The ABB THQB21100 is a compact, thermal-magnetic Q-Line circuit breaker designed for reliable performance in residential and commercial applications. This 2-pole breaker offers a 100A amperage rating and a 10kA interrupting capacity, ensuring safety and protection. Featuring Quick-make / Quick-break mechanisms and common trip bars, it provides enhanced safety and easy-to-spot trip indication. The bolt-on design is ideal for direct connection to the bus connections of load centers and lighting panels. It is suitable for reverse feed applications and is marked for HACR (Heat-Activated Cooling and Refrigeration) use..The ABB THQB21100 is a 2-pole, 100A Q-Line circuit breaker with a thermal-magnetic trip function. It operates at a system voltage of 120/240 Vac and has an interrupting rating of 10 KAIC at both 120 Vac and 120/240 Vac. This non-interchangeable breaker features fixed long-time and instantaneous trip functions and is suitable for reverse feed applications. It is marked for HACR use and has a UL File # E11592.