The description string decodes as: XT1H frame, 125 A continuous rating, TMF trip adjustable 80-800 A, 3-pole, fixed front terminals, UL/CSA version. Same part, different passport — the UL/CSA suffix means this variant is built for North American panel shops that require UL 489 or CSA C22.2 listing on the line side.
For a BOM freeze or line-down spare, this is the straightforward case: no need to qualify a replacement or stockpile against an EOL notice. Genuine is genuine, and this one is still in the catalog.