What it is and what it does
The ABB XT3SU3225DFF000XXX is a 3-pole molded case switch from the XT3S-D 225 series, carrying a 2700 A interrupting rating under UL/CSA listing. The interrupting rating of 2700 A means this switch can safely clear a fault current up to that level without damage to downstream equipment — critical for panel coordination studies and arc-flash hazard labeling.
Deployment context
As a molded case switch, it mounts in a panel or enclosure on a DIN rail or backplate, sized for the XT3S-D 225 frame footprint.