ABB / General ElectricTHQB32035ST1
Free Shipping Over $99
ABB / General Electric THQB32030ST1 Miniature Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
ABB / General Electric
THQB32030ST1
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQB32030ST1
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
ABB / General Electric THQB32030ST1 - 30A 3 Pole Miniature Circuit Breaker
New
Quantity
Quantity
ABB / General Electric THQB32030ST1 - 30A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB32030ST1 |
| Series | THQB |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| 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 THQB32030ST1 - 30A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB32030ST1-R |
| Series | THQB |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Internal Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Similar Items
ABB / General ElectricTHQB32040ST1
40A 3 Pole Miniature Circuit Breaker
ABB / General ElectricTHQB32020ST1
20A 3 Pole Miniature Circuit Breaker
ABB / General ElectricTHQB32045ST1
45A 3 Pole Miniature Circuit Breaker
Description
Part of the Q-Line family, the GE THQB32030ST1 is a 3-pole miniature circuit breaker designed for commercial power distribution. It delivers 30 amps of reliable thermal-magnetic protection for branch circuits. This bolt-on breaker installs into GE A-Series panelboards and AQ lighting panels. It features box lug terminals that accept 14-8 AWG copper or 12-8 AWG aluminum wiring. Rated for 10kAIC at 240VAC, this model includes a factory-installed shunt trip for remote tripping applications.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB32030ST1 |
| Series | THQB |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | THQB |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Internal Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards are compatible with the THQB32030ST1 circuit breaker?
This bolt-on breaker is designed for use in GE A-Series panelboards and GE AQ lighting panels. It bolts directly to the bus connections in these load centers.
What does the ST1 suffix mean on this GE THQB breaker?
The ST1 suffix indicates that the breaker includes a factory-installed 120VAC shunt trip accessory. This allows the breaker to be tripped remotely using a control switch or emergency stop button.
What size wire is required for the box lugs on this 30A breaker?
The terminal lugs accept 14 to 8 AWG copper wire or 12 to 8 AWG aluminum wire. Ensure all connections are torqued to the manufacturer specifications during installation.
What type of trip mechanism does the THQB32030ST1 use?
It features a non-interchangeable thermal-magnetic trip unit with fixed long-time and instantaneous (LI) trip functions to protect against overloads and short circuits.
Why is this breaker listed under both ABB and General Electric?
ABB acquired GE Industrial Solutions in 2018. The Q-Line circuit breakers continue to be manufactured under the same THQB catalog numbers, so a new ABB breaker is a direct replacement for an older GE model with the same part number.
Can I use this breaker in a system requiring a 22kAIC rating?
No. The THQB32030ST1 has a maximum interrupting rating of 10kAIC at 240VAC. If your system requires a 22kAIC rating, you will need to source a THHQB series breaker instead.
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.