250 A MCCB with high interrupt capacity
It carries a thermal-magnetic fixed trip and front flat terminals. The key spec for fit: 65 kAIC at 480 VAC and 25 kAIC at 600 VAC — that interrupt rating governs whether this breaker clears a fault without upstream coordination failure in a 480 V distribution panel.
Interrupt rating and deployment context
The 65 kAIC at 480 VAC means this breaker can interrupt a bolted fault up to 65,000 A at that voltage without self-destructing or cascading to upstream gear. That is a high-capacity rating for a 250 A frame — typically found in main or large-feeder positions in industrial switchboards, not branch-only duty. The 600 VAC rating at 25 kAIC keeps it viable for 600 V class Canadian or legacy industrial plants. Panel builders: the XT4 frame mounts with the standard ABB fixed or plug-in base; the front flat terminals accept busbar or cable lugs directly.