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Square D QO390VH Miniature Circuit Breaker
- 90A
- 3 Pole
- Plug-On
Square D
QO390VH
Miniature Circuit Breaker
Brand
Square D
SKU
QO390VH
Quantity
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Square D QO390VH - 90A 3 Pole Miniature Circuit Breaker
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Description
Engineered for commercial and residential applications, the QO390VH provides thermal-magnetic protection with a 22kAIC interrupt capacity. This three-pole component integrates seamlessly into standard QO load centers, NQ panelboards, and Speed-D switchboards. Featuring the signature Visi-Trip red indicator, maintenance personnel can instantly spot tripped circuits without manual testing, reducing downtime during electrical faults.Specifications
| Brand | Square D |
|---|---|
| Part Number | QO390VH |
| Series | QO |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC, 120/240VAC, 48VDC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC, 22kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QO |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | QO Load Centers, NQ Panelboards, NQOD Panelboards, Speed-D Switchboards |
| Wire Gauge | 4 AWG - 2/0 AWG (Al/Cu) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Visi-Trip Indicator |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, High Interrupting Capacity |
Product FAQs
5 answersCan I install the QO390VH in a Square D Homeline panel?
No. Square D QO and Homeline circuit breakers are not interchangeable. The QO390VH is only compatible with QO load centers, NQ panelboards, NQOD panelboards, and Speed-D switchboards.
How much panel space does the QO390VH require?
This 3-pole breaker requires three standard 3/4-inch spaces, taking up a total of 2.25 inches of width on the busbar.
What does the "VH" stand for in the QO390VH catalog number?
The "VH" suffix designates a high interrupting rating of 22kAIC at 120/240VAC. Standard QO breakers without the VH suffix typically have a 10kAIC rating.
Is there a bolt-on equivalent for the QO390VH?
Yes. If your panel requires a bolt-on connection rather than a plug-on connection, the direct equivalent is the QOB390VH.
Does the QO390VH feature a Visi-Trip indicator?
Yes. Like most Square D QO breakers, it includes the Visi-Trip visual indicator. When the breaker trips, the handle snaps to a midpoint position and a highly visible red flag appears to help you quickly identify the tripped circuit.
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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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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 286 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
286 reviews
- RBRobert B.Verified BuyerReviewingSquare D QO120 - 20A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars10/5/26Square D Q0120-20A circuit breaker
This device was delivered on time as advertised and it was in excellent condition. The installation process was simple and straightforward, and the unit worked perfectly when connected to the electric circuit.
I am completely satisfied and will utilize this component resource for my future electrical needs.
- 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