Skip to content
Free Local Pickup ● Ship to Your Hometown Store
Pro & Contractor Accounts ● Apply for Net Terms
100,000+ Products ● Trusted American Hardware Brands
FAQ Shipping & Returns Order Lookup Contact Account
Square D QO 20 amps Arc Fault/Ground Fault Single Pole Circuit Breaker
Square D QO 20 amps Arc Fault/Ground Fault Single Pole Circuit Breaker
Square D QO 20 amps Arc Fault/Ground Fault Single Pole Circuit Breaker
Square D QO 20 amps Arc Fault/Ground Fault Single Pole Circuit Breaker
Square D QO 20 amps Arc Fault/Ground Fault Single Pole Circuit Breaker
Square D QO 20 amps Arc Fault/Ground Fault Single Pole Circuit Breaker

Square D QO 20 amps Arc Fault/Ground Fault Single Pole Circuit Breaker

Square D QO 20 Amp Arc Fault/Ground Fault Single Pole Circuit BreakerProtect your home with a compact, reliable AF/GF circuit breaker from Square D. This 20-amp, 120-volt single-po…

Square D MPN QO120DFC In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $98.99. Our online price is $109.99.
$109.99
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within — for same-day shipping
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Square D QO 20 Amp Arc Fault/Ground Fault Single Pole Circuit Breaker

Protect your home with a compact, reliable AF/GF circuit breaker from Square D. This 20-amp, 120-volt single-pole unit is designed for indoor use and features plug-in mounting for a straightforward install in QO panel systems. The combination of arc fault and ground fault protection helps detect dangerous arcing and leakage, delivering enhanced safety for living spaces, bedrooms, and other high-traffic areas where electrical faults are more likely to occur.

  • Brand / Series: Square D, QO
  • Product Type: Circuit Breaker (Arc Fault / Ground Fault)
  • Protection: Arc Fault and Ground Fault
  • Amps: 20 A
  • Volts: 120 V
  • Poles: Single Pole
  • Mounting Type: Plug-In
  • Packaging: Sleeve
  • Listings: UL Listed, CSA Listed
  • Indoor/Outdoor: Indoor
  • Dimensions: 1.5 in wide × 8 in high × 4.5 in deep

Key benefits

By combining arc fault and ground fault protection in a single, easy-to-install breaker, this unit helps reduce the risk of electrical fires and shock hazards on vital circuits. It’s designed to work with QO panels and provides a reliable, code-compliant solution for modern homes seeking enhanced safety without sacrificing space in the electrical panel.

Installation and use

Ideal for indoor residential installations, this plug-in AF/GF breaker fits standard QO panels in a sleeve-packaged format, offering a clean, professional appearance once installed. With a compact 1.5 in width and overall dimensions that suit typical panel spaces, it enables straightforward replacement or upgrade for existing AF/GF protection on 120 V circuits.

The Details Specifications

Brand Square D
SKU 3509569
UPC 785901401681
Unit 0
Case Pack Quantity 3 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 1 × 5 × 8
Weight 1 lbs
Cubic Feet 0.03414 ft³
Country of Origin MEXICO
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

What we offer
Free Local Pickup Ship to your hometown store
Pro & Gov Accounts Net terms · tax-exempt
Ships Nationwide From our distribution network
Independent Network Real hardware stores
$0.68 of every dollar spent at a local independent business stays in the community. At a national chain, it's about fifteen cents. Civic Economics, multi-city retail studies
Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

Find a local store →
Mon–Fri 6–5 PST
Independent hardware retailer? Join the network →
About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a co-op banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare