Internet #204246794

Model #QO142M200P

QO 200 Amp 42-Space 52-Circuit Indoor Main Breaker Plug-On Neutral Load Center without Cover

  • Less wiring, clean gutter, fast installation with Plug-On Neutral
  • Compatible with any QO circuit breaker (except CTL Tandems)
  • Includes main breaker and shielded copper bus bar
  • See More Details

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Product Overview

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The Square D QO 200 Amp 42-Space 42-Circuit Convertible Main Breaker Indoor Plug-on Neutral Load Center for Plug-on Neutral breakers 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
  • Cover sold separately
  • Engineered for a quick plug-on neutral breaker connection on every circuit, fewer connections, faster installation, and no pigtails frees up gutter space
  • Includes a factory-installed 200 Amp main breaker, cover QOC42UF or QOC42US sold separately
  • 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
  • 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 assembly 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
Plug-On Neutral
Number of Circuits
Number of Spaces
Phase Type
1 Phase
Product Weight (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


add generater to box

Asked by rrookie October 16, 2016

Generator interlock kit QOCGK2C interlocks QOM2 2-pole main circuit breaker (150-225 Ampere) with a back-fed QO 2-pole (15-125 Ampere) branch circuit breaker. A retaining means is also provided for the back-fed QO branch breaker.

Customer Reviews

  • 1 Customer Reviews
  • 5 out of 5 stars overall
100% of customers recommended.
Overall Ratings
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Good investment
Quality :
Value :
well made, good features. Lifetime warranty with room to grow. I am somewhat picky about my purchases. No complaints here.
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