ABB Q-Line THQL2150GFT 50 A Double-Pole GFCI Circuit Breaker with Self-Test

Choosing a breaker for a panel circuit means matching its current rating and protection functions to the job. The ABB Q-Line THQL2150GFT combines a 50 A, double-pole design with GFCI protection and a self-test function, giving you a single breaker designed to address ground faults as well as overloads and short circuits.

Its plug-on pigtail connection and 120/240 VAC rating make it a clearly identified option for a suitable electrical panel and circuit.

Key specifications

• Type: GFCI circuit breaker
• Current rating: 50 A
• Poles: 2
• Voltage: 120/240 VAC
• Interrupting rating: 10 KAIC
• Features: Ground fault self-test, LIG trip function, plug-on pigtail
• Ratings: UL Listed and HACR Rated
• Dimensions: 5.1D x 14W x 16.5H centimetres

Getting the most from it

The ground-fault circuit interrupter monitors for electrical leakage and shuts off power when it detects a ground fault. Alongside that protection, the breaker is described as protecting against overloads and short circuits. Its self-test feature adds an automatic check to the GFCI function, while the double-pole configuration and 50 A rating identify the circuit requirements it is designed to serve.

Use the breaker where the panel and circuit call for these ratings and functions, rather than choosing by amperage alone. Confirm the panel’s specified breaker type and the circuit requirements before installation, panel work should be handled by a qualified electrician when you are not trained to do it safely. Some buyers report a good fit with GE THQL panels, but that feedback is not a substitute for checking the exact panel requirements.

Buyer feedback also commonly highlights straightforward installation, fit and reliable operation. Views on value are mixed, so the most useful way to assess this model is by whether its 50 A rating, double-pole design and GFCI self-test meet the needs of your intended circuit.

In the box

The listed included component is the THQL2150GFT circuit breaker. Its model number also makes it easier to match the part against panel and circuit requirements during selection.

Questions before you buy

What protection does this breaker provide? It combines GFCI protection with protection against overloads and short circuits. The ground-fault function detects electrical leakage and shuts off power when a fault is detected.

What are its electrical ratings? This is a 50 A, two-pole breaker rated for 120/240 VAC, with a 10 KAIC rating. Select it only when those specifications match the requirements for the panel and circuit.

What does the self-test feature do? The self-test function checks the GFCI protection. The breaker also has a LIG trip function, as identified in its product specifications.

Buying verdict

For a circuit that calls for a 50 A double-pole GFCI breaker, the THQL2150GFT brings ground-fault self-testing together with overload and short-circuit protection. Its defined ratings, plug-on pigtail design and UL Listed and HACR Rated designations help make it a practical choice when selecting a breaker to match the electrical panel and the circuit’s requirements.