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Square D QO140HID Miniature Circuit Breaker
- 40A
- 1 Pole
- Plug-On
Square D
QO140HID
Miniature Circuit Breaker
Brand
Square D
SKU
QO140HID
Quantity
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Square D QO140HID - 40A 1 Pole Miniature Circuit Breaker
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Description
Built for commercial and industrial applications, this 40A miniature circuit breaker handles high-intensity discharge (HID) lighting circuits with ease. The unit incorporates Square D's signature Visi-Trip indicator, allowing facility managers to quickly spot tripped circuits in busy electrical rooms. It installs into standard QO load centers, as well as NQ and NQOD panelboards. The plug-on mounting style ensures a secure connection for reliable power distribution. It is also HACR rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | QO140HID |
| Series | QO |
| Amperage | 40A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | QO |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | QO Load Centers, NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 8-2 AWG (Al/Cu) |
| Max Wire | 2 AWG |
| Min Wire | 8 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Standards | CSA C22.2 No. 5, HACR, RoHS, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, HID Rated |
Product FAQs
5 answersWhat does the HID suffix indicate on this circuit breaker?
The HID designation means this breaker is specifically rated for high-intensity discharge lighting loads, such as metal halide, mercury vapor, and high-pressure sodium lighting systems. It is designed to safely handle the high inrush currents associated with these fixtures.
Can the QO140HID be used in place of a standard QO140 breaker?
Yes, QO-HID circuit breakers are fully interchangeable with standard QO circuit breakers of the same amperage and pole configuration. They fit into the same panel spaces while providing the added rating for high-intensity discharge lighting.
Is the QO140HID suitable for heating, air conditioning, and refrigeration equipment?
Yes, this breaker is HACR rated, making it suitable for use with compatible heating, air conditioning, and refrigeration equipment that requires a 40A overcurrent protection device.
Does this breaker include a Visi-Trip indicator?
Yes, like standard QO breakers, the QO140HID features the Square D Visi-Trip indicator. This provides a clear visual cue when the breaker has tripped, allowing for rapid identification of faulted circuits in busy electrical panels.
What is the bolt-on equivalent of the QO140HID?
If your panelboard requires a bolt-on connection, the equivalent breaker is the QOB140HID.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 285 reviews.
Reviews Summary
Generated by AI from 100 most recent customer reviews
Last updated 6/13/26
Customers say these circuit breakers arrive quickly and work as described. Fast shipping and competitive pricing are frequently mentioned, with many noting same-day or next-day delivery. Users appreciate the wide inventory, particularly for hard-to-find older-style models unavailable locally. The products function reliably and arrive in good condition. Most customers report straightforward ordering and positive interactions. However, some experienced delivery delays or received incorrect items requiring reordering. A few noted concerns about condition upon arrival or customer service responsiveness.
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Rating
285 reviews
- GCGerard C.Verified BuyerReviewingSquare D QO130GFI - 30A GFCI Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/21/26Great !
I could not find the breaker in hardwood stores. Superbreakers took car of it in a week.
- RHRoy H.Verified BuyerReviewingSquare D QO280 - 80A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26Square D QO280 - 80A 2 Pole Miniature Circuit Breaker
Exactly as described
- KWKevin W.Verified BuyerReviewingSquare D QO120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/15/26Great Price
Brand spanking new!
- CEchristopher e.Verified BuyerReviewingSquare D QO115PDF - 15A Dual Function Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26My breakers
Had a hard time locating these breakers locally, when I did find 1 they wanted to charge me triple what superbreakers charged. Items delivered exactly when they said they would, were exactly what I ordered. Appreciated the ease of ordering, definitely my go to from this point on
- JCJerry C.Verified BuyerReviewingSquare D QO250 - 50A 2 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/8/26Great quality
No issues