The ABB ELECTRIC THQB2140 is a Q-Line Miniature Circuit Breaker designed for reliable residential and commercial applications. This bolt-on type breaker features a compact, one-inch wide per pole design and incorporates Quick-make / Quick-break mechanisms for enhanced safety. It provides easy-to-spot trip indication, ensuring quick identification of faults. Available in 2-pole configurations, it is suitable for use in HID applications and meets HACR special markings..The ABB ELECTRIC THQB2140 is a 2-pole, 40 Amp miniature circuit breaker with a 10 KAIC interrupting rating at both 120V and 120/240V. It operates with a thermal-magnetic trip mechanism and features fixed long time and fixed instantaneous trip functions. The breaker is designed for bolt-on applications and is suitable for reverse feed. It has a system voltage rating of 120 Vac and 120/240 Vac. Special markings include HACR, and it is GSA compliant.