ABB / General ElectricTHQB1120
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Free Shipping Over $99
Free Shipping Over $99
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ABB / General Electric THQB1120HID Miniature Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
ABB / General Electric
THQB1120HID
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
THQB1120HID
Quantity
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ABB / General Electric THQB1120HID - 20A 1 Pole Miniature Circuit Breaker
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Description
Built for specialized lighting applications, the GE THQB1120HID is a 20-amp, single-pole miniature circuit breaker. It handles the high inrush currents of High-Intensity Discharge (HID) lighting systems without nuisance tripping. This breaker mounts into GE A-Series panelboards and AQ lighting panels. The bolt-on connection provides a reliable fit for commercial environments. It delivers a 10 kAIC interrupt rating at 120/240VAC and is HACR and SWD rated.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | THQB |
| Amperage | 20A |
| Poles | 1 |
| 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 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | HID (High Intensity Discharge) |
| Standards | CSA C22.2 No. 5, HACR Rated, SWD, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, HID Rated, SWD Rated, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Product FAQs
8 answersWhich panelboards accept the THQB1120HID circuit breaker?
This bolt-on breaker is designed specifically for installation in GE A-Series panelboards and GE AQ lighting panels.
What does the HID designation indicate on this GE circuit breaker?
The HID suffix means the breaker is rated for High-Intensity Discharge lighting applications. It is engineered to handle the high inrush currents generated by HID lighting systems without experiencing nuisance tripping.
What are the acceptable wire gauges for the THQB1120HID terminals?
The box lugs on this 20A breaker accept 14 to 8 AWG copper (Cu) conductors or 12 to 8 AWG aluminum (Al) conductors.
Will this breaker arrive with ABB or General Electric branding?
ABB acquired GE Industrial Solutions in 2018. Depending on the manufacturing date, the THQB1120HID may feature either ABB or GE branding. Both versions are identical in form, fit, and function.
Is the THQB1120HID rated for switching duty?
Yes, in addition to its HID rating, this breaker is SWD (Switching Duty) rated. This means it is approved for safely switching fluorescent lighting circuits on and off on a regular basis.
How does this breaker mount to the panelboard bus?
The THQB1120HID utilizes a bolt-on connection, which provides a secure, vibration-resistant attachment directly to the busbars in compatible GE commercial panels.
Does the THQB1120HID include ground fault or arc fault protection?
No, this is a standard thermal-magnetic circuit breaker that provides long-time and instantaneous trip functions for overload and short-circuit protection. It does not feature GFCI or AFCI sensing capabilities.
Can I install the THQB1120HID in a standard GE residential load center?
No, standard GE residential load centers typically require plug-on Q-Line breakers like the THQL series. The THQB1120HID is a bolt-on breaker designed specifically for commercial A-Series panelboards and AQ lighting panels.
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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.