The GE ABB THQL1120AF2 is a combination-type Arc Fault Circuit Interrupter (AFCI) breaker in GE’s Q-Line (THQL) family. It provides protection against both series and parallel arc faults, meeting NEC requirements for arc-fault protection. It uses a thermal-magnetic trip mechanism (fixed – non-interchangeable) but with arc-fault detection, meaning it trips on overloads, short circuits, and also when dangerous arcing is detected.
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