ABB / General ElectricTHQL32040ST1
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ABB / General Electric THQL32020ST1 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Plug-On
ABB / General Electric
THQL32020ST1
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
THQL32020ST1
Quantity
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ABB / General Electric THQL32020ST1 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Part of the GE Q-Line family, the THQL32020ST1 is a 20A, three-pole molded case circuit breaker designed for commercial and industrial applications. It features a factory-installed 120VAC shunt trip for remote tripping capabilities. This 1-inch per pole plug-on breaker mounts into GE PowerMark Gold load centers and AQ lighting panels. It serves as a drop-in replacement for the legacy TQL32020, ensuring seamless integration into existing electrical systems.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQL32020ST1 |
| Series | THQL |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | GE PowerMark Gold Load Centers, 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120VAC) |
| Standards | HACR, UL 489 |
| Approval | UL |
| Temp Rating | 60C to 75C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break |
Product FAQs
5 answersWhat does the ST1 suffix indicate on the THQL32020ST1?
The ST1 suffix indicates that this breaker includes a factory-installed 120V AC shunt trip. This feature includes pigtail leads and allows for remote tripping of the breaker via an external control circuit or shut-off switch.
Why is this breaker listed under both ABB and General Electric?
ABB acquired GE Industrial Solutions in 2018. Depending on the manufacturing date, the THQL32020ST1 may feature either ABB or GE branding. The physical dimensions, specifications, and UL listings remain identical regardless of the label.
Which load centers are compatible with this 3-pole breaker?
This plug-on breaker is designed specifically for GE PowerMark Gold load centers and GE AQ lighting panels that accept standard 1-inch per pole Q-Line breakers.
Is the THQL32020ST1 suitable for HVAC equipment?
Yes, this thermal-magnetic circuit breaker is HACR rated, making it approved for use with heating, air conditioning, and refrigeration equipment.
How much panel space does the THQL32020ST1 require?
As a standard Q-Line breaker, it requires three 1-inch spaces, occupying a total of 3 inches of width on the panel bus.
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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.