MCCB for panel builders and MRO
The ABB XT1HU3125AFF00NXXX is a 3-pole molded case circuit breaker from the XT1H series, rated at 125 A frame with a TMF (thermal-magnetic fixed) trip unit covering 125-1250 A. The "F F" designation indicates line and load terminals are both front-connected, standard for panel feed-through. UL/CSA listing confirms it for North American distribution and motor branch circuits.
