ABB / General ElectricTHQL2120ST1
ABB / General Electric THQL2115ST1 Miniature Circuit Breaker
- 15A
- 2 Pole
- Plug-On
ABB / General Electric
THQL2115ST1
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQL2115ST1
Quantity
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ABB / General Electric THQL2115ST1 - 15A 2 Pole Miniature Circuit Breaker
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Description
Designed for commercial and industrial applications, this two-pole 15A breaker includes a factory-installed shunt trip mechanism for remote power disconnection. It installs into GE A-Series panelboards and compatible load centers requiring a 1-inch per pole footprint. Delivering 10kAIC of fault protection, the thermal-magnetic unit features an internal common trip and quick-make/quick-break contacts to ensure reliable performance under load.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | THQL |
| Amperage | 15A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | THQL |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE A-Series Panelboards |
| 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2 No. 5, UL 489, HACR |
| Approval | CSA, UL |
| Temp Rating | 10C to 50C |
| Construction Features | HACR Rated, Internal Common Trip, Quick-Make/Quick-Break |
Product FAQs
8 answersWhat panelboards are compatible with the THQL2115ST1 circuit breaker?
This plug-in breaker is designed for use in GE A-Series panelboards and compatible GE Powermark Gold load centers that accept 1-inch per pole Q-Line breakers.
What does the ST1 suffix indicate on this GE THQL breaker?
The ST1 suffix indicates that this breaker includes a factory-installed 120V shunt trip accessory. This allows the breaker to be tripped remotely via an external control signal or emergency shut-off switch.
How much panel space does the THQL2115ST1 require?
As a 2-pole breaker in the standard GE Q-Line family, it requires two 1-inch spaces, totaling 2 inches of space in a compatible plug-on load center.
What wire sizes are accepted by the box lugs on this breaker?
The box lug terminals accommodate 14 to 8 AWG copper wire or 12 to 8 AWG aluminum wire.
Is the THQL2115ST1 a plug-on or bolt-on circuit breaker?
The THQL2115ST1 is a plug-in circuit breaker. If your commercial lighting panel requires a bolt-on connection, you will need the equivalent THQB series breaker instead.
How does the thermal-magnetic trip unit function on this breaker?
The fixed thermal-magnetic trip unit provides Long-Time and Instantaneous (LI) protection. The thermal component responds to prolonged overloads, while the magnetic component trips instantaneously during severe short circuits.
What applications typically require the shunt trip feature on the THQL2115ST1?
The integrated shunt trip is commonly used for emergency shutdown applications. It allows the breaker to be opened remotely when tied into a fire alarm system, emergency stop button, or other safety control circuits.
Why is this breaker listed under both ABB and General Electric?
ABB acquired GE Industrial Solutions, meaning GE-branded circuit breakers like the THQL series are now manufactured under the ABB umbrella. They remain fully interchangeable with legacy GE Q-Line breakers.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 90 reviews.
Total 5 star reviews: 88 Total 4 star reviews: 1 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
Reviews Summary
Generated by AI from 78 most recent customer reviews
Last updated 8/5/25
Customers say these circuit breakers arrive quickly and fit their electrical panels perfectly. Many reviews mention competitive pricing compared to local suppliers. Frequent comments address the secure packaging and prompt delivery. Reviews highlight the exact match to specifications and ease of installation. The selection receives particular praise, especially for hard-to-find models.
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Rating
90 reviews
- KLKim L.Verified BuyerReviewingABB / General Electric THQL2130 - 30A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/6/26Circuit Breaker
Thank you for your fast efficient service! We had a power outage and several power surges that took out our breaker. Fast easy inexpensive repair!!
- RHRussell H.Verified BuyerReviewingABB / General Electric THQL1120GF - 20A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/20/26Hard To Find
Had an old breaker that was hard to find but they had it and at a reasonable price!
- JBJeff B.Verified BuyerReviewingABB / General Electric THQL32030 - 30A 3 Pole Miniature Circuit BreakerRated 3 out of 5 stars7/14/26No paperwork
Part arrived, would have been nice to receive a packing slip or something in the box beside the part.
- SNScott N.Verified BuyerReviewingABB / General Electric THQL32100 - 100A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/26/26Owner
Worked great, breaker was the exact match
- JDJerry D.Verified BuyerReviewingABB / General Electric THQL32050 - 50A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/19/26Best place to get great prices on 3pole breakers
i have bought from super breakers before & when i need these for a job i know they will be great. i buy to restock my truck.