Square D QO 8-Space 16-Circuit...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$526.09
Square D QO 8-Space 16-Circuit 200A Convertible Main Breaker Load Center, NEMA 3R

Square D QO 8-Space 16-Circuit 200A Convertible Main Breaker Load Center, NEMA 3R

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Model: QO1816M200FTRB

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

$526.09
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Square D QO 8-Space 16-Circuit 200A Convertible Main Breaker Load Center, NEMA 3R

The Square D QO Load Center is engineered for residential and industrial electrical distribution, offering 8 spaces and 16 circuits with a 200A convertible main breaker configuration. Built with a NEMA 3R weatherproof enclosure, this load center is suitable for outdoor installations and operates on a 120/240 V AC, 1 phase, 3-wire system. It accepts QO circuit breakers, ground fault interrupters, arc fault interrupters, and surge arresters for flexible, code-compliant electrical protection, and is UL Listed for dependable performance.

Key Features

  • Configuration: 8 spaces and 16 circuits support QO tandem circuit breakers for flexible residential and light industrial branch circuit distribution.
  • Convertible Main Breaker: 200A convertible main breaker configuration allows the load center to be adapted to main breaker service.
  • Electrical Rating: 120/240 V AC, 1 phase, 3-wire system for standard residential and light industrial service.
  • Wire Range: Accepts AWG 4 through 250 kcmil aluminum/copper conductors for a wide range of feeder and branch circuit wiring.
  • Durable Construction: Welded galvannealed steel enclosure with a baked enamel gray finish resists corrosion and everyday wear.
  • Busbar Material: Tin-plated copper busbar delivers reliable conductivity and long-term connection integrity.
  • Environmental Rating: NEMA 3R weatherproof enclosure is suitable for outdoor and wet-location installations.
  • Operating Temperature: Rated for ambient operation from -5 °C to 40 °C.

Certifications & Compliance

  • UL Listed
  • NEMA 3R Weatherproof Enclosure
  • Mercury Free

Technical Specifications

  • Warranty: 18 months
  • Number Of Spaces: 8
  • Number Of Tandem Circuit Breakers: 8
  • Mercury Free: Yes
  • Range Of Product: QO
  • Device Composition: grounding bar (ordered separately)

Typical Applications

  • Residential Electrical Service Panels
  • Industrial Electrical Distribution Systems
  • Outdoor and Wet-Location Installations
  • Panelboard and Load Center Upgrades
  • New Construction and Renovation Wiring

Why Square D?

Square D QO Load Centers provide superior performance and durability, combining a tin-plated copper busbar, welded galvannealed steel enclosure, and a fully distributed neutral bar that supports QO plug-on neutral circuit breakers in any space. UL Listed and backed by an 18-month warranty, this load center is built for reliable, code-compliant electrical distribution in residential and industrial applications.

Manufacturer Resources

Product Specs

Product Type:
Load Center
Voltage Rating:
120/240V
Amperage Rating:
200A
Listing:
UL Listed
Configuration:
NEMA 3R Enclosure
Series:
QO
Product Material:
Galvanized Steel
Product Color:
Baked Enamel Gray
Department:
Electrical
Product Group:
Power Distribution
Product Subgroup:
Panelboards & Load Centers
Country of Origin:
United States
Product Width:
14.76 in
Product Height:
29.84 in

Square D QO1816M200FTRB – Frequently Asked Questions

1) Can the Square D QO1816M200FTRB load center be mounted outdoors?
Yes. The QO1816M200FTRB comes in a NEMA 3R weatherproof enclosure, so it is suited to outdoor and wet-location service installations. The enclosure is welded galvannealed steel with a baked enamel gray finish for corrosion resistance. Ambient operating range is -5 C to 40 C, so it is not intended for locations that drop below that.
2) How many circuits does the Square D QO 8-space panel actually hold?
Eight spaces, 16 circuits. That 16 comes from using QO tandem breakers, which fit two circuits into one space; the panel accepts up to 8 tandems. With full-size single-pole QO breakers only, you get 8 circuits.
3) What size service wire will the 200A QO load center lugs accept?
The main terminals take AWG 4 through 250 kcmil, aluminum or copper. That covers typical 200A copper and aluminum service entrance conductors as well as smaller feeder runs.
4) Do I need to order anything else to finish installing this load center?
Yes, the grounding bar is ordered separately, so plan on adding one plus your QO branch breakers. Breakers are not included with the enclosure.
5) Will GFCI and AFCI breakers work in this Square D QO panel?
It accepts QO circuit breakers, ground fault interrupters, arc fault interrupters, and surge arresters. The neutral bar is fully distributed, so QO plug-on neutral breakers land in any space rather than only in designated positions, which is what makes AFCI and GFCI layouts easy in a panel this small.
6) Can I use an ABB TL24415R in place of the Square D QO 200A main breaker load center?
No. The Square D QO1816M200FTRB is a 200A convertible main breaker load center rated 120/240 V AC, single phase, 3-wire, with 8 spaces and 16 circuits. The ABB TL24415R is a main lug only (MLO) load center rated 150A, 3-phase 4-wire, 208Y/120V in a NEMA 3R enclosure. Those are different services: the ABB unit has no main breaker and is built for a three-phase wye system, so it will not serve a single-phase 120/240 V residential or light-industrial service where the QO panel is specified.
7) What is the closest outdoor-rated alternative to the Square D QO1816M200FTRB load center if I need a plug-on neutral panel in an aluminum enclosure?
The Square D QO1816M200FTRB uses a welded galvannealed steel enclosure with a baked enamel gray finish and a NEMA 3R weatherproof rating, with a fully distributed neutral bar that accepts QO plug-on neutral breakers in any space. If you want the same outdoor NEMA 3R service in an aluminum enclosure, the ABB ReliaHome load center is a NEMA 3R aluminum-enclosure, plug-on neutral panel. Breakers are not interchangeable between the two: the Square D panel accepts QO circuit breakers, GFCI, AFCI, and surge arresters, so an ABB panel means a full change of breaker line.
8) What does convertible main breaker mean on this QO load center?
The 200A main breaker configuration is convertible, meaning the panel can be set up for main breaker service rather than being fixed as main lugs only. That matters when the panel is the service disconnect and the inspector wants a main in the enclosure.
9) Is the Square D QO 200A outdoor load center UL Listed?
Yes, it is UL Listed. It is also mercury free.
10) Does the ABB ReliaHome load center take the same breakers as the Square D QO panel?
No. The Square D QO1816M200FTRB is built around the QO breaker line and accepts QO circuit breakers, ground fault interrupters, arc fault interrupters, and surge arresters, with a distributed neutral bar for QO plug-on neutral breakers. The ABB ReliaHome is also a plug-on neutral design in a NEMA 3R aluminum enclosure, but plug-on neutral describes the neutral connection method, not cross-brand breaker interchange. If you are standardizing a property on QO stock, stay with the QO load center.
11) What is the busbar made of in the Square D QO1816M200FTRB?
Tin-plated copper. For a panel sitting outdoors in a 3R enclosure, plated copper bus is what keeps the breaker connections from degrading over time, and it is a point of difference against aluminum-bus panels.
How fast can I get the Square D QO1816M200FTRB 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 QO1816M200FTRB come with a warranty?
Absolutely. The Square D QO1816M200FTRB 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 QO1816M200FTRB?
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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