ABB / General ElectricTHQB32070ST1
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ABB / General Electric THQB32080ST1 Miniature Circuit Breaker
- 80A
- 3 Pole
- Bolt-On
ABB / General Electric
THQB32080ST1
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQB32080ST1
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ABB / General Electric THQB32080ST1 - 80A 3 Pole Miniature Circuit Breaker
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Description
Designed for advanced control requirements, the GE THQB32080ST1 is a 3-pole, 80A miniature circuit breaker. It integrates standard thermal-magnetic protection with a factory-installed 120VAC shunt trip, enabling remote disconnection of the circuit for safety or automation purposes. This Q-Line breaker utilizes a bolt-on mounting system, ensuring a secure connection within GE A-Series panelboards. Rated at 10 kAIC at 240VAC, the internal common trip mechanism guarantees simultaneous opening.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB32080ST1 |
| Series | THQB |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC, 10kA @ 120/240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels |
| Wire Gauge | 6-1/0 AWG (Cu), 4-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 6 AWG (Cu), 4 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Non-Interchangeable Trip, Quick-Make/Quick-Break |
Product FAQs
8 answersWhat does the ST1 suffix mean on the THQB32080ST1 part number?
The ST1 designation indicates that this breaker includes a factory-installed 120V AC shunt trip accessory. This allows the breaker to be tripped remotely for emergency shutdowns or automated control systems.
Which electrical panels will accept this breaker?
This bolt-on circuit breaker is explicitly designed for compatibility with GE A-Series Panelboards and GE AQ Lighting Panels.
What are the wire gauge requirements for the terminal lugs?
The integrated box lugs accept copper wire ranging from 6 AWG to 1/0 AWG, or aluminum wire ranging from 4 AWG to 1/0 AWG.
Can the THQB32080ST1 be reverse fed?
Yes, this ABB/GE Q-Line molded case circuit breaker is officially rated as suitable for reverse feed installations.
Is this breaker rated for heating and cooling equipment?
Yes, the THQB32080ST1 carries a standard HACR (Heating, Air Conditioning, and Refrigeration) marking, allowing it to serve as overcurrent protection for compatible HVAC motor circuits.
How does a bolt-on connection differ from a plug-on breaker?
Bolt-on breakers like this model physically screw directly into the panelboard bus bar. This creates a highly secure, vibration-resistant connection required in most commercial and industrial applications.
Can I use this 240V rated breaker on a 120/208V system?
Yes, while the maximum voltage limit is 240V AC, it is fully rated to operate safely on 120/208V AC three-phase systems while maintaining its 10kA interrupting capacity.
Does this breaker provide ground fault or arc fault protection?
No. This unit relies on standard thermal-magnetic technology for overload and short-circuit protection. It does not contain GFCI or AFCI safety circuitry.
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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.