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ABB XT1NU3125DFF000XXX — Molded Case Circuit Breakers (MCCB)

ABB XT1NU3125DFF000XXX XT1N-D 125A 3-Pole MCCB

MPNXT1NU3125DFF000XXX

ABB, XT1N-D series, molded case circuit breaker, 3 poles, 125 A, order code XT1NU3125DFF000XXX.

ABB XT1NU3125DFF000XXX datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

XT1NU3125DFF000XXX — Specifications
ParameterValue
Poles3

Product details

What the 125 A rating means on the panel floor

That's sized for a 75–90 kVA transformer secondary, a 30–40 HP motor feeder, or a sub-distribution board feeding a machine cell. The XT1N-D frame is ABB's compact IEC design, so it fits standard DIN-rail or panel-mount enclosures without eating up gland-plate space.

The closest peer in the same XT1N family is XT1NU3090AFF000XXX — same 3-pole form factor, same frame depth, but rated 90 A instead of 125 A. The only difference is the trip unit calibration: 125 A gives you a 39 % higher continuous rating in the same cubicle space. If the original spec called for 90 A and the load grew, this is a drop-in upgrade — no enclosure change needed.

Frequently asked questions

What is the closest functional second-source to XT1NU3125DFF000XXX?

The XT1NU3090AFF000XXX is the same 3-pole XT1N-D frame at 90 A — same footprint, same wiring, just a lower trip rating. It's a functional peer for panels originally specified at 90 A.

Will XT1NU3125DFF000XXX drop into a panel built for XT1NU3090AFF000XXX?

Yes — both share the same XT1N-D mechanical dimensions and bus-bar centers. No re-wiring or enclosure modification is required.

Where can I buy XT1NU3125DFF000XXX and get current pricing?

Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your target quantity and region.

MPN
XT1NU3125DFF000XXX