ABB / General ElectricTHQL2150
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ABB / General Electric THQL2145 Miniature Circuit Breaker
- 45A
- 2 Pole
- Plug-On
ABB / General Electric
THQL2145
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQL2145
Quantity
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ABB / General Electric THQL2145 - 45A 2 Pole Miniature Circuit Breaker
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Description
Built for residential and commercial applications, the THQL2145 is a 45A, 2-pole miniature circuit breaker. It delivers dependable thermal-magnetic protection for standard 120/240VAC electrical systems. This plug-on breaker mounts into GE PowerMark Gold load centers, GE A-Series panelboards, and modern ABB ReliaHome panels. It serves as a direct replacement for older installations and is transitioning to the THQL2145A model.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQL2145 |
| Series | THQL |
| Amperage | 45A |
| 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 PowerMark Gold Load Centers, GE A-Series Panelboards, ABB ReliaHome Load Centers |
| Wire Gauge | 8-3 AWG (Cu), 8-3 AWG (Al) |
| Max Wire | 3 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 60C to 75C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break |
Product FAQs
6 answersWhat load centers are compatible with the THQL2145 breaker?
This breaker is designed for use in GE PowerMark Gold, GE A-Series panelboards, and ABB ReliaHome load centers that accept full-size, 1-inch plug-in Q-Line breakers.
Can I install this THQL breaker in a space designed for THQP breakers?
THQL breakers are full-size, 1-inch per pole devices. They will not fit in the half-inch slots exclusively designed for THQP breakers, though many GE panels accept both types in different positions. Verify your panel's bus layout before installation.
Can I use the THQL2145 to replace a THHQL2145?
The THQL2145 has a 10kAIC interrupting rating, while the THHQL2145 is rated for 22kAIC. You can only substitute the THQL2145 if your system's available fault current is 10kA or less.
Do I need a hold-down kit if I am back-feeding the THQL2145 as a main breaker?
Yes. When used as a back-fed main in a compatible GE PowerMark Gold load center, the National Electrical Code requires a retainer kit, such as the THQLRK1, THQLRK2, or THQLRK3, depending on your specific panel model.
Is the THQL2145 HACR rated for HVAC equipment?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment that requires a 45-amp overcurrent protection device.
What applications typically require a 45-amp 2-pole breaker?
A 45A 240V circuit is commonly used for specific residential and commercial loads, such as large electric water heaters, electric vehicle (EV) charging stations, and dedicated HVAC compressors.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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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.