What it is and the catch
The 1TNE968901R3105: This is the 9-pole terminal block for ABB's TA565 Distributed Automation I/O platform — spring-front and cable-front compatible. The deal is you can't order one; minimum is 6, and it has to be in multiples of 6. That's the pallet-level constraint for the BOM line.
Integration note for the wire-up
Spring-clamp termination on the front, cable entry on the same side — keeps the wiring tidy inside the cabinet. 9 poles, so it handles a full channel group for a standard digital or analog slice. No special tools beyond a screwdriver for the spring release.