Eaton CVS3125 Molded Case Circuit Breaker - 42 kAIC

125 A amperage rating provides targeted protection for main circuits without unnecessarily interrupting normal operation. This rating supports stable feeders into distribution panels while reducing nuisance trips and arc energy exposure during transient events. The CVS3125 is designed for three-phase services and uses the CV frame, enabling straightforward cross-referencing with existing Eaton protection hardware in both new builds and retrofit projects. In practice, engineers appreciate the predictable locking and trip characteristics that help meet OEM startup timelines. With a 42 kAIC interrupt rating, the CVS3125 clamps fault currents effectively, improving system safety and reducing downstream damage during short circuits. This high-duty capability translates into faster isolation of faults, lower arc energy, and minimized warranty exposure on connected equipment. It is particularly valuable in compact switchgear where buswork and insulation budgets are tight. The CV frame sizing and three-pole construction simplify coordination with feeders and main lugs, while the device’s rugged construction withstands routine maintenance operations. The 7.5 in length, 5 in width, and 5 in height footprint matches common panelboard cavities and bus bar layouts, reducing enclosure redesign. The unit ships with clear wiring diagrams and compatible terminal hardware to support fast field assembly, aligned with Eaton installation best practices. Terminals sized for #6 to 4/0 kcmil Cu/Al provide flexible wiring options for feeders and mains, with secure clamps and torque recommendations that improve reliability. The terminal design accommodates both copper and aluminum conductors, easing procurement in mixed-energy installations. Field installation benefits include straightforward stripping, tightening, and verification processes, helping electricians meet tight commissioning windows. CSA Std. C22.2 No. 5 and UL 489 certifications anchor compliance for industrial protection devices used in critical facilities. These marks support safety case documentation and supplier qualification processes, encouraging faster procurement cycles. The CVS3125’s certification profile aligns with many international and North American electrical codes, reducing risk during audits and modernization projects. With dimensions 7.5 in length, 5 in width, and 5 in height, and a weight of 4.4 lb, CVS3125 offers a compact yet robust footprint for panel installations. The limited lifetime warranty provides long-term protection against manufacturing defects, supporting reduced maintenance costs over the life of the equipment. Pick-and-place compatible, it pairs seamlessly with Eaton’s CV family and standard busbar configurations, delivering reliable protection with minimal field rework.