ABB / General ElectricTHQL32030
ABB / General Electric THQL31WY30 Miniature Circuit Breaker
- 30A
- 3 Pole
- Plug-On
ABB / General Electric
THQL31WY30
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQL31WY30
Quantity
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ABB / General Electric THQL31WY30 - 30A 3 Pole Miniature Circuit Breaker
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Description
Part of the GE Q-Line family, this 30-amp miniature circuit breaker is engineered for commercial and industrial environments that mandate a switched neutral. The device combines standard thermal-magnetic overcurrent protection with a non-automatic neutral disconnect. This component snaps securely into GE Q-Line load centers and compatible lighting panels using a standard 1-inch plug-on mounting style. The box lug terminals are rated for 14-8 AWG copper or 12-8 AWG aluminum conductors.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQL31WY30 |
| Series | THQL |
| Amperage | 30A |
| 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 Q-Line Load Centers, 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 | Shunt Trip, Auxiliary Switch, Padlock Attachment |
|---|---|
| Accessories | Switching Neutral (Factory Installed) |
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | CSA, HACR, UL |
| Temp Rating | 60C to 75C |
| Construction Features | Switching Neutral, Common Trip, HACR Rated, Quick-Make/Quick-Break |
Product FAQs
7 answersWhat does the WY suffix indicate in the THQL31WY30 catalog number?
The WY suffix designates this as a switched neutral circuit breaker. It features an additional pole designed to simultaneously disconnect the grounded neutral conductor along with the ungrounded hot conductors when the breaker is tripped or manually opened.
What are typical applications for a switched neutral breaker like the THQL31WY30?
Switched neutral breakers are required in applications where the neutral must be completely isolated for safety and code compliance. Common installations include fuel dispensing equipment, specific generator transfer switches, and certain marine electrical systems.
Can the THQL31WY30 be installed in a 3-phase electrical system?
No. Although it has three physical poles, this breaker is rated for single-phase 120/240VAC systems. Two poles are used for the ungrounded hot legs, and the third pole is dedicated exclusively to switching the neutral conductor.
How much panel space is required to install the THQL31WY30?
This breaker requires three standard 1-inch spaces in a compatible GE Q-Line load center or lighting panel.
What wire gauges are accepted by the terminals on this 30A breaker?
The box lugs are rated to accept 14 AWG to 8 AWG copper conductors, or 12 AWG to 8 AWG aluminum conductors.
Will I receive a GE or ABB branded THQL31WY30 breaker?
Following ABB's acquisition of GE Industrial Solutions, this exact component may arrive with either GE or ABB branding. The internal components, physical dimensions, and UL listings remain identical regardless of the logo on the label.
Why is a switched neutral breaker required for fuel dispensing equipment?
Disconnecting the neutral conductor simultaneously with the hot legs prevents any feedback voltage from other unbalanced loads from reaching the equipment. This eliminates potential shock hazards and prevents sparks in highly flammable or explosive environments.
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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.