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ABB XT2SU3090BFF000XXX — Molded Case Circuit Breakers (MCCB)

ABB XT2SU3090BFF000XXX XT2S Molded Case Circuit Breaker, 125

MPNXT2SU3090BFF000XXX

ABB XT2S molded case circuit breaker, 125 A frame, TMA 90-450-900 trip unit, 3-pole, UL/CSA, order code XT2SU3090BFF000XXX.

ABB XT2SU3090BFF000XXX datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Product details

The ABB XT2SU3090BFF000XXX is an XT2S molded case circuit breaker with a 125 A frame and a TMA 90-450-900 trip unit, in a 3-pole configuration rated for UL and CSA applications.

The 125 A frame and TMA 90-450-900 trip unit means this breaker is sized for feeder or main applications where adjustable thermal-magnetic protection is needed — the TMA offers a thermal pickup range from 90 to 450 A (at 40 °C) and a magnetic trip range from 450 to 900 A. That gives you selectivity headroom for downstream branch breakers and lets you dial in the trip curve to match motor inrush or transformer magnetizing current without nuisance tripping.

Mounts in a standard switchboard or panelboard enclosure on a DIN rail or direct-mount plate.

Frequently asked questions

What is the closest pin-compatible alternative to XT2SU3090BFF000XXX in this component family?

Within the XT2S family, the closest alternative would be another 125 A frame breaker with the same TMA trip unit and 3-pole configuration, differing only in the order code suffix for accessories or shipping options. No pin-compatible alternative exists outside the XT2S series.

MPN
XT2SU3090BFF000XXX