ABB / General ElectricTHQB2150
ABB / General Electric THQB22050 Miniature Circuit Breaker
- 50A
- 2 Pole
- Bolt-On
ABB / General Electric
THQB22050
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQB22050
Quantity
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ABB / General Electric THQB22050 - 50A 2 Pole Miniature Circuit Breaker
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Description
A dependable solution for commercial facilities, this 50-amp bolt-on component delivers standard thermal-magnetic protection. It utilizes fixed thermal and magnetic trip settings to protect branch circuits against overloads and short circuits. The unit installs into GE A-Series panelboards using a secure bolt-on connection and standard box lug terminals. It accommodates 8-3 AWG copper or aluminum wiring. Rated for 10kAIC at 240VAC, it features an internal common trip and is HACR rated.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | THQB |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE A-Series Panelboards |
| Wire Gauge | 8-3 AWG (Cu/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 Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Internal Common Trip, Non-Interchangeable Trip, Quick-Make/Quick-Break |
Product FAQs
7 answersWhat panelboards are compatible with the THQB22050 circuit breaker?
The THQB22050 is a bolt-on circuit breaker designed specifically for GE A-Series panelboards. It will not fit in standard residential load centers that require plug-on breakers.
What is the difference between GE THQB and THQL circuit breakers?
THQB breakers, like the THQB22050, feature a bolt-on connection for commercial A-Series panelboards. THQL breakers are plug-in style breakers used primarily in residential load centers. They are not interchangeable.
Can I use a THHQB breaker instead of a THQB breaker?
Yes. THHQB breakers share the exact same physical dimensions and bolt-on mounting as THQB breakers, but they offer a higher interrupting capacity of 22kAIC compared to the 10kAIC rating of the THQB series.
Why is the THQB22050 listed under both ABB and General Electric?
ABB acquired GE Industrial Solutions. The THQB series continues to be manufactured under the ABB brand, maintaining the exact specifications, certifications, and footprint of the original GE design for full backward compatibility.
What is the recommended lug torque for the THQB22050 breaker?
For the THQB22050, the required lug torque depends on the wire gauge. Torque the box lugs to 40 in-lb for 8 AWG wire, 45 in-lb for 6 to 4 AWG wire, and 50 in-lb for 3 AWG wire.
Is the THQB22050 circuit breaker HACR rated?
Yes, the THQB22050 carries a HACR rating, making it suitable for protecting heating, air conditioning, and refrigeration equipment circuits.
Does the THQB22050 mount to a standard DIN rail?
No, the THQB22050 is a bolt-on molded case circuit breaker designed to bolt directly to the bus bar in compatible GE panelboards. It is not DIN rail mountable.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 110 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 4/16/26
Customers say these circuit breakers arrive quickly and work as expected. Many reviews mention fast shipping, with some receiving orders overnight or within days. Users report the breakers fit properly, install easily, and function correctly in both residential and commercial applications. Common feedback includes competitive pricing and good packaging that protects products during shipping. While most praise the ordering process as straightforward, some note occasional issues with missing installation screws or receiving updated product versions instead of pictured models. Several contractors and electricians appreciate having access to hard-to-find or obsolete breakers when local suppliers lack inventory.
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Rating
110 reviews
- SPSarah P.Verified BuyerReviewingABB / General Electric THQB1120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26Exactly as Described
These are so hard to find at a good price. Will be ordering again.
- SBSeth B.Verified BuyerReviewingABB / General Electric THQB1120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/8/26Hard to find older style breakers
I am pleased to have access to these breakers. We have a number of them at our church. Local suppliers said that they had never seen this kind of breaker. They fit our panel perfectly.
- TZThomas Z.Verified BuyerReviewingABB / General Electric THQB32040 - 40A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/30/26Great company
This company is awesome. Every time I call them and I need help with something. They’re right there to help me. They’re also very knowledgeable. They go out of their way to get you the product that you need right away and not a great price.
- TDTerry D.Verified BuyerReviewingABB / General Electric THQB2130GFT - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/24/2630 AMP GFCI @ POLE
Breakers were new in box as advertised. Good turn around on orders Reasonable pricing much less than abb dealer
- LMLeslie M.Verified BuyerReviewingABB / General Electric THQB21100 - 100A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/16/26Perfect fit.
Always timely with delivery and a perfect.fit.