ABB / General Electric THQL1120 Miniature Circuit Breaker

While both are Q-Line breakers, they are not strictly interchangeable for the same panel slots. The THQL1120 is a standard 1-inch wide full-size breaker, whereas THQP breakers are 1/2-inch wide half-size units. Always verify your load center's label to see which breaker types are permitted and how they fit your specific busbar configuration.

Yes, the THQL1120 is backward compatible with most legacy GE PowerMark Gold and A-Series panelboards that accept standard 1-inch plug-on Q-Line breakers. However, you should consult the interior label of your panel to confirm THQL is an approved replacement type.

ABB acquired GE Industrial Solutions, so the THQL circuit breaker line is now manufactured by ABB. It retains the same THQL1120 catalog number, physical dimensions, and UL listings as the original GE product, making it a direct drop-in replacement for older GE-branded units.

Yes, 15A and 20A single-pole THQL breakers carry an SWD (Switching Duty) rating. This means the THQL1120 is certified to be used safely as a switch for standard 120V fluorescent lighting circuits without damaging the breaker mechanism.

Yes, the THQL1120 is HACR rated. This indicates it is UL-approved for use with Heating, Air Conditioning, and Refrigeration equipment that requires this specific overcurrent protection designation.

Like most standard thermal-magnetic breakers, the THQL1120 is rated for 80 percent continuous load. For continuous applications operating for three hours or more, the sustained load should not exceed 16 amps.

No, the THQL1120 is a standard thermal-magnetic circuit breaker designed solely to protect against short circuits and overloads. It does not include ground-fault (GFCI) or arc-fault (AFCI) protection features.