Square D QO 20A 1-Pole Combina...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$129.09
Square D QO 20A 1-Pole Combination ARC-Fault/Ground-Fault Circuit Breaker, 120VAC Plug-In

Square D QO 20A 1-Pole Combination ARC-Fault/Ground-Fault Circuit Breaker, 120VAC Plug-In

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Model: QO120PAFGF

In Stock (leaves warehouse same day if ordered before 3pm ET)

$129.09
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Square D QO 20A 1-Pole Combination ARC-Fault/Ground-Fault Circuit Breaker, 120VAC Plug-In

The Square D QO 20A 1-Pole Combination ARC-Fault/Ground-Fault Circuit Breaker is a plug-in thermal magnetic breaker for overcurrent protection with combined arc-fault and Class A 6mA ground-fault detection on 120V AC branch circuits. Part of the Square D QO range, it uses an over-center, trip-free toggle mechanism with quick-make, quick-break action. It accepts AWG 14 through AWG 8 copper or aluminum conductors, carries a 10kA interrupt rating, and requires 1 space in QO-series load centers. The unit is UL Listed for dependable, code-compliant circuit protection.

Key Features

  • Electrical Rating: 20A, 1-pole, 120V AC with a 10kA interrupt rating for dependable overcurrent protection.
  • Combination Protection: Combines combination ARC-fault protection with Class A 6mA ground-fault protection in a single device.
  • Wire Range: Accepts AWG 14...AWG 8 copper or aluminum conductors.
  • Connections: Plug-on neutral terminal connections for plug-in installation in compatible QO load centers.
  • Trip Mechanism: Over-center, trip-free toggle mechanism with quick-make, quick-break action for positive switching.
  • Panel Space: Requires 1 space in QO-series panelboards and load centers.
  • Series: Square D QO range, for one, two, and three pole thermal magnetic circuit breaker applications on AC and DC systems.

Certifications & Compliance

  • UL Listed
  • Mercury Free
  • ROHS Eur Compliant with Exemptions
  • TAA Compliance

Technical Specifications

  • Sustainable Packaging: Yes
  • Mercury Free: Yes
  • Number Of Spaces Required: 1
  • Packaging Without Single Use Plastic: Yes
  • Tier Id: 1
  • ROHS Eur In Scope: Yes
  • Recycled Metal Content At Cr Level: 0 %
  • H And D Enrichment Function: DF
  • Poles Description: 1P
  • H And D Enrichment Assignment: yes
  • Serviceability: No
  • With Recycled Cardboard: Yes
  • WEEE Product Category: 5
  • Range Of Product: QO
  • Compliance: TAA
  • Relationshiptype: Compatible relationship
  • Total Lifecycle Carbon Footprint: 10 kg CO2 eq.
  • China ROHS In Scope: No
  • Return Indicator: Y
  • Take Back: No
  • Tier: 1
  • Returnability: Yes
  • Field Service Division: PPIBS

Typical Applications

  • Residential and Light Commercial Load Centers
  • Branch Circuit Overcurrent Protection
  • Arc-Fault and Ground-Fault Protected Circuits
  • Panelboard Upgrades and Retrofits
  • New Construction and Renovation Wiring

Why Square D?

Square D QO breakers pair a proven over-center, trip-free toggle mechanism with combination ARC-fault and Class A 6mA ground-fault protection for dependable, code-compliant performance. Backed by UL Listing and an average life duration of 15 years, this QO breaker is built for electricians and contractors who need reliable protection they can install with confidence.

Manufacturer Resources

Product Specs

Product Type:
GFCI/AFCI Circuit Breaker
Voltage Rating:
120V
Amperage Rating:
20A
Configuration:
1-Pole
Connection Type:
Plug-In
Listing:
UL Listed
Series:
QO
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Circuit Breakers
Product Height:
2.72 in
Product Width:
0.75 in
Country Of Origin:
United States
Product Depth:
4.09 in

Square D QO120PAFGF – Frequently Asked Questions

1) Does this Square D QO breaker give both arc-fault and ground-fault protection, or do I need two devices?
One device covers both. The QO120PAFGF combines combination arc-fault detection with Class A 6mA ground-fault protection plus standard thermal magnetic overcurrent protection at 20A, 120V AC. On a kitchen or laundry circuit that needs both AFCI and GFCI, you do not add a GFCI receptacle downstream for the breaker's sake.
2) Is the QO120PAFGF a plug-on neutral breaker or does it have a pigtail?
It uses plug-on neutral terminal connections, so it picks up neutral from the bus when you snap it into a compatible QO load center instead of running a white pigtail to the neutral bar. If your panel is an older QO without a plug-on neutral bus, that matters. By contrast, the Eaton CH Series Class A GFCI breaker in the comparable set is the pigtail style.
3) What is the closest dual-function AFCI/GFCI equivalent to the Square D QO120PAFGF for an ABB or GE style load center?
The Square D QO120PAFGF is a plug-in QO-series breaker, so it belongs in QO panelboards and load centers, not in an ABB bus. For an ABB Q-Line panel, the comparable device is the ABB Q-Line THQL11 DFCI dual function AFCI/GFCI circuit breaker, which pairs the same two protection types in one breaker. Match the breaker family to the panel brand first, then confirm amperage and pole count.
4) The QO120PAFGF is single pole and 120V. What do I use for a 240V two-pole ground-fault circuit?
The QO120PAFGF is a 1-pole breaker rated 120V AC and takes one space, so it cannot serve a two-pole 240V load such as a spa or well pump. For that opening, a two-pole ground-fault breaker such as the ABB THQB 2-pole GFT breaker rated 10kA at 240V covers the two-pole 240V case. Confirm the panel line accepts THQB-style breakers before specifying it.
5) If the circuit only needs ground-fault protection and not arc-fault, is there a simpler alternative to the QO120PAFGF?
Yes. The QO120PAFGF combines combination arc-fault detection with Class A 6mA ground-fault protection in one 20A 1-pole device, which is more than a receptacle circuit needs where only GFCI protection is required. A ground-fault-only breaker such as the ABB THQL Q-Line Model 3 self-test GFCI breaker or the Eaton CH Series Class A GFCI breaker with pigtail covers ground fault alone. Each of those is sized for its own panel line, so verify the load center brand before ordering.
6) Will an ABB THQL plug-on neutral ground fault breaker drop into the same slot as the Square D QO120PAFGF?
No. Both are plug-in style breakers, and the QO120PAFGF uses plug-on neutral terminal connections, but the ABB THQL series plug-on neutral ground fault breaker rated 10kAIC is built for the THQL bus rather than a QO bus. The stab geometry and panel line differ, so it is not a drop-in replacement for a QO breaker even though the connection style reads the same on paper.
7) What wire size can I land on the Square D QO120PAFGF?
The lug accepts AWG 14 through AWG 8, copper or aluminum. That covers the 12 AWG copper you would normally run on a 20A branch circuit and leaves room if the circuit was wired heavier for voltage drop.
8) What is the interrupt rating on this Square D QO AFCI/GFCI breaker?
10kA at 120V AC. That is the standard residential and light commercial AIC level, so it suits most single-family and multi-family service entrances fed from a typical utility transformer. The ABB THQL plug-on neutral ground fault breaker and the ABB THQB 2-pole GFT are also listed at 10kA if you are matching AIC across panels of different brands.
9) Is the Square D QO120PAFGF UL Listed and TAA compliant for a government job?
It is UL Listed and the listing data states TAA compliance, with country of origin the United States. Mercury free as well, which some institutional specs call out.
10) How much room does the QO120PAFGF need in the panel?
One space, with the breaker body measuring 4.09 x 2.72 x 0.75 inches. The 0.75 inch width is why it occupies a single QO pole position, so swapping a standard 20A single-pole QO for this combination AFCI/GFCI does not cost you extra spaces in a full panel.
11) Can I use this breaker to upgrade an existing panel that only has standard breakers?
Yes, that is one of its intended uses. The QO120PAFGF is meant for panelboard upgrades and retrofits as well as new construction, and because it needs only 1 space it replaces a standard single-pole 20A QO breaker position directly, provided the panel is a QO load center with a plug-on neutral bus.
12) What part number do I order for the Square D QO 20A combination AFCI/GFCI breaker?
QO120PAFGF is the manufacturer part number, Square D QO series, 20A 1-pole 120V plug-in. There is a single configuration, so no suffix or finish to specify on the order.
How fast can I get the Square D QO120PAFGF delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Square D QO120PAFGF come with a warranty?
Absolutely. The Square D QO120PAFGF is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Square D QO120PAFGF?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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