Square D QOB120HID Miniature Circuit Breaker
- 20A
- 1 Pole
- Bolt-On
Square D
QOB120HID
Miniature Circuit Breaker
Brand
Square D
SKU
QOB120HID
Quantity
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Square D QOB120HID - 20A 1 Pole Miniature Circuit Breaker
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Description
Built for commercial lighting applications, this single-pole 20A miniature breaker manages the high inrush currents associated with high-intensity discharge fixtures. It installs securely into Square D NQ and NQOD panelboards using a standard bolt-on connection. Featuring both SWD and HACR ratings, the unit provides reliable thermal-magnetic protection while serving as a functional switch for daily fluorescent or HID lighting control.Specifications
| Brand | Square D |
|---|---|
| Series | QOB |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QOB |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Al/Cu) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment, Handle Tie |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489, HACR, SWD |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HID Rated, SWD Rated, Visual Trip Indicator |
Product FAQs
6 answersWhich panelboards are compatible with the QOB120HID circuit breaker?
The QOB120HID is a bolt-on miniature circuit breaker designed specifically for Square D NQ and NQOD panelboards. It cannot be used in standard QO load centers, which require plug-on style breakers.
What does the HID suffix indicate on the QOB120HID breaker?
The HID designation means the breaker is rated for High Intensity Discharge lighting applications. It is engineered with larger contacts to handle the high inductive loads, harmonic currents, and frequent cycling inherent to metal halide, mercury vapor, and high-pressure sodium lighting systems.
How does the QOB120HID connect to the panelboard bus?
This breaker utilizes a bolt-on connection. It secures directly to the bus bar of NQ or NQOD panelboards using a screw, which provides a secure, vibration-resistant mechanical and electrical connection compared to plug-on alternatives.
What type of wire termination does the QOB120HID use?
This breaker is equipped with pressure plate terminals that accept 14 AWG to 8 AWG conductors. The terminals are rated for use with either aluminum or copper wire.
Can the QOB120HID be applied in DC voltage systems?
Yes, in addition to its standard AC ratings, this breaker is rated for 48VDC applications. When used in a DC system, it provides a maximum interrupting rating of 5kAIC.
Is the QOB120HID physically interchangeable with a standard QOB120 breaker?
Yes, QOB-HID breakers share the same physical dimensions and mounting footprint as standard QOB breakers. They can be used as a direct replacement in NQ or NQOD panels, offering the added benefit of handling high inductive lighting loads.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 205 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 3/11/26
Customers say these electrical breakers arrive exactly as ordered and work perfectly for their intended applications. They consistently praise the competitive pricing, which many report is significantly lower than local suppliers. Fast shipping and prompt delivery are frequently highlighted, with many receiving orders within days or even next-day delivery for urgent needs. The breakers arrive well-packaged and in excellent condition. Many reviews emphasize the company's extensive inventory availability, particularly for hard-to-find breakers. One customer experienced difficulty with order cancellation and was charged a restocking fee, which caused dissatisfaction.
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Rating
205 reviews
- BLBOOSTIX L.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/17/26QOB220
That's nice breakers!
- PHPaul H.Verified BuyerReviewingSquare D QOB330 - 30A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/5/26Quick shipping and delivery
Shipped and delivered on time for installation at one of our projects. Thank you!
- RMRick M.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Project Mgr
Just what I needed.
- DHDoug H.Verified BuyerReviewingSquare D QOB220 - 20A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Square D QOB breakers
As always, our order arrived timely, and accurate. You can’t beat their prices that’s why we have used this company for years.
- RKRyan K.Verified BuyerReviewingSquare D QOB230VH - 30A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/1/26Awesome
Worked great