ABB / General ElectricTHQB32045ST1
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Free Shipping Over $99
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ABB / General Electric THQB32045 Miniature Circuit Breaker
- 45A
- 3 Pole
- Bolt-On
ABB / General Electric
THQB32045
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQB32045
Quantity
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ABB / General Electric THQB32045 - 45A 3 Pole Miniature Circuit Breaker
New
Quantity
Quantity
ABB / General Electric THQB32045 - 45A 3 Pole Miniature Circuit Breaker
New
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB32045-R |
| Series | THQB |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels, ReliaGear RQ 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 Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Shunt Trip, Undervoltage Release, Padlock Attachment, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
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ABB / General Electric THQB32045 - 45A 3 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB32045-R |
| Series | THQB |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels, ReliaGear RQ 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 Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Shunt Trip, Undervoltage Release, Padlock Attachment, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
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Description
Built for heavy-duty commercial and industrial environments, this 45-amp miniature circuit breaker ensures consistent electrical safety. It fastens firmly into GE A-Series panelboards, AQ lighting panels, and ReliaGear RQ enclosures using a secure bolt-on mounting method. The non-interchangeable thermal-magnetic trip unit features quick-make/quick-break mechanisms to minimize arcing. This HACR-rated component provides a standard 10kA interrupting capacity at 240VAC.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THQB32045-R |
| Series | THQB |
| Amperage | 45A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, GE AQ Lighting Panels, ReliaGear RQ 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 Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Shunt Trip, Undervoltage Release, Padlock Attachment, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Product FAQs
4 answersWhich panelboards accept the THQB32045, and how does it differ from THQL breakers?
The THQB32045 is a bolt-on breaker designed for commercial GE A-Series panelboards, AQ lighting panels, and ReliaGear RQ panelboards. It bolts directly to the panel bus, whereas THQL breakers are plug-in style devices for residential load centers. The two mounting styles are not interchangeable.
What are the recommended torque specifications for the box lugs on the THQB32045?
The required tightening torque depends on the wire size used. For 8 AWG wire, torque to 40 in-lb. For 6 AWG to 4 AWG wire, torque to 45 in-lb. For 3 AWG wire, torque to 50 in-lb. The terminals accept both copper and aluminum conductors.
Is the THQB32045 circuit breaker HACR rated?
Yes, this breaker is HACR rated, meaning it is UL listed for use with heating, air conditioning, and refrigeration equipment that requires dedicated overcurrent protection.
Why might my THQB32045 breaker arrive with ABB branding instead of General Electric?
ABB acquired GE Industrial Solutions in 2018. Depending on the manufacturing date, the THQB32045 may feature either ABB or GE branding, but the physical dimensions, mounting, and electrical specifications remain identical.
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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.
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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.
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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.
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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.
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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.