THQL2120GFT

The THQL2120GFT is a ‑pole,  amp ground‑fault circuit breaker in the Q‑Line THQL family, originally manufactured by General Electric (GE) and now produced and supported by ABB following its acquisition of GE’s industrial electrical business. This breaker is designed for 120/240 VAC residential and light commercial electrical distribution systems, where protection against ground fault currents-as well as overloads and short circuits-is required. The GFT suffix denotes that this model includes a ground‑fault trip (GFCI) function with self‑test, making it suitable for NEC‑mandated locations such as bathrooms, garages, outdoor receptacles, and other areas where personnel protection from earth leakage is mandated.

Electrically, the THQL2120GFT combines a conventional thermal‑magnetic trip unit with an integrated 5 mA ground‑fault sensing element, providing comprehensive protection in a single device. The thermal‑magnetic element delivers dependable overload and instantaneous short‑circuit interruption, while the ground fault circuitry detects even low levels of leakage current and trips rapidly to prevent shock hazards. It is UL 489 listed with a {aic rating} interrupting capacity, ensuring it can safely clear common fault currents found in residential and commercial panels. The self‑test feature periodically exercises the ground‑fault detection circuitry to help maintain readiness and compliance over time.

Mechanically, the THQL2120GFT uses a compact plug‑in design with one‑inch per pole spacing (Q‑Line frame), allowing it to install easily into compatible panelboards and load centers without additional mounting hardware. Its clear toggles and trip indication simplify visual inspection and maintenance, and it accepts standard copper or aluminum conductors sized appropriately for its rating. Because ABB continues to support this circuit breaker line, the THQL2120GFT remains a reliable choice for upgrades, replacements, or new installations where ground‑fault protection with self‑testing capability is required in single‑phase systems.

Purchase the THQL2120GFT at Electrical.com, your reliable partner for industrial and commercial electrical products including circuit breakers panel boards, load centers and accessories. Our selection includes manufacturers like ABB and General Electric, backed by a dedicated sales team ready to assist with technical questions, product selection, and support.