vs the 8-input sibling
The 6ED1052-1FB00-0BA6 is an 8-input module with a display and 72 mm width (4 DU). This one is half the width, no display, half the inputs. IO count is different, footprint is different. Don't try to swap one for the other without checking the wiring schedule; the base module and terminal assignments don't match. If the BOM calls for the 6AG1055-1FB00-2XB1, that's what goes in.
Sourcing
This one is a spare part, quoted to order. Drop an RFQ and we'll get it lined up—no backorder drama on a current line.