The ABB XT2SU3060AFF000XXX is a molded case circuit breaker from the XT2S 125 TMF family, rated 15 A with 2 poles and intended for wall mounting. This is a current-production part, so it remains a standard catalog item for new panels or as a drop-in replacement on existing XT2S installations.
For a 2-pole configuration, that means it protects a single-phase 240 V branch or two legs of a three-phase circuit, whichever the panel design calls for. The wall-mount form factor suits it for direct enclosure mounting rather than DIN-rail — verify the panel's backplate layout before committing the BOM line.