It is a 3-pole device with UL/CSA certification, meaning it is listed for North American panel builds and complies with the short-circuit current ratings those standards require. The TMF trip provides inverse-time thermal protection for overloads and instantaneous magnetic protection for short circuits — the standard combination for motor branch circuits and general distribution.
ABB XT3NU3125AFJ000XXX XT3N 225 TMF 125-1250 3P FF UL/CSA
MPNXT3NU3125AFJ000XXX
ABB XT3N 225 molded case circuit breaker, TMF 125-1250 A trip unit, 3-pole, UL/CSA rated, order code XT3NU3125AFJ000XXX.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Frequently asked questions
What is the closest pin-compatible alternative to XT3NU3125AFJ000XXX in this component family?
Within the XT3N 225 frame, the closest alternative would be a unit with the same frame size and pole count but a different trip rating or trip type (e.g., electronic trip). No direct pin-compatible drop-in is listed as an official successor; verify the specific trip curve and interrupting rating for your application.
What compliance documentation does this brand provide for XT3NU3125AFJ000XXX?
The UL/CSA marking on the description indicates the breaker carries third-party certification for North American installations. RoHS and REACH compliance documentation is typically available from ABB on request for this series.
Where can I buy XT3NU3125AFJ000XXX and how is it quoted?
This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment.
MPN
XT3NU3125AFJ000XXX