The ABB XT2HU3090BFF00NXXX is a molded case circuit breaker in the XT2H 125 frame, fitted with a TMA trip unit adjustable from 90 A to 450 A to 900 A, 3-pole, UL/CSA listed. The TMA trip combines thermal-magnetic overload and magnetic short-circuit protection, with the adjustable thermal element letting you dial in the continuous current rating to match the downstream load — useful when the same frame size needs to cover multiple motor or feeder ratings without swapping the breaker body.
The UL/CSA listing on the nameplate means this breaker has passed the short-circuit and endurance tests required for North American panel installations — no additional agency rider needed for a UL 489 or CSA C22.2 No. 5 panel.
Integration notes
Mounts in a standard ABB XT2H fixed or plug-in base. The TMA trip unit is field-adjustable via the dial on the front face — no need to pull the breaker or remove the cover to change the continuous current setting. The 3-pole 3PFF configuration means all three poles are protected with the same trip unit; no neutral pole.