ABB / General ElectricTHQB2120GFT
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ABB / General Electric THQB2115GFT GFCI Miniature Circuit Breaker
- 15A
- 2 Pole
- Bolt-On
ABB / General Electric
THQB2115GFT
GFCI Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQB2115GFT
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ABB / General Electric THQB2115GFT - 15A GFCI Miniature Circuit Breaker
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Description
Modern safety standards are met with this self-testing GFCI breaker, delivering Class A 5mA ground fault protection. It automatically conducts periodic internal tests to verify the protection mechanism remains functional. The bolt-on connection installs into GE A-Series, AQ Lighting, and ReliaGear RQ panelboards. This model serves as the exact replacement for older THQB2115GF and THQB2115GFI units. Operating at 120/240VAC with a 10kAIC rating, it features a non-interchangeable trip.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | THQB |
| Amperage | 15A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels, ReliaGear RQ Panelboards |
| 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 | Auxiliary Switch, Shunt Trip, Undervoltage Release, Padlock Attachment, Alarm Switch |
| Accessories | Self-Test Feature |
| Standards | CSA C22.2 No. 5, HACR, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip, Self-Test |
Product FAQs
8 answersWhat panelboards are compatible with the THQB2115GFT?
This bolt-on breaker is designed for use in GE A-Series panelboards, GE AQ lighting panels, and ABB ReliaGear RQ panelboards. It is not compatible with standard residential plug-on load centers.
Can I use the THQB2115GFT in a standard GE residential load center?
No. The THQB2115GFT is a bolt-on breaker intended for commercial panelboards. Standard GE residential load centers typically require Q-Line plug-on breakers, such as the THQL series.
What level of ground fault protection does the THQB2115GFT provide?
It provides Class A ground fault protection, which trips when it detects a ground fault current of 5mA. This level of protection is designed to protect personnel from electrical shock.
Does the THQB2115GFT include a self-testing feature?
Yes. The T in the THQB2115GFT catalog number indicates that it is a self-testing GFCI breaker. It automatically conducts periodic internal tests to verify that the ground fault protection mechanism remains fully functional.
How is the neutral connection wired on the THQB2115GFT?
This breaker features a pigtail neutral wire that must be connected directly to the panel neutral bus bar to power the internal GFCI circuitry. The load neutral wire connects directly to the breaker neutral lug.
Can the THQB2115GFT be used on a shared neutral circuit?
No. GFCI breakers require a dedicated neutral for the circuit they protect. Using this breaker on a shared neutral, or multi-wire branch circuit, will cause immediate nuisance tripping.
Is the THQB2115GFT a direct replacement for the THQB2115GF?
Yes. The THQB2115GFT is the modern, self-testing replacement for the older, obsolete THQB2115GF and THQB2115GFI models. It fits the same panelboards and provides the same 15A, 2-pole Class A ground fault protection.
How does the THQB2115GFT indicate a tripped condition?
The breaker features a center-trip handle position. When a fault or overload occurs, the handle moves to the middle position, making it easy to identify the tripped breaker in a crowded panelboard.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 110 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 4/16/26
Customers say these circuit breakers arrive quickly and work as expected. Many reviews mention fast shipping, with some receiving orders overnight or within days. Users report the breakers fit properly, install easily, and function correctly in both residential and commercial applications. Common feedback includes competitive pricing and good packaging that protects products during shipping. While most praise the ordering process as straightforward, some note occasional issues with missing installation screws or receiving updated product versions instead of pictured models. Several contractors and electricians appreciate having access to hard-to-find or obsolete breakers when local suppliers lack inventory.
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Rating
110 reviews
- SPSarah P.Verified BuyerReviewingABB / General Electric THQB1120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26Exactly as Described
These are so hard to find at a good price. Will be ordering again.
- SBSeth B.Verified BuyerReviewingABB / General Electric THQB1120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/8/26Hard to find older style breakers
I am pleased to have access to these breakers. We have a number of them at our church. Local suppliers said that they had never seen this kind of breaker. They fit our panel perfectly.
- TZThomas Z.Verified BuyerReviewingABB / General Electric THQB32040 - 40A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/30/26Great company
This company is awesome. Every time I call them and I need help with something. They’re right there to help me. They’re also very knowledgeable. They go out of their way to get you the product that you need right away and not a great price.
- TDTerry D.Verified BuyerReviewingABB / General Electric THQB2130GFT - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/24/2630 AMP GFCI @ POLE
Breakers were new in box as advertised. Good turn around on orders Reasonable pricing much less than abb dealer
- LMLeslie M.Verified BuyerReviewingABB / General Electric THQB21100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26Perfect fit.
Always timely with delivery and a perfect.fit.