ABB XT5HU340ABFF000XXX is a SACE Tmax XT molded‑case circuit breaker (MCCB) in the XT5 frame, rated for 400 A and configured as a fixed, three‑pole unit with front‑terminal connections. It uses a thermal‑magnetic (TMA) trip unit and is UL/CSA listed, designed for industrial low‑voltage distribution tasks. The device supports up to 600 V nominal (maximum) with an interrupting rating of 65 kA at 480 VAC, making it suitable for protecting feeders in three‑phase circuits. The alternate catalog number XT5HU340ABFF000XXX corresponds to ABB catalog 1SDA102520R1, which identifies the same XT5H 400 A, 3P UL/CSA MCCB with front terminals and TMA release.
