ABB / General ElectricTHQB2160ST1
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ABB / General Electric THQB2150ST1 Miniature Circuit Breaker
- 50A
- 2 Pole
- Bolt-On
ABB / General Electric
THQB2150ST1
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQB2150ST1
Quantity
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ABB / General Electric THQB2150ST1 - 50A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
ABB / General Electric THQB2150ST1 - 50A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB2150ST1 |
| Series | THQB |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE AQ Lighting Panels, GE A-Series Panelboards |
| 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 | Auxiliary Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120VAC) |
| Standards | CSA C22.2 No. 5, HACR, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Internal Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Sold out
Quantity
ABB / General Electric THQB2150ST1 - 50A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB2150ST1-R |
| Series | THQB |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE AQ Lighting Panels, GE A-Series Panelboards |
| 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 | Auxiliary Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120VAC) |
| Standards | CSA C22.2 No. 5, HACR, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Internal Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
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Description
Designed for advanced control, the GE THQB2150ST1 is a 50-amp, two-pole breaker that integrates into commercial power systems. It provides standard thermal-magnetic protection alongside remote capabilities. This unit bolts into GE A-Series panelboards and AQ lighting panels. The bolt-on configuration guarantees a secure connection to the busbar. Featuring a factory-installed 120VAC shunt trip, it allows the breaker to be opened remotely. It is HACR rated and delivers a 10 kAIC capacity.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB2150ST1 |
| Series | THQB |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE AQ Lighting Panels, GE A-Series Panelboards |
| 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 | Auxiliary Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120VAC) |
| Standards | CSA C22.2 No. 5, HACR, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Internal Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the ST1 suffix indicate on the THQB2150ST1?
The ST1 suffix indicates this breaker includes a factory-installed 120VAC shunt trip accessory, allowing the breaker to be opened remotely.
Which GE panelboards are compatible with this 50A bolt-on breaker?
This Q-Line breaker is designed to bolt directly onto the bus connections of GE A-Series panelboards and GE AQ lighting panels.
Is the THQB2150ST1 suitable for reverse feed applications?
Yes, this thermal-magnetic circuit breaker is suitable for reverse feed installations.
Does this 50A breaker carry an HACR rating?
Yes, it is HACR rated, making it suitable for protecting heating, air conditioning, and refrigeration equipment circuits.
What type of wire can be used with the box lugs on this breaker?
The load side box lugs accept 8 to 3 AWG copper or aluminum wire.
What safety mechanisms are built into this Q-Line breaker?
It features a quick-make, quick-break mechanism and an internal common trip bar to ensure both poles trip simultaneously under fault conditions.
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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 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.