ABB XT1NU3110AFF000XXX Molded Case Circuit Breaker is a Tmax XT MCCB from ABB’s XT1NU family, designed to provide overcurrent protection for low‑voltage distribution panels. This 3‑pole, thermal‑magnetic (TMF) device is offered in AFF000XXX configurations and is compatible with UL/CSA listings for 600 V class systems. A closely related XT1NU3100AFF000XXX listing shows 100 A, 3P operation with an 18 kA interrupt rating at 600 V, illustrating the XT1NU family’s typical protection capabilities for feeders and motors in commercial and industrial panels.
