ABB / General ElectricTHQB2190ST1
Free Shipping Over $99
ABB / General Electric THQB2180ST1 Miniature Circuit Breaker
- 80A
- 2 Pole
- Bolt-On
ABB / General Electric
THQB2180ST1
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQB2180ST1
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
ABB / General Electric THQB2180ST1 - 80A 2 Pole Miniature Circuit Breaker
New
Quantity
Similar Items
ABB / General ElectricTHQB21100ST1
100A 2 Pole Miniature Circuit Breaker
ABB / General ElectricTHQB2160ST1
60A 2 Pole Miniature Circuit Breaker
ABB / General ElectricTHQB2150ST1
50A 2 Pole Miniature Circuit Breaker
Description
Part of the GE Q-Line family, the THQB2180ST1 is a two-pole, 80A miniature circuit breaker featuring a factory-installed 120VAC shunt trip for remote operation. It is built for commercial and industrial power distribution. This unit bolts securely into GE AQ lighting panels and A-Series panelboards, providing a vibration-resistant connection to the busbar. Rated at 10kAIC, it delivers reliable thermal-magnetic protection and is HACR rated for use with heating and cooling equipment.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB2180ST1 |
| Series | THQB |
| Amperage | 80A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | GE AQ Lighting Panels, GE A-Series Panelboards |
| 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, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (120VAC) |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Internal Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Product FAQs
7 answersWhich panelboards accept the THQB2180ST1 circuit breaker?
This breaker is designed specifically for GE AQ Lighting Panels and GE A-Series Panelboards. It will not fit standard plug-on load centers, as it requires a threaded busbar for its bolt-on connection.
What does the ST1 suffix mean on the THQB2180ST1 catalog number?
The ST1 suffix indicates the breaker is equipped with a factory-installed 120VAC shunt trip. This accessory allows the breaker to be opened remotely via a control signal, which is often required for emergency shutdown systems.
What are the acceptable wire sizes for the THQB2180ST1 terminals?
The box lugs accept 6 AWG to 1/0 AWG copper conductors, or 4 AWG to 1/0 AWG aluminum conductors. Always verify your wire size meets local electrical codes for an 80-amp circuit.
Is the THQB2180ST1 manufactured by ABB or General Electric?
ABB acquired GE Industrial Solutions in 2018. Because the Q-Line series continued under the same catalog numbers, you may receive a breaker branded as either ABB or GE. Both are identical in form, fit, and function.
How does the thermal-magnetic trip unit operate on the THQB2180ST1?
The breaker uses a fixed Long-Time and Instantaneous (LI) trip mechanism. The thermal element provides a delayed trip for sustained overloads, while the magnetic element trips instantaneously in the event of a short circuit.
Can I use the THQB2180ST1 in a standard GE residential load center?
No. The THQB series features a bolt-on mounting style intended for commercial panelboards. For standard GE residential plug-on load centers, you would need a THQL series breaker instead.
Does the THQB2180ST1 provide ground fault or arc fault protection?
No. This is a standard thermal-magnetic breaker. It does not include Ground Fault Equipment Protection (GFEP), Ground Fault Circuit Interrupter (GFCI), or Arc Fault Circuit Interrupter (AFCI) functions.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
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.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
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.
Search
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.