ABB SACE Tmax XT1N125-3P-600V Circuit Breaker

ABB SACE Tmax XT1N125-3P-600V is a 125 A three-pole molded-case circuit breaker in ABB's SACE Tmax XT family, designed for branch-circuit protection in commercial and industrial electrical installations. The XT1N125 variant is rated for up to 600 V AC (600Y/347 V) and is UL/CSA listed, with ABB catalog entries showing XT1N 125 TMF 60-600 3P as the fixed-mount option in the 125 A frame. This TMF version provides a compact, plug-compatible solution for distribution boards and switchgear where reliable overload and short-circuit protection is required, and the 125 A frame is part of a broader XT lineup that supports a wide range of breaking capacities. The Tmax XT line is known for its robust performance and wide availability of accessories and compatible components, making it suitable for use in commercial, industrial, and data-center electrical distribution networks where dependable circuit protection is essential. Breaking capacity options extend up to around 200 kA for appropriate variants, enabling coordination with other protective devices in high fault-current environments.