Eaton MPSC123VEAXX2S Low Voltage Power Circuit Breaker - UL

With a rated uninterrupted current (Iu) of 1200 A, the MPSC123VEAXX2S supports large feeders without overheating, reducing the risk of heat-related faults in dense panel racks. This translates to safer operation and longer service intervals, particularly in manufacturing lines and data-center auxiliary power rooms. The three-pole, standard-frame design aligns with common Magnum PXR configurations, enabling straightforward drop-in replacements and minimal wiring changes. Its 100 kA interrupt rating provides substantial fault current clearing capability, which is crucial in facilities with high short-circuit potential. The high breaking capacity improves protection for feeders and equipment, reducing arc flash exposure and collateral damage. In practice, engineers can rely on consistent performance during peak demand or short-circuit events. The PXR25 LSIG ARMS trip unit offers advanced zone-selective interlocking options and protection coordination, enabling selective tripping and reduced system-wide outages. This helps meet NEMA and UL coordination requirements while simplifying engineering studies and mitigations. Operators gain improved reliability in motors, drives, and switchgear networks. With fixed vertical mounting and a standard Magnum frame, installation fits neatly into existing enclosures and MCCs, minimizing retrofit complexity. The compact footprint (14.6 in depth, 16.2 in width, 16.8 in height) supports dense layouts without sacrificing accessibility for maintenance. Compatibility with Power Xpert software further enables remote status checks and fault history analysis. Certified for UL, CE, ANSI, KEMA, Lloyd's Register, CSA, ABS, and DNV GL, this breaker meets global installation requirements for regulated industries such as oil and gas, chemical processing, and critical manufacturing. The breadth of approvals reduces vendor variance and accelerates procurement cycles. In practice, owners gain lower total cost of ownership through reduced spare parts, streamlined commissioning, and longer service life.