ABB XT1NU3090AFF000XXX Molded Case Circuit Breaker

ABB SACE Tmax XT1NU3090AFF000XXX is a 3-pole molded case circuit breaker from the XT1N family, rated for 90 A and designed for 50/60 Hz systems up to 600 V AC. Built with a thermal-magnetic (TMF) trip mechanism, it provides fixed protection and is suitable for distribution panels and motor circuits. The XT1NU3090AFF000XXX uses a 125 A frame in the XT1N lineup and features front-terminal connections on both the line and load sides for easy wiring. It carries a current interrupt rating up to 18 kA at 600 V, giving robust short-circuit protection in commercial and industrial power layouts. The compact housing measures about 5.12 in high, 3 in wide, and 2.75 in deep, helping conserve panel space while preserving accessibility for testing and replacement. Rated for 50/60 Hz operation, this breaker tolerates a wide operating temperature range, typically from -25 to 70 °C (-13 to 158 °F). It’s UL and CSA listed, aligning with common electrical standards for safety and compatibility in North American installations.