Square D QO-112M100P QO Conver...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$106.79
Square D QO-112M100P QO Convertible Main Lugs Load Center, Plug-On Neutral, NEMA 1

Square D QO-112M100P QO Convertible Main Lugs Load Center, Plug-On Neutral, NEMA 1

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Model: QO112L125PG

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

$106.79
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Square D QO Convertible Main Lugs Load Center, Plug-On Neutral, NEMA 1

The Square D QO Convertible Main Lugs Load Center is a 1 phase residential and light industrial load center built to accept QO breakers, ground fault interrupters, arc fault interrupters, and surge arresters. This convertible (Type A) main lug load center is available in ratings from 100A to 125A, giving electricians and homeowners the flexibility to select the amperage that matches the application while sharing the same 12-space, 12-circuit configuration, plug-on neutral (PoN) design, and NEMA 1 indoor enclosure rating across the range. A grounding bar is provided and the unit carries a UL Listed certification for code-compliant residential electrical distribution.

Key Features

  • Amperage Options: Offered in 100A and 125A ratings, allowing the panel to be matched to the connected load and service requirements.
  • Configuration: 1 phase load center with 12 spaces and 12 circuits for flexible branch circuit distribution.
  • Convertible Main Lugs: Type A convertible main lugs allow the panel to be upgraded to a main breaker configuration as needs change.
  • Plug-On Neutral (PoN): Straight-in wiring design saves wire, labor, and time during installation.
  • Enclosure: NEMA 1 indoor enclosure rated for protected indoor electrical installations.
  • Grounding Bar Included: Factory-installed grounding bar simplifies grounding connections.
  • Terminations: Design provides up to 50% more terminations for clutter-free wiring.
  • Durability: Engineered for superior performance and durability in residential and industrial electrical systems.
  • Breaker Compatibility: Accepts QO breakers, ground fault interrupters, arc fault interrupters, and surge arresters.

Certifications & Compliance

  • UL Listed
  • NEMA 1 Indoor Enclosure Rating

Technical Specifications

  • Range Of Product: QO
  • Number Of Spaces: 12
  • Number Of Circuits: 24
  • Number Of Tandem Circuit Breakers: 12
  • Amperage Options: 100A, 125A
  • Toxic Heavy Metal Free: Yes
  • Mercury Free: Yes
  • China ROHS Label: 1
  • ROHS Exemption Information: Yes
  • ROHS Eur In Scope: Yes
  • Legacy WEEE Scope: In
  • WEEE Product Category: 4
  • Returnability: Yes

Typical Applications

  • Residential Electrical Panel Installations
  • Load Center Replacements and Upgrades
  • New Construction Circuit Wiring
  • QO Breaker, GFCI, AFCI, and Surge Arrester Installation
  • Indoor Panel Installations Requiring NEMA 1 Protection

Why Square D?

Square D QO load centers pair a UL Listed, NEMA 1 rated enclosure with convertible main lugs and a plug-on neutral design, giving electricians and homeowners a flexible, code-compliant foundation for residential power distribution across the 100A to 125A range. With a factory-installed grounding bar and broad compatibility with QO breakers, GFCIs, AFCIs, and surge arresters, this load center delivers the reliability and durability professionals expect from Square D.

Manufacturer Resources

Product Specs

Product Type:
Load Center
Series:
QO
Configuration:
NEMA 1 Enclosure
Listing:
UL Listed
Department:
Electrical
Product Group:
Power Distribution
Connection Type:
Plug-On Neutral
Amperage Rating:
100A - 125A
Product Subgroup:
Panelboards & Load Centers
Product Depth:
3.74 in
Product Width:
14.25 in

Square D QO112L125PG – Frequently Asked Questions

1) Can a Square D QO main lugs load center be converted to a main breaker panel later?
Yes. The QO convertible load center uses Type A convertible main lugs, so the panel can be upgraded to a main breaker configuration later instead of being replaced. That matters when a sub-panel gets re-purposed as service equipment or when a disconnecting means has to be added at the panel.
2) Will this QO load center fit in a 14-1/2 inch stud bay or an existing recessed opening?
The QO convertible load center measures 14.25 in wide and 3.74 in deep. The width drops between studs on 16-inch centers, and the 3.74 in depth clears a standard 2x4 wall cavity, so it will flush-mount in a typical framed wall. Measure your existing cutout before swapping an older panel, since enclosure heights vary.
3) Should I order the 100A or the 125A version of the QO 12-space load center?
Both ratings share the same 12-space enclosure, plug-on neutral bus, and NEMA 1 housing, so the choice is purely about the connected load and the feeder. Order QO112M100P for the 100A rating and QO112L125PG for 125A. Size the panel to the service or feeder ampacity it is being fed from.
4) Can I install this QO load center outdoors or in a wet location?
No. The enclosure is NEMA 1, which is indoor-only protection against incidental contact and falling dirt. For an outdoor or damp exterior wall location you need a rainproof enclosure, such as the Eaton CH 125A main lug loadcenter or the ABB PAM ReliaHome load center, both of which are NEMA 3R.
5) What breakers fit a Square D QO plug-on neutral load center?
It takes QO breakers, including QO ground fault (GFCI) and arc fault (AFCI) breakers and QO surge arresters. The plug-on neutral bus is what makes that work without pigtails: GFCI and AFCI breakers land their neutral on the bus when you snap them in, which is where the wire and labor savings come from. Eaton BR and CH breakers are not interchangeable with QO.
6) What is the closest equivalent to the Square D QO-112M100P main lug load center from another manufacturer?
The Eaton BRP24L125GW is the nearest straight equivalent: a BR series main lug only loadcenter rated 125A with an aluminum bus in a NEMA 1 enclosure, matching the Square D QO convertible main lugs load center on main lug configuration, NEMA 1 indoor enclosure, and the 125A end of its 100A to 125A range. The difference that matters is breaker type - the Square D panel takes QO breakers, GFCIs, AFCIs, and surge arresters, while the Eaton panel takes BR breakers, so breaker stock does not carry over between them.
7) I need a main lug load center mounted outdoors - what should I use instead of the Square D QO panel?
The Square D QO convertible main lugs load center is a NEMA 1 enclosure, which is rated for protected indoor installations only. For an exterior wall or other wet location, use a NEMA 3R panel instead: the Eaton CH 125A main lug loadcenter comes in a NEMA 3R enclosure with a copper bus, and the ABB ReliaHome PAM load center uses a NEMA 3R aluminum enclosure with plug-on neutral. Both are main lug designs like the Square D, but each takes its own breaker line.
8) Can I swap a Square D QO load center for an Eaton BR or CH panel and keep my existing breakers?
No. The Square D QO convertible main lugs load center accepts QO breakers along with QO ground fault, arc fault, and surge arrester devices. The Eaton BRP24L125GW is a BR series loadcenter and the Eaton CH2L is a CH series loadcenter - each line has its own breaker interface. Changing panel brand or series means changing the full set of branch breakers, so plan the breaker order alongside the panel.
9) How many breakers can I actually get into a 12-space QO load center?
The enclosure provides 12 spaces, and QO tandem breakers let you double up, with up to 12 tandem breakers accepted. Full-size single-pole, two-pole, and tandem devices all mount in the same spaces, so your usable circuit count depends on which mix you install and on any circuit-count limit your local inspector applies.
10) Does this QO load center come with a ground bar, or do I buy one separately?
A grounding bar is included and factory-installed, so grounds and, in a sub-panel, the isolated equipment grounding conductors have a landing point out of the box. If you need additional grounding or neutral terminations beyond what the supplied bar provides, those are ordered separately.
11) Which of these load centers can be converted to a main breaker later?
The Square D QO load center uses Type A convertible main lugs, so the panel can be field upgraded to a main breaker configuration later. The Eaton BRP24L125GW and Eaton CH2L are both described as main lug only or main lug loadcenters, and the ABB ReliaHome PAM is a plug-on neutral main lug panel. If the job may need a main disconnect added after the fact, the convertible QO panel is the one built for that change.
12) Copper bus or aluminum bus, and which does this QO panel use?
If a copper bus is on your spec, look at the Eaton CH 125A main lug loadcenter, which lists a copper bus, versus the Eaton BR BRP24L125GW, which lists aluminum. Note the CH is a NEMA 3R enclosure rather than NEMA 1, so it changes the mounting location as well as the bus material.
How fast can I get the Square D QO112L125PG 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 QO112L125PG come with a warranty?
Absolutely. The Square D QO112L125PG 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 QO112L125PG?
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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