ABB / General ElectricTHQB2150GFT2
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ABB / General Electric THQB2140GFT2 GFCI Miniature Circuit Breaker
- 40A
- 2 Pole
- Bolt-On
ABB / General Electric
THQB2140GFT2
GFCI Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQB2140GFT2
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ABB / General Electric THQB2140GFT2 - 40A GFCI Miniature Circuit Breaker
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Description
Rated for 40 amps at 120/240VAC, this two-pole GFCI breaker combines standard overcurrent defense with sensitive 5mA ground fault detection. The GE THQB2140GFT2 is ideal for safeguarding high-demand circuits in residential, commercial, or industrial settings. The bolt-on design ensures a vibration-resistant connection within GE A-Series panelboards and AQ lighting panels. It seamlessly replaces the discontinued THQB2140GF and includes load side lugs that accommodate 8-3 AWG wiring.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | THQB |
| Amperage | 40A |
| 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 |
| Wire Gauge | 8-3 AWG (Cu/Al) |
| Max Wire | 3 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LIG |
| Trip Function | Long-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Fixed |
| Special Classification | GFCI |
|---|---|
| Available Options | Padlock Attachment, Shunt Trip, Auxiliary Switch |
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489, UL 943 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Self-Test, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards are compatible with the THQB2140GFT2 breaker?
This bolt-on GFCI breaker is designed for use in GE A-Series panelboards and GE AQ lighting panels.
Does the THQB2140GFT2 replace older GE GFCI breakers?
Yes, the THQB2140GFT2 is the direct replacement for the discontinued THQB2140GF. It adds modern self-testing capabilities while maintaining the same physical footprint and bolt-on connection.
What is the ground fault trip threshold for this breaker?
The THQB2140GFT2 provides Class A ground fault protection, meaning it is designed to trip when it detects a ground fault current of 5mA.
What wire sizes do the load side lugs on the THQB2140GFT2 accept?
The box lugs on this 40A breaker accept 8 AWG to 3 AWG copper or aluminum wiring.
How is the neutral connection established on the THQB2140GFT2?
This breaker utilizes a pigtail neutral wire that must be connected directly to the panel neutral bus bar to ensure proper ground fault detection.
What does the GFT2 suffix indicate on this GE breaker?
The GFT2 designation indicates that this is a ground fault circuit interrupter equipped with an automatic self-test feature to continuously verify the integrity of its ground fault protection.
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Free Shipping Policy
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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All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
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.