ABB / General Electric THHQL2120GFT GFCI Miniature Circuit Breaker
- 20A
- 2 Pole
- Plug-On
Quantity
ABB / General Electric THHQL2120GFT - 20A GFCI Miniature Circuit Breaker
New
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Description
Engineered for wet and damp locations requiring NEC compliance, this 20-amp double-pole unit provides essential personnel protection. It features an internal common trip and integrated self-testing to ensure continuous safety monitoring. Designed for residential and commercial applications, it mounts into GE A-Series panelboards, PowerMark Gold, and ABB ReliaHome load centers. This model serves as the modern, updated replacement for the discontinued THHQL2120GF version.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | THHQL |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 208Y/120VAC, 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 208Y/120VAC, 22kA @ 120/240VAC |
| Frame Type | THQL |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE PowerMark Gold Load Centers, GE A-Series Panelboards, ABB ReliaHome Load Centers |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| 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 | Self-Test Feature |
| Standards | HACR, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break, High Interrupting Capacity, Self-Test |
Product FAQs
7 answersWhich load centers are compatible with the THHQL2120GFT circuit breaker?
This breaker is designed for use in GE PowerMark Gold load centers, GE A-Series panelboards, and ABB ReliaHome load centers that accept Q-Line plug-in breakers.
What level of ground fault protection does the THHQL2120GFT provide?
It provides Class A 5mA ground fault protection for personnel, which is required by the NEC for wet or damp locations such as bathrooms, kitchens, and outdoor receptacles.
Does the THHQL2120GFT feature automatic self-testing?
Yes. The T in the catalog number indicates it includes a self-test feature that periodically runs internal diagnostics to ensure the ground fault circuitry is functioning properly, meeting modern UL requirements.
What is the difference between the THQL2120GFT and the THHQL2120GFT?
The primary difference is the interrupting rating. The THQL2120GFT has a standard 10kAIC rating, while the THHQL2120GFT features a higher 22kAIC rating for systems with higher available fault current.
How is the neutral connection made on the THHQL2120GFT?
This breaker uses a pigtail neutral wire that must be connected directly to the neutral bus bar in the load center to ensure proper ground fault detection.
What wire sizes are accepted by the box lugs on this 20A GFCI breaker?
The terminals accept 14 to 8 AWG copper wire or 12 to 8 AWG aluminum wire.
Can the THHQL2120GFT replace the older THHQL2120GF?
Yes. The THHQL2120GFT is the direct, modern replacement for the discontinued THHQL2120GF. It adds the required automatic self-test functionality while maintaining the same physical footprint and 22kAIC rating.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- TGTim G.ReviewingABB / General Electric THHQL32020 - 20A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars2/17/22great service!
great service!