The XT1NU3125AFFBG0XXX: The 125 A frame and TMF 125-1250 trip unit cover a 125 A to 1250 A adjustable thermal-magnetic trip range — the '125-1250' in the description refers to the trip unit's continuous current rating adjustable band, not a 1250 A frame. The 125 A frame size means the breaker's physical dimensions and bus connections are sized for that continuous current; the TMF trip provides both thermal overload (inverse-time) and magnetic short-circuit (instantaneous) protection. UL/CSA listing confirms the breaker meets North American panelboard and switchgear standards, so it slots into a UL 489 or CSA C22.2 No. 5 panel without additional agency review.
ABB XT1NU3125AFFBG0XXX XT1N 125A TMF 3P FF UL/CSA MCCB
MPNXT1NU3125AFFBG0XXX
ABB XT1N Series, molded case circuit breaker, 125 A, TMF 125-1250 trip unit, 3-pole, fixed front terminals, UL/CSA, order code XT1NU3125AFFBG0XXX.
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Independent China distributor & sourcing agent· Listing updated Sep 2026
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XT1NU3125AFFBG0XXX