the clamp screws.