The S0 frame is 45 mm wide and 97 mm deep — that 45 mm width is the critical panel-space dimension; it occupies one standard 45 mm slot on the rail. The main-circuit terminals accept screw-type connections, M4 thread, with a wire range of 2x 1–2.5 mm² or 2x 2.5–10 mm² solid or stranded.
Lifecycle status is current — no phase-out, no NRND flag. That means it's a standard catalog item, not a discontinued part you'd need to broker. For a tail-spend buyer, this is the kind of line you want on a preferred-supplier punch-out: consistent availability, no maverick sourcing. The 3RV2321-1BC10 is the exact order code for the BOM; no substitute needed.