ABB / General Electric THQC1120GF GFCI Molded Case Circuit Breaker
- 20A
- 1 Pole
- DIN Rail
Quantity
ABB / General Electric THQC1120GF - 20A GFCI Molded Case Circuit Breaker
New
Quantity
Quantity
ABB / General Electric THQC1120GF - 20A GFCI Molded Case Circuit Breaker
New
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQC1120GF |
| Series | THQC |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | DIN Rail |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | THQC |
|---|---|
| Terminal Type | Lugs |
| For Use With | DIN Rail Systems, OEM Panels, Enclosures |
| 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 |
| Special Classification | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Line and Load Lugs Included, Pigtail Neutral |
| Standards | HACR, SWD, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 10C to 50C |
| Construction Features | HACR Rated, SWD Rated, Quick-Make/Quick-Break |
Quantity
ABB / General Electric THQC1120GF - 20A GFCI Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQC1120GF-R |
| Series | THQC |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | DIN Rail |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | THQC |
|---|---|
| Terminal Type | Lugs |
| For Use With | DIN Rail Systems, OEM Panels, Enclosures |
| 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 |
| Special Classification | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Line and Load Lugs Included, Pigtail Neutral |
| Standards | HACR, SWD, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 10C to 50C |
| Construction Features | HACR Rated, SWD Rated, Quick-Make/Quick-Break |
Description
Engineered for personnel safety, the GE THQC1120GF delivers 5mA ground fault interruption in a 1-pole package. This 20A, 120V breaker provides reliable thermal-magnetic protection for residential and commercial applications. Designed with lug-to-lug terminals, this unit installs onto standard 35mm DIN rail systems and OEM enclosures. It serves as the predecessor to the self-testing THQC1120GFT model. Rated for 10 kAIC, it features a pigtail neutral and meets NEC code for wet locations.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQC1120GF |
| Series | THQC |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | DIN Rail |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | THQC |
|---|---|
| Terminal Type | Lugs |
| For Use With | DIN Rail Systems, OEM Panels, Enclosures |
| 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 |
| Special Classification | GFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Line and Load Lugs Included, Pigtail Neutral |
| Standards | HACR, SWD, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 10C to 50C |
| Construction Features | HACR Rated, SWD Rated, Quick-Make/Quick-Break |
Product FAQs
7 answersWhat types of enclosures and systems accommodate the THQC1120GF?
This Q-Line breaker is designed for installation in OEM panels, compatible enclosures, and standard 35mm DIN rail systems.
How must the pigtail neutral be wired during installation?
The pigtail must be wired directly to the neutral bus bar in your panel. This connection is required to power the internal circuitry and enable ground fault sensing.
Can I use aluminum wiring with the THQC1120GF?
Yes, the terminals are rated for both copper and aluminum conductors. Ensure you use the correct wire gauge, as the acceptable range differs slightly between the two materials.
Is there a self-testing equivalent for the THQC1120GF?
Yes. The THQC1120GF is a standard GFCI breaker. If your application requires a self-testing unit to meet updated NEC requirements, you can use the THQC1120GFT model as a direct replacement.
Why might this breaker ship with ABB branding instead of GE?
Following ABB's acquisition of GE Industrial Solutions, Q-Line breakers are transitioning to ABB branding. Units marked with either brand are identical in form, fit, and function.
What level of ground fault protection does this breaker provide?
It delivers 5mA ground fault interruption. This Class A protection level is engineered specifically for personnel safety to prevent electrical shock hazards in wet or damp locations.
How does the trip mechanism operate on this model?
It utilizes a fixed thermal magnetic trip unit that provides long time and instantaneous protection against overloads and short circuits, alongside its dedicated ground fault circuitry.
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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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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 42 reviews.
- POPaul O.Verified BuyerReviewingABB / General Electric THQC2150 - 50A 2 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars9/3/26Recent Breaker Purchases
These breakers matched perfectly for my main AC supplies for my boat. I had the original 43-year-old Chinese (GenFu) breakers that failed and these GEs were a perfect match. My only reservation for not providing a 5-star review is breakers do not arrive in GE's original packaging which can lead to questions whether they are truly "new" breakers. Otherewise, happy I found some that replaced my originals. Thanks SB!
- AAAlfredo A.Verified BuyerReviewingABB / General Electric THQC2150 - 50A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/26/26Replacement of disconnect switches
Good product and price
- JSJoe S.Verified BuyerReviewingABB / General Electric THQC32015WL - 15A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/22/26THQC tough to find…
Works as should
- MPMike P.Verified BuyerReviewingABB / General Electric THQC2150 - 50A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/6/26Everything worked out just fine. I would recommend it again.
Considering how old the panel was the breaker worked out just fine. Were you again?
- QPQuang P.Verified BuyerReviewingABB / General Electric THQC2130 - 30A 2 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars2/10/26Fast Shipping & Quality Service
Great experience with SuperBreakers! The GE THQL 60A and 30A breakers arrived with fast shipping and professional packaging. The free shipping was a huge bonus. My HVAC is back up and running—excellent service!