The 3-pole, fixed thermal and fixed magnetic (F F) design means the trip settings are factory-set and not field-adjustable — a detail that matters when matching the breaker to a specific load's inrush and continuous current. The UL/CSA marking on the description confirms it carries the approvals needed for North American panel builds.
ABB XT3SU3125AFJ000XXX XT3S Molded Case Circuit Breaker, 125
MPNXT3SU3125AFJ000XXX
ABB XT3S series molded case circuit breaker, order code XT3SU3125AFJ000XXX, 125 A thermal-magnetic trip, 3-pole, fixed thermal and fixed magnetic, UL/CSA certified.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Frequently asked questions
How do I get current pricing and availability for XT3SU3125AFJ000XXX?
Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through independent distribution channels.
What does the description XT3S 225 TMF 125-1250 3P F F UL/CSA mean?
It describes a 3-pole XT3S breaker in the 225 A frame, with a 125 A thermal-magnetic fixed trip unit, fixed thermal and fixed magnetic settings, and UL/CSA certification for North American use.
MPN
XT3SU3125AFJ000XXX