This 20A, two-pole miniature circuit breaker from Eaton / Cutler-Hammer provides essential thermal-magnetic protection for commercial environments. Designed for 120/240VAC systems, it safeguards branch circuits and mounts securely into Eaton Pow-R-Line, Bryant, and Westinghouse enclosures. It's a reliable replacement for discontinued QNBL series breakers and features a 10kAIC interrupt capacity for effective fault clearing. The breaker also carries HACR and SWD ratings, making it suitable for HVAC and lighting applications..The Eaton / Cutler-Hammer BAB2020 is a 2-pole, 20A miniature circuit breaker with a thermal magnetic trip technology. It operates on 120/240VAC, 24VDC, 48VDC, 62.5VDC, and 80VDC. The breaker has an AIC rating of 10kA at 120/240VAC and 5kA at various DC voltages. It features a bolt-on mounting style and box lug terminal type, designed for use with Eaton Pow-R-Line, Westinghouse, and Bryant panelboards. The trip function is Long-Time, Instantaneous with fixed thermal and magnetic trip adjustability. It supports wire gauges from 14-4 AWG (Al/Cu) and has a temperature rating of 40C. Standards include HACR, SWD, UL 489, and CSA C22.2 No. 5, with CSA and UL approvals.