What this breaker is
The ABB XT4HU3250EJJ000XXX is a 3-pole molded case circuit breaker from the XT4H frame, rated 250 A continuous and fitted with an Ekip LS/I electronic trip unit. The LS/I designation means it provides selective (time-delayed) overcurrent protection plus instantaneous short-circuit protection — standard for main or feeder breaker duty in a distribution panel. UL and CSA marks confirm it for North American installations.
Lifecycle and sourcing
Lifecycle stage is listed as current — ABB continues to manufacture and support this order code as an active catalog item. No phase-out or last-time-buy notice exists.
Panel fit and approvals
Mounts in the standard XT4 drawout or fixed cradle, 3-pole footprint. UL 489 and CSA C22.2 No. 5 listed — accepted for service entrance, main, and feeder applications in North American panels. The fixed-front terminal design means the breaker body stays in the panel while the terminals remain accessible from the front for lugs or bus bars.