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ABB XT4NU3100AYJ000XXX — Molded Case Circuit Breakers (MCCB)

ABB XT4NU3100AYJ000XXX NEXT4N 250 TMF 100-1000 3P F F UL/CSA

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ABB NEXT4N 250 TMF 100-1000 3P F F UL/CSA, order code XT4NU3100AYJ000XXX.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Product details

The ABB XT4NU3100AYJ000XXX is a NEXT4N 250 TMF 100-1000 3P F F UL/CSA thermal-magnetic circuit breaker. The TMF trip unit combines a fixed thermal element for overload protection with a fixed magnetic element for short-circuit protection, tuned for the 100-1000 A range. Rated for 250 A frame size, three-pole, with front terminals (F F). UL and CSA certified, so it's accepted in North American panels without additional agency review.

The three-pole front-terminal design simplifies busbar connections and reduces wiring time in MCC or switchboard builds. The TMF 100-1000 trip range covers motor feeders, transformer primaries, and general distribution circuits where a fixed magnetic pickup is acceptable.

Frequently asked questions

How do I get current pricing and availability for XT4NU3100AYJ000XXX?

Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels.

What does the description NEXT4N 250 TMF 100-1000 3P F F UL/CSA mean?

It decodes as: NEXT4N series, 250 A frame, TMF (thermal-magnetic fixed) trip unit set for 100-1000 A, three-pole, front terminals (F F), UL and CSA certified.

What compliance documentation does ABB provide for XT4NU3100AYJ000XXX?

The listing confirms UL and CSA certification, meaning the breaker is accepted in North American installations. RoHS and REACH declarations are standard with ABB industrial components; request them with your RFQ.

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