ABB / General Electric THQL1120AF2S AFCI Miniature Circuit Breaker

This breaker is designed for use in GE Q-Line and PowerMark Gold load centers that accept 1-inch wide THQL series plug-in breakers.

The AF2 designation indicates that it is a Combination Arc Fault Circuit Interrupter (AFCI). It provides advanced protection by detecting both parallel and series arcing to meet modern National Electrical Code (NEC) requirements.

The S indicates that the breaker is equipped with a short pigtail neutral lead. This design simplifies installation and minimizes wiring clutter inside the panel compared to standard length pigtails.

This breaker features a pigtail neutral connection. The attached coiled white wire must be routed and secured directly to the neutral bus bar in the load center to ensure proper arc fault detection.

No. The THQL1120AF2S is a standard 1-inch wide breaker, whereas THQP breakers are 1/2-inch wide space-savers. They are not interchangeable unless the specific panel bus design and labeling explicitly accept full-size THQL breakers in that slot.

It provides standard thermal-magnetic protection against overloads and short circuits, combined with combination arc fault (AFCI) protection to detect dangerous arcing conditions that could lead to electrical fires.

Yes, the THQL1120AF2S is the current generation combination AFCI replacement for older first-generation GE AFCI models, such as the THQL1120AF.