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Square D QO220 Miniature Circuit Breaker
- 20A
- 2 Pole
- Plug-On
Square D
QO220
Miniature Circuit Breaker
Brand
Square D
SKU
QO220
Quantity
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Square D QO220 - 20A 2 Pole Miniature Circuit Breaker
New
Quantity
Quantity
Square D QO220 - 20A 2 Pole Miniature Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | QO220 |
| Series | QO |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120VAC, 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QO |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | QO Load Centers, NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Cu/Al) |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Visi-Trip Indicator |
| Standards | CSA C22.2 No. 5, HACR, RoHS, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated |
Quantity
Square D QO220 - 20A 2 Pole Miniature Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | QO220-R |
| Series | QO |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120VAC, 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QO |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | QO Load Centers, NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Cu/Al) |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Visi-Trip Indicator |
| Standards | CSA C22.2 No. 5, HACR, RoHS, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated |
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Description
Built for residential and commercial applications, the Square D QO220 delivers reliable thermal-magnetic protection for 120/240V circuits. This 2-pole, 20A miniature circuit breaker is a staple for standard electrical distribution. It mounts into Square D QO load centers, as well as NQ and NQOD panelboards. The plug-on design ensures a secure, tool-free connection to the busbar. Rated at 10 kAIC, it includes the signature Visi-Trip indicator to easily identify tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | QO220 |
| Series | QO |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120VAC, 120/240VAC, 48VDC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC, 10kA @ 120/240VAC, 5kA @ 48VDC |
| Frame Type | QO |
|---|---|
| Terminal Type | Pressure Plate |
| For Use With | QO Load Centers, NQ Panelboards, NQOD Panelboards |
| Wire Gauge | 14-8 AWG (Cu/Al) |
| 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 | Shunt Trip, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Visi-Trip Indicator |
| Standards | CSA C22.2 No. 5, HACR, RoHS, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated |
Product FAQs
8 answersWill the QO220 fit in a Square D Homeline load center?
No. The QO220 is exclusively designed for Square D QO load centers, NQ panelboards, and NQOD panelboards. It will not fit in Homeline (HOM) panels, which require a completely different busbar mounting interface.
How much panel space does the QO220 require?
This 2-pole breaker requires two standard 3/4-inch spaces, occupying a total of 1.5 inches on the panel busbar.
What is a direct replacement for an older Square D QO220CP?
The QO220 is the exact replacement for the QO220CP. The CP suffix simply indicates standard consumer or commercial retail packaging, but the internal breaker hardware and form factor are identical.
How does the Visi-Trip indicator function on this breaker?
When the breaker trips due to an overload or short circuit, the handle snaps to a center position and a bright red indicator appears in the Visi-Trip window. This allows you to quickly identify the tripped circuit without having to manually test the handle tension.
Is the QO220 rated for use with HVAC equipment?
Yes. This breaker is HACR rated, making it suitable for group motor applications like central air conditioners, heat pumps, and other heating or refrigeration equipment that require a 20A, 240V branch circuit.
Can I use aluminum wire with this 20-amp QO breaker?
Yes, the pressure plate terminals on the QO220 are rated for both copper and aluminum conductors ranging from 14 AWG to 8 AWG. Ensure you apply an approved oxide inhibitor when terminating aluminum wiring to prevent corrosion.
Are there UL classified alternatives to the Square D QO220?
Eaton manufactures the CHQ220, which is a UL classified direct replacement designed specifically to fit into Square D QO load centers. However, using the OEM Square D breaker is often preferred for exact fit and visual consistency.
Can this breaker be used in DC control circuits?
Yes, the QO220 carries a DC voltage rating of 48VDC with an interrupting capacity of 5kA. This makes it suitable for specific low-voltage DC control circuits, battery backups, and telecom distribution applications.
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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 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