Square D QO-3100BNF Series Cir...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$71.56
Square D QO-3100BNF Series Circuit Breaker Enclosure, Flush Cover

Square D QO-3100BNF Series Circuit Breaker Enclosure, Flush Cover

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Model: QO2100BNRB

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

$71.56
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Square D QO-3100BNF Series Circuit Breaker Enclosure, Flush Cover

The Square D QO Series Circuit Breaker Enclosure houses QO and QOB one, two, and three pole thermal magnetic circuit breakers, providing overcurrent protection and switching on AC and DC systems. This listing covers two configurations selectable at checkout: a 1-Phase, 2-space enclosure rated NEMA 3R for outdoor and wet-location use, and a 3-Phase, 3-space enclosure rated NEMA 1 for indoor use, both finished with a flush cover for a clean installation. Across both configurations the enclosure is UL Listed and built for the durability and corrosion resistance electrical contractors expect from Square D, making it suitable for residential, commercial, and industrial installations that demand dependable overcurrent protection indoors or in outdoor environments.

Key Features

  • Circuit Configuration: Available in 2-space (1-Phase) and 3-space (3-Phase) configurations sized to accept QO and QOB one, two, and three pole thermal magnetic circuit breakers.
  • Wiring Configuration: 3-wire configuration for standard AC and DC system compatibility.
  • Cover Type: Flush cover design for a clean, finished installation on every configuration.
  • Environmental Rating Range: Choose NEMA 3R for outdoor and wet-location installations or NEMA 1 for indoor installations, depending on the selected option.
  • Certified Performance: UL Listed and conforms to the electrical characteristics stated in the Underwriters Laboratories (UL) data sheet.
  • Durable, Corrosion-Resistant Build: Constructed for durability and corrosion resistance in demanding electrical environments.
  • Sustainability Attributes: Mercury free and toxic heavy metal free construction, supporting ROHS EU compliance.

Certifications & Compliance

  • UL Listed
  • NEMA 3R Rated (Outdoor Option)
  • NEMA 1 Rated (Indoor Option)
  • ROHS EU Compliant
  • Mercury Free

Technical Specifications

  • Range Of Product: QO
  • Available Configurations: 1-Phase, 2 Spaces, NEMA 3R Outdoor; 3-Phase, 3 Spaces, NEMA 1 Indoor, Flush Cover
  • Number Of Tandem Circuit Breakers: 0
  • Wiring Configuration: 3-wire
  • Cover Type: Flush cover
  • Product Certifications: UL Listed
  • Warranty: 18 months
  • Toxic Heavy Metal Free: Yes
  • Mercury Free: Yes
  • ROHS Eur In Scope: Yes
  • ROHS Exemption Information: Yes
  • China ROHS In Scope: No
  • WEEE Product Category: 5

Typical Applications

  • Residential Circuit Breaker Panels and Load Centers
  • Commercial and Industrial Overcurrent Protection
  • Outdoor and Wet-Location Electrical Installations (NEMA 3R Option)
  • Indoor Electrical Installations (NEMA 1 Option)
  • Renovation and New Construction Wiring Projects

Why Square D?

Manufactured by Schneider Electric, the Square D QO Series Circuit Breaker Enclosure delivers UL Listed protection built for durability and corrosion resistance, whether you need the NEMA 3R outdoor configuration or the NEMA 1 indoor, flush-cover configuration. With mercury-free, toxic heavy metal free construction, it gives contractors and electricians a dependable, code-compliant enclosure for professional electrical installations.

Manufacturer Resources

Product Specs

Product Type:
Circuit Breaker Enclosure
Series:
QO
Configuration:
NEMA 3R Enclosure
Listing:
UL Listed
Department:
Electrical
Product Group:
Wiring Devices
Standards:
ROHS EU
Product Subgroup:
Circuit Breakers

Square D QO2100BNRB – Frequently Asked Questions

1) Does the Square D QO breaker enclosure accept QOB breakers as well as QO?
Yes. The QO Series enclosure is sized to house QO and QOB one, two, and three pole thermal magnetic circuit breakers, which provide overcurrent protection and switching on both AC and DC systems.
2) Which Square D QO enclosure do I order for an outdoor disconnect versus an indoor one?
Two builds are offered. The QO2100BNRB is 1-phase with 2 breaker spaces and carries the NEMA 3R outdoor rating, so that is the one for exterior walls and wet locations. The QO3100BNF is 3-phase with 3 spaces and is NEMA 1 with a flush cover, which is an indoor, dry-location enclosure only. Don't put the NEMA 1 unit outside.
3) Is a NEMA 3R enclosure OK for an outdoor rain-exposed breaker on the side of a building?
NEMA 3R is the rating for outdoor and wet-location use, and the Square D QO enclosure in that configuration is NEMA 3R rated and UL Listed. It handles rain and weather exposure on an exterior wall. It is not a submersible or washdown rating, so for hose-down or dusty interiors you want a different enclosure type.
4) How many breakers fit in this Square D QO enclosure?
The QO enclosure is built on a 2 circuit-space configuration with no tandem breaker spaces, so you get two full-size poles. A two-pole QO breaker consumes both spaces. The 3-phase build steps up to 3 spaces for a three-pole breaker.
5) Does the Square D QO enclosure come with a breaker installed?
No. It is the enclosure only, sized to accept QO and QOB one, two, and three pole thermal magnetic breakers. Order the breaker separately, and match the pole count to the spaces you have: 2 spaces on the 1-phase NEMA 3R build, 3 spaces on the 3-phase NEMA 1 build.
6) What is the closest equivalent to the Square D QO NEMA 3R breaker enclosure from another manufacturer?
The Square D QO enclosure houses QO and QOB one, two, and three pole thermal magnetic breakers and is offered in a 1-phase, 2-space NEMA 3R outdoor version. The nearest cross-brand equivalent is the ABB Q-Line NEMA 3R surface-mount enclosed circuit breaker, which is also a NEMA 3R enclosed breaker unit and is rated 225A. The practical difference is breaker family: the Square D unit takes QO/QOB breakers, while the ABB unit is built around the Q-Line series, so whichever you choose should match the breakers you already stock on the site.
7) For an indoor panel location, is there an alternative to the NEMA 3R Square D QO enclosure?
Yes. The Square D QO line itself includes a 3-phase, 3-space NEMA 1 indoor version with a flush cover, so you can stay in the QO breaker family indoors rather than paying for an outdoor rating you do not need. If you are not tied to QO breakers, the Eaton ECC Series circuit breaker enclosure is a UL Listed enclosure built for the CCV frame type and is another indoor-panel option, though it will require Eaton breakers of that frame rather than QO/QOB.
8) What does the 3-wire configuration on the Square D QO enclosure mean for my feed?
3-wire means the enclosure is wired for two ungrounded conductors plus a neutral on the single-phase build. On the 3-phase, 3-space version you are landing three phase legs. Either way it is a straight overcurrent-protection and switching enclosure for AC or DC systems, not a full load center.
9) What is a flush cover on a breaker enclosure and where would I use it?
A flush cover sits even with the enclosure face for a finished look, and on the QO Series it comes on the 3-phase, 3-space NEMA 1 indoor build (QO3100BNF). That is the one to spec where the enclosure is going into a finished interior wall or a visible equipment room. The NEMA 3R outdoor version is the choice when the box is exposed to weather.
10) What else could I use instead of the Square D QO enclosure for a NEMA 3R outdoor breaker?
If you are not tied to the QO breaker line, ZenSupply carries the ABB Q-Line NEMA 3R surface-mount enclosed circuit breaker rated 225A, which comes as a complete enclosed breaker rather than an empty enclosure you populate. The Eaton ECC Series enclosure with a CCV frame type is another UL Listed option. Pick based on which breaker family your panel and spare stock already use, since QO enclosures take QO and QOB breakers.
11) Can I use this Square D QO enclosure as a service disconnect on a residential job?
It is a breaker enclosure for QO and QOB one, two, and three pole thermal magnetic breakers, and the description covers residential breaker panel and load center work along with commercial and industrial overcurrent protection, outdoor and wet-location installs, and renovation or new construction wiring. Whether it qualifies as your service disconnect depends on the breaker you install in it and your local inspector, not the enclosure alone.
12) Is the Eaton ECC enclosure a drop-in substitute for a Square D QO enclosure?
No. Both are UL Listed circuit breaker enclosures, but the Eaton ECC Series is built around the CCV frame type while the Square D QO enclosure is sized to accept QO and QOB one, two, and three pole thermal magnetic breakers. The breaker interiors are not interchangeable between the two, so swapping the enclosure means swapping the breakers as well. If the existing gear on the job is QO, stay with the QO enclosure.
13) Is the Square D QO breaker enclosure RoHS compliant for a green-build spec?
It is built mercury free and toxic heavy metal free, and is RoHS EU compliant. Recycled metal content at the Cr level is listed at 0 percent, and the packaging is not claimed as sustainable or single-use-plastic free, so if your spec requires packaging attributes it will not check that box.
How fast can I get the Square D QO2100BNRB 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 QO2100BNRB come with a warranty?
Absolutely. The Square D QO2100BNRB 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 QO2100BNRB?
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
Why buy the Square D QO2100BNRB from ZenSupply?
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