Eaton CHQ120 Thermal Magnetic Circuit Breaker - UL 489

Space-efficient CHQ 3/4-inch footprint enables denser, more economical panel layouts in CH Loadcenters, reducing enclosure height and permitting additional circuits without upgrading the panel. Business impact: lower retrofit costs and faster commissioning; application: residential and light commercial panel upgrades. 20 A, 120/240 V, 10 kAIC interrupt rating provides robust protection for typical branch circuits while meeting code requirements for medium-duty protection; impact: improved reliability and risk reduction in critical circuits; application: branch circuit protection in small to mid-size panels. Ground fault capability (as noted in special features) adds an essential safety layer for sensitive loads, enhancing firefighter and personnel safety in awkward installations; impact: reduced electrical hazards and compliance with safety standards. Classified as a CHQ 3/4-Inch replacement, it fits Type CH Loadcenters without additional adapters, decreasing installation time and error-prone field modifications; application: retrofit projects where space and compatibility are paramount. Wire size compatibility supports commonly used Cu/Al conductors (one #14-8 AWG, two #14-10 AWG Cu/Al), enabling straightforward wiring and minimizing conductor crowding; impact: streamlined wiring and consistent electrical performance. Warranty and UL 489 certification underpin long-term serviceability and compliance, while the catalog notes highlighting replacement for Square D QO breakers help engineers plan cross-brand upgrades with confidence.