ABB / General ElectricTHQL2120GFT
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ABB / General Electric THQL2120GF1 GFCI Miniature Circuit Breaker
- 20A
- 2 Pole
- Plug-On
ABB / General Electric
THQL2120GF1
GFCI Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQL2120GF1
Quantity
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ABB / General Electric THQL2120GF1 - 20A GFCI Miniature Circuit Breaker
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Description
Engineered for continuous safety, the THQL2120GF1 is a 2-pole, 20A GFCI breaker featuring self-test technology. It provides 5mA Class A ground fault protection for both 120/240VAC and 208Y/120VAC commercial and residential systems. The unit installs into GE PowerMark Gold, ABB ReliaHome, and GE AQ Lighting panels using a standard plug-on mount. It serves as a reliable predecessor to the THQL2120GFT. A pigtail neutral and thermal-magnetic trip ensure code-compliant defense against shocks.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQL2120GF1 |
| Series | THQL |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 208Y/120VAC, 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 208Y/120VAC, 10kA @ 120/240VAC |
| Frame Type | THQL |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE PowerMark Gold Load Centers, ABB ReliaHome Load Centers, GE AQ Lighting Panels |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LIG |
| Trip Function | Long-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Special Classification | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | HACR, UL 489, UL 943 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break, Self-Test |
Product FAQs
6 answersWhich load centers accept the THQL2120GF1 breaker?
This breaker installs into GE PowerMark Gold load centers, ABB ReliaHome load centers, and GE AQ Lighting Panels that accept standard 1-inch Q-Line plug-on breakers.
What is the ground fault trip sensitivity for the THQL2120GF1?
It provides Class A ground fault protection, meaning the breaker is calibrated to trip when it detects a ground leakage current of 5mA.
How is the neutral connected on the THQL2120GF1?
This breaker uses a pigtail neutral. The attached white pigtail wire must be routed and secured directly to the neutral bus bar in the panel for the GFCI circuitry to function correctly.
Are the THQL2120GF1 and THQL2120GF interchangeable?
Yes, they are functionally identical 2-pole GFCI breakers. The suffix indicates a minor manufacturer revision, but both share the same form factor and trip characteristics.
What is the difference between the THQL2120GF1 and the THQL2120GFT?
The THQL2120GFT is the newer version of this breaker that includes an automatic self-test feature to comply with updated UL 943 standards. The THQL2120GF1 is the predecessor without the automated self-test function, though both fit the same panels.
Can the THQL2120GF1 be used on a 208Y/120V system?
Yes, this breaker is rated for both 120/240VAC single-phase and 208Y/120VAC systems. When used in a 208Y/120V panel, it provides a 10kAIC interrupting capacity.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 90 reviews.
Total 5 star reviews: 88 Total 4 star reviews: 1 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Generated by AI from 78 most recent customer reviews
Last updated 8/5/25
Customers say these circuit breakers arrive quickly and fit their electrical panels perfectly. Many reviews mention competitive pricing compared to local suppliers. Frequent comments address the secure packaging and prompt delivery. Reviews highlight the exact match to specifications and ease of installation. The selection receives particular praise, especially for hard-to-find models.
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Rating
90 reviews
- KLKim L.Verified BuyerReviewingABB / General Electric THQL2130 - 30A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/6/26Circuit Breaker
Thank you for your fast efficient service! We had a power outage and several power surges that took out our breaker. Fast easy inexpensive repair!!
- RHRussell H.Verified BuyerReviewingABB / General Electric THQL1120GF - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/20/26Hard To Find
Had an old breaker that was hard to find but they had it and at a reasonable price!
- JBJeff B.Verified BuyerReviewingABB / General Electric THQL32030 - 30A 3 Pole Miniature Circuit BreakerRated 3 out of 5 stars7/14/26No paperwork
Part arrived, would have been nice to receive a packing slip or something in the box beside the part.
- SNScott N.Verified BuyerReviewingABB / General Electric THQL32100 - 100A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/26/26Owner
Worked great, breaker was the exact match
- JDJerry D.Verified BuyerReviewingABB / General Electric THQL32050 - 50A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/19/26Best place to get great prices on 3pole breakers
i have bought from super breakers before & when i need these for a job i know they will be great. i buy to restock my truck.