The ABB ELECTRIC THQB1120 is a Q-Line miniature circuit breaker designed for reliable performance in residential and commercial applications. This compact, thermal-magnetic device features a one-inch width per pole, Quick-make / Quick-break mechanisms, common trip bars, and clear trip indication for enhanced safety. As a bolt-on version of the Q Line, it is ideal for direct connection to the bus connections of load centers and lighting panels. Available in a 1-pole configuration, it offers robust protection with a 10kAIC interrupting rating at 120/240 Vac and is suitable for reverse feed applications..The ABB ELECTRIC THQB1120 is a 1-pole miniature circuit breaker with a 20 A amperage rating and a 10 KAIC interrupting rating at both 120 Vac and 120/240 Vac. It operates with a fixed long time and fixed instantaneous trip function, classified as LI. The breaker is designed for a system voltage of 120 Vac and 120/240 Vac. It supports a wire range of 14-8 kcmil for copper and 12-8 kcmil for aluminum. The device is suitable for reverse feed applications and is marked for HACR and SWD use. Its dimensions are 3.280 inches in height, 1.000 inches in width, and 2.375 inches in depth, with a weight of 0.370 lb. It is listed under UL File # E11592.