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ABB XT5NU340ADFF000XXX — Molded Case Circuit Breakers (MCCB)

ABB XT5NU340ADFF000XXX XT5N-D 400 A Molded Case Circuit Breaker, Current

MPNXT5NU340ADFF000XXX

ABB, XT5N-D 400 M, molded-case circuit breaker, order code XT5NU340ADFF000XXX (1SDA102659R1), lifecycle stage current.

ABB XT5NU340ADFF000XXX datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Product details

What this breaker is

The ABB XT5NU340ADFF000XXX is a molded-case circuit breaker from the XT5N-D 400 M family, rated for 400 A frame size. The order code resolves to ABB part number 1SDA102659R1. It lives in the Molded Case Circuit Breakers (MCCB) category — the workhorse for branch-circuit protection in industrial switchgear, motor control centers, and distribution panels.

The XT5N-D 400 M frame carries a 400 A continuous current rating. The D trip curve defines the magnetic trip threshold for coordination studies.

Frequently asked questions

What is the closest alternative to XT5NU340ADFF000XXX in the ABB MCCB family?

Within the XT5 platform, the XT5N 400 A with a different trip curve (B, K, or Z) is a direct mechanical swap. No pin-compatible alternative exists outside the XT5 family — MCCBs are not pin-compatible across brands or frame sizes.

MPN
XT5NU340ADFF000XXX