ABB / General ElectricTHQL32025
ABB / General Electric THQL31WY20 Miniature Circuit Breaker
- 20A
- 3 Pole
- Plug-On
ABB / General Electric
THQL31WY20
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQL31WY20
Quantity
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ABB / General Electric THQL31WY20 - 20A 3 Pole Miniature Circuit Breaker
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Description
Built for specialized residential and commercial applications, the 20A THQL31WY20 provides essential protection for circuits like gas pumps where the neutral must be broken. The three-pole configuration utilizes two active protective poles alongside a non-automatic switched neutral. Designed for quick installation, this plug-on breaker is fully compatible with GE PowerMark Gold load centers and AQ lighting panels.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | THQL |
| Amperage | 20A |
| Poles | 3 |
| 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 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 |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Switched Neutral (WY Suffix) |
| Standards | HACR, UL 489 |
| Approval | UL |
| Temp Rating | 60C to 75C |
| Construction Features | HACR Rated, Switched Neutral, Non-Automatic Pole, Common Trip, Quick-Make/Quick-Break |
Product FAQs
6 answersWhat is the purpose of the switching neutral feature on the THQL31WY20?
The switching neutral design simultaneously disconnects the ungrounded conductors and the neutral conductor when the breaker trips or is manually turned off. This is typically required by the National Electrical Code (NEC) for specialized applications like fuel dispensing equipment to ensure complete electrical isolation.
How many panel spaces does the THQL31WY20 occupy?
This breaker requires three standard 1-inch spaces in a GE PowerMark Gold load center or AQ lighting panel. It utilizes two spaces for the thermal-magnetic poles and one space for the non-automatic neutral switching pole.
Is the THQL31WY20 designed for 3-phase electrical systems?
No. Although it occupies three panel spaces, it is strictly rated for 120/240VAC single-phase systems. The third pole is dedicated exclusively to disconnecting the neutral conductor, not a third phase.
Does the neutral pole on this breaker provide overcurrent protection?
No. The neutral pole on the THQL31WY20 is non-automatic, meaning it acts only as a switch to open the neutral circuit when the breaker is manually operated or when the two thermal-magnetic hot poles trip due to an overload or short circuit.
What does the WY suffix indicate in the THQL31WY20 catalog number?
In GE Q-Line nomenclature, the WY suffix designates a switching neutral circuit breaker. This indicates the breaker includes an additional non-automatic pole specifically for disconnecting the neutral conductor.
Are ABB and GE THQL31WY20 breakers interchangeable?
Yes. Following ABB acquiring GE Industrial Solutions, Q-Line breakers are manufactured to the identical form, fit, and function. The breaker may feature either ABB or GE branding but remains the exact same component.
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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.