ABB THHQB1120GFT2 Ground Fault Circuit Breaker
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Core Specs
See full specsABB THHQB1120GFT2 1 Pole Ground Fault Circuit Breaker
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Description
ABB THHQB1120GFT2 1 Pole Ground Fault Circuit Breaker
The ABB THHQB1120GFT2 is a 1 Pole molded case ground fault circuit breaker with a current rating of 20 Amps and a voltage rating of 120VAC. It has an interrupting rating of 22kAIC. The THHQB1120GFT2 has a bolt-on connection type.
Specifications
| Amperage | 20 A |
|---|---|
| Voltage | 120VAC |
| Series | THHQB |
| Poles | 1 |
| Interrupting Rating | 22kAIC |
|---|
| Connection Type | Bolt-On |
|---|---|
| Length (in) | 3.31 |
| Width (in) | 2.73 |
| Height (in) | 1.36 |
| Configuration | Single |
| Protection | Standard |
|---|---|
| Circuit Breaker Type | GFCI |
| Brand | ABB |
|---|
Product FAQs
7 answersIs the ABB THHQB1120GFT2 the same as the GE THHQB1120GFT2?
Yes. Following ABB's acquisition of GE Industrial Solutions, this breaker may arrive with either GE or ABB branding. Both versions are identical in form, fit, and function.
Can I use the THHQB1120GFT2 to replace an older THHQB1120GFT?
Yes. The THHQB1120GFT2 is the direct manufacturer replacement for the obsolete THHQB1120GFT. The updated GFT2 version includes automatic self-test functionality and an LED trip indicator.
Which panelboards are compatible with the THHQB1120GFT2 circuit breaker?
This Q-Line bolt-on breaker is designed exclusively for installation in ABB and GE ReliaGear, A-Series, and AQ lighting panelboards.
What type of ground fault protection does the THHQB1120GFT2 provide?
It provides Class A personnel protection. The breaker is calibrated to trip when it detects a ground fault leakage current of 5 mA, protecting users from severe electrical shock in damp or wet locations.
What wire sizes are accepted by the load terminals on this breaker?
The load terminals accommodate 14 to 8 AWG copper conductors or 12 to 8 AWG aluminum conductors.
How is the neutral connection made for this GFCI breaker?
The breaker is equipped with a factory-installed pigtail neutral wire. This pigtail must be routed and connected directly to the neutral bus bar in the panelboard to ensure proper ground fault detection.
Is the THHQB1120GFT2 rated for use with HVAC equipment and lighting circuits?
Yes. It is HACR rated for use with heating, air conditioning, and refrigeration equipment. It is also SWD (Switching Duty) rated, meaning it can be used to switch 120V fluorescent lighting loads on and off.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 13 reviews.
- JLJames L. L.Verified BuyerReviewingABB / General Electric THHQB21100 - 100A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/6/26ABB / General Electric THHQB21100
Fast Service and delivery, The breaker was as described and brand new! Great pricing and great Service. I paid extra for UPS ground, it was delivered quickly.
- SNScott N.Verified BuyerReviewingABB / General Electric THHQB32030 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars12/30/25Perfect
The correct breaker the first time - every time.
- AGAlejandra G.Verified BuyerReviewingABB / General Electric THHQB1140 - 40A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Everithing is good!
Everithing is good!
- LMLuis M.ReviewingABB / General Electric THHQB2145 - 45A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/19/23Good product and good service
Good product and good service
- SHScott H.ReviewingABB / General Electric THHQB2180 - 80A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/21/2280amp commercial breaker
Great how easy it was to order and how fast I got it. I will order one again when needed