The XT3NU4125AFF000XXX: The TMF designation indicates a thermal-magnetic fixed-trip unit inside the XT3N 225 frame. This is the standard overcurrent and short-circuit protection profile for branch-circuit protection in distribution panels, motor control centers, and feeder applications. The 225 A frame size supports downstream selectivity coordination studies — the TMF curve is a known quantity for arc-flash and coordination software libraries.
ABB XT3NU4125AFF000XXX XT3N 225 TMF MCCB, current lifecycle
MPNXT3NU4125AFF000XXX
ABB XT3NU4125AFF000XXX, XT3N 225 TMF, molded case circuit breaker, current lifecycle.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
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How do I get current pricing and availability for XT3NU4125AFF000XXX?
Pricing and availability are confirmed at quote time. Submit an RFQ through this listing; the order is sourced and quoted to order against independent distribution channels.
What is XT3NU4125AFF000XXX's listed description?
The listed description is: ABB XT3NU4125AFF000XXX, XT3N 225 TMF, molded case circuit breaker, lifecycle current.
MPN
XT3NU4125AFF000XXX