Internet #100028966

Model #QO140M200C

Store SKU #371044

QO 200 Amp 40-Space 40-Circuit Indoor Main Breaker Load Center with Cover

  • QO Interiors and Components provide time-tested reliability
  • Compatible with Square D QO standard circuit breakers
  • Includes combination flush/surface cover and main breaker
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Product Overview

The Square D QO 200 Amp 40-Space 40-Circuit Convertible Main Breaker Indoor Load Center is UL listed for residential, commercial and industrial power distribution. This load center is built with a shielded, copper bus bar that is plated for reliability. QO load centers are tested and listed only for QO circuit breakers. QO load centers are the "World's Finest" designed with industry leading features for flexible application. QO load centers include features engineered for fast installation and wire savings.
  • California residents
  • Includes a combination flush/surface indoor cover and factory-installed QOM2200VH main breaker
  • Accommodates plug-on secondary surge arrestor (sold separately)
  • Overhead/underground feed simply by rotating the device before installing
  • Single phase
  • Rated 120/240 VAC and 22,000 AIR short circuit current rating
  • The automatic flush adjusting cover requires less time to complete the job
  • Designed with straight-in mains to save expensive cable and time
  • Split branch neutral with terminal screws backed out offering with up to 50% more terminals than UL requires increases wiring flexibility saving installation time and simplifies wiring
  • Thermoplastic interior is among the most rugged in the industry
  • Slot/square drive screws let you use either standard flat blade screwdriver or square-head driver for positive drive and proper torque
  • Convertible mains allow you to meet changing job site requirements by field converting main breaker load centers to main lugs and vice versa
  • For protection from damage or theft on the job site, interiors can be easily removed with a single captive screw
  • 3 ground bar mounting locations (left, right and end) let you pick the easiest spot to wire
  • Made in the USA
  • Learn More About Electrical Panels Here in our Buying Guide.

Info & Guides

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Load center depth (in.)
Load center height (in.)
Load center width (in.)


Electrical Product Type
Load Center
Load Center Mounting Type
Load Center Type
Main Breaker
Maximum Amperage (amps)
Mounting Type
Number of Circuits
Number of Spaces
Phase Type
1 Phase
Product Weight (lb.)
33.33 lb
Voltage (volts)

Warranty / Certifications

Certifications and Listings
UL Listed
Manufacturer Warranty
Square D warrants its QO branch circuit breakers to be free from defects in material and workmanship under normal care and proper usage in a residential installation, for the lifetime of the load center in which it is installed. QO brand load centers are also covered under the same lifetime warranty.

Questions & Answers


Number of neutral, ground buses

Asked by Earl September 18, 2018

Hello, For the QO140M200C it uses a PK23GTA ground bar which has 23 holes in the bar. For the neutral there is more than what the UL standard requires. Regards, Customer Care Center

Does this include the ground bar? I've heard some of these don't.

Asked by Dracula December 31, 2016

Load center QO140M200C does not include the ground bar. Ground bar kit PK23GTA is ordered separately. Regards, Schneider Electric Customer Care

How do I add circuit breakers when all the ground bar and neutral bar screws are filled? Can I put two ground/neutral wires in each screw position?

Asked by Vic September 5, 2016

The actual answer is a little more subtle: Each NEUTRAL wire must have it's own screw terminal (this is true in any typical residential panel) However: in most panels, you can share a terminal for 2 GROUND wires. Off the top of my head I believe that all QO panels allow (2) #14 or (2) #12 wires per terminal -but only ground wires -not a combination of Neutral and Ground. This is not about size, it's about whether the wire is used for conducting electricity. Note: If your panel has a seperate ground bus, you cannot use it for a Neutral wire if the path for the neutral wire uses the enclosure as a part of the route back to the Neutral that comes from the power company. You can use the case for a Ground wire, but not a neutral.

I flip the main breaker off and it will not flip back on

Asked by Phil May 31, 2016

If main breaker handle does not properly operate, replacement main breaker required. QOM2200VH is 200A 2-pole main breaker kit utilized in QO140M200C, Series S, load centers.

Which QO breakers does this box take?

Asked by Jim8198 January 21, 2014

As the types of breakers were not indicated here, I believe you may be referring to the QO and QO-VH type breakers and what the difference is between them. If this is the case, the QO-VH is rated at 22K AIR and the QO is rated at 10K AIR. The AIR rating would be determined by your local utility and is the amount of fault current available from the utility service. To determine this information please consult your local utility, electrician, or electrical inspector.

Customer Reviews

  • 2 Customer Reviews
  • 4.5 out of 5 stars overall
100% of customers recommended.
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Fremont, CA
Great price. Good so far. Good service from HD.
Great price compared to local electrical supply houses (about half their price). Correct item arrived via UPS. We're installing now - so not yet functional. But the panel was well reviewed elsewhere, so we're not expecting problems. Nice to have the breaker as part of the panel for a backup main shutoff. Since we're upgrading from 100A to 200A, we're wanting a large # circuits (for Arc Fault in bedrooms, woodshop, etc). Hopefully this'll be our last sub panel. Note that (as in the Square D main panel we also bought) the main breaker is VERY stiff and VERY hard to throw - don't know if it'll be easier to throw in time. Lots of knock outs. Easy to install.
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great product
Quality :
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This for future project but with my research I will never need add another panel because of room to spare
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