ABB / General Electric THHQB2125GFT GFCI Miniature Circuit Breaker
- 25A
- 2 Pole
- Bolt-On
Quantity
ABB / General Electric THHQB2125GFT - 25A GFCI Miniature Circuit Breaker
New
Quantity
Description
Part of the Q-Line family, this 25A miniature circuit breaker combines standard thermal-magnetic trip functions with 5mA Class A ground-fault protection. The GE THHQB2125GFT operates at 120/240VAC with a robust 22kAIC interrupting capacity. Designed specifically for commercial and industrial applications, it bolts securely into GE A-Series and AQ lighting panels. The breaker includes automated self-test diagnostics and an internal common trip mechanism, ensuring reliable performance.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | THHQB |
| Amperage | 25A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 120/240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels |
| 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 | Self-Test Ground Fault Circuit Interrupter |
| Standards | CSA C22.2 No. 5, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Internal Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip, Self-Test |
Product FAQs
7 answersWhich panelboards accept the THHQB2125GFT circuit breaker?
This bolt-on breaker mounts directly to the bus in GE A-Series Panelboards and GE AQ Lighting Panels. It is not compatible with standard Q-Line load centers that require plug-on connections.
How is the neutral connection handled on the THHQB2125GFT?
This breaker features a factory-installed pigtail neutral. The pigtail must be routed and secured to the panel neutral bus to power the internal ground fault circuitry, while the load neutral connects directly to the breaker.
Why choose the THHQB2125GFT over a standard THQB breaker?
The H in the THHQB prefix designates a high-interrupting capacity of 22kAIC at 120/240V AC. This is required for commercial or industrial installations where the available fault current exceeds the standard 10kAIC rating of THQB models.
What are the approved wire gauges and materials for this breaker?
The box lugs accommodate 14 to 8 AWG copper conductors or 12 to 8 AWG aluminum conductors. Ensure proper torque specifications are followed during installation.
What trip functions are integrated into the THHQB2125GFT?
It utilizes a thermal-magnetic mechanism for standard overload and short-circuit protection (Long-Time and Instantaneous), plus a dedicated ground fault sensor to interrupt power when leakage current is detected.
Can I replace a THQB2125GFT with a THHQB2125GFT?
Yes. The THHQB2125GFT shares the exact same physical dimensions and bolt-on mounting style as the THQB2125GFT, but provides a higher 22kAIC interrupting rating. It is a direct, upgraded replacement.
Are the trip settings adjustable on the THHQB2125GFT?
No, this breaker features fixed thermal and magnetic trip settings. The Long-Time, Instantaneous, and Ground Fault trip thresholds are factory calibrated and cannot be modified in the field.
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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