The ABB XT4HU3250GFF000XXX is a 3-pole molded case circuit breaker from the XT4H 250 family, rated 25 A continuous at 600 VAC. The 65 kA interrupting rating at that voltage means it can safely clear a fault up to 65,000 A without welding contacts or rupturing the case — a spec that governs whether this breaker holds in a high-fault panel downstream of a large transformer.
Panel-mount design — no DIN-rail adapter. The XT4H frame uses a fixed front-panel mounting pattern; plan for dedicated cutout and bus-bar connections. 600 VAC rating suits 480 V and 600 V distribution panels common in North American industrial plants.