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Square D QO™ Main Lug Only / Convertible Loadcenters 400 A 240 VAC 42 Space

Mfg #: QONQ42LS400
BOR #: 2435316
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QO™ Series Main Lug Only/Convertible Loadcenters

  • QO® Circuit Breaker Loadcenters UL Listed
  • Designed to meet residential, commercial, and industrial requirements to protect electrical systems, equipment, and people.
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Product can be ordered only in multiples of
Brand Square D  
Series QO™  
Amperage 400 A  
NEMA Rating NEMA 1  
Circuit Breaker Type QOB ,, QOB-VH ,, QHB  
Voltage 240 VAC  
Number of Phases 1 phase  
Includes Order Cover Separately  
Wire Size 1/0 AWG - 750 kcmil  
Bus Material Aluminum  
Cover - Catalog Number (Surface) NC50NQVS  
Cover Type Flush/Surface  
Cover - Catalog Number (Flush) NC50NQVF  
Number of Spaces 42 Space  
Number of Circuits 42 Circuit  
Schneider Electric Specification Sheet Specification Sheet
NF/NQ Panelboard OSHPD Label Placement Drawing Installation Instructions - 80043-793-01 (pdf) Installation and Instruction Manuals
A Guide to Your Square D Electrical Distribution System - Brochure - 0102BR0201 (pdf) Brochure
Lighting Panelboard Catalog Number Comparison Data Bulletin - 1640DB0702 (pdf) Catalog
Load Centers: Section 1 - Digest 179 (2024) - Load-Centers-CSEDs-Digest-Catalog-0100CT2401-SEC-01 (pdf) Catalog
NQ Panelboards, Certificate, UL - 2010104-E33139B (pdf) Compliance
Square D NQ Circuit Breaker Panelboards Catalog - 1640CT0801 (pdf) Catalog
QO and Homeline Load Centers and Circuit Breaker Installation Instructions - S1B33894 (pdf) Installation and Instruction Manuals
Digest Catalog 01: Load Centers - 0100CT1901_SEC-01 (pdf) Catalog
Small and medium project solutions, available now - brochure - 998-21381316_GMA-US_Small+and+medium+project+solutions+available+now (pdf) Brochure
NQ/NQM Panelboards and QONQ Load Centers User Guide - Installation Instructions (80043-712) - 80043-712-06_Instruction+Bulletin_NQ-NQM+Panelboards+and+QONQ+Load+Centers (pdf) Installation and Instruction Manuals
Installing Qwik-Grip™ Fillers into Vacant Qwiklet Tabs | Schneider Electric Support

Tutorial for installing fillers into opened, unpopulated Quicklet Tabs on QO™ and Homeline Plug-On...

Installing Service Barrier in High Amp QO™ & Homeline 1ph Load Centers | Schneider Electric Support

Tutorial for installing the PKSB1HA Service Barrier into the QO™ & Homeline, 1 Phase, high ...

How to Remove Knock-Outs from Electric Box QO & Homeline Load Centers | Knockout Hole Punch

In this tutorial, we'll show you how to remove knockouts from QO™ and Homeline Load Centers,...

How to Remove Knock-Outs from Electric Box QO & Homeline Load Centers | Knockout Hole Punch

In this tutorial, we'll show you how to remove knockouts from QO™ and Homeline Load Centers,...

Removing Twistouts from QO™ & Homeline Load Centers | Schneider Electric Support

Tutorial for removing twist-outs from QO™ & Homeline Load Center indoor cover trim or outdoor...

Converting QO™ & Homeline NEMA1 1ph Load Centers for Bottom Feeding | Schneider Electric Support

Tutorial for using a double row QO™ & Homeline, 1 Phase, Convertible Main Load Center for bottom...

Installing Replacement Directory Label in QO™ and Homeline Load Centers | Schneider Electric Support

Tutorial for installing the directory label in QO™ and Homeline Load Centers and CSEDs (Common...

Installing Service Barrier into QO™ 3 Phase Series S0 Load Centers | Schneider Electric Support

Tutorial for installing the PKSB3BF Service Barrier into the QO™, 3-Phase, Series S0__, Fixed Main...

Installing Service Barrier in High Amp QO™ & Homeline 1ph Load Centers | Schneider Electric Support

Tutorial for installing the PKSB1HA Service Barrier into the QO™ & Homeline, 1 Phase, high ...

Locating QO Load Center Label for Catalog #, Series & Date Code | Schneider Electric Support

Tutorial for locating the catalog number, series number, and date code label on QO load centers. To...

Installing Service Barrier in QO™ Low Amperage Series S00 Load Centers | Schneider Electric Support

Tutorial for installing the PKSB1QOBF Service Barrier into the QO™, low-amperage, Series S00_, ...

Installing Service Barrier into QO™ 3 Phase 125A-225A Load Centers | Schneider Electric Support

Tutorial for installing the PKSB3 Service Barrier into the QO™, 3 Phase, Series S0_, (125A-225A)...

Installing Service Barrier in QO™ & Homeline 1 Phase Load Centers | Schneider Electric Support

Tutorial for installing the PKSB1LA Service Barrier into the QO™ & Homeline, 1 Phase, low amperage,...

Installing Filler Plate in Low Amp QO™ & Homeline 1ph Load Centers | Schneider Electric Support

Tutorial for installing the QOM1FP Main Circuit Breaker filler plate into the QO™ & Homeline, 1...

Installing QOFP & QO1FP Branch Breaker Filler Plate in QO™ Load Centers | Schneider Electric Support

Tutorial for installing the plastic QOFP and metal QO1FP branch breaker filler plates in QO™ Load...

Bottom Feeding QO™ & Homeline NEMA 3R Outdoor Rated Load Centers | Schneider Electric Support

Tutorial for wiring QO™ & Homeline NEMA 3R outdoor rated load centers from the bottom endwall by...

OLD Installing Bonding Screw on QO Load Centers | Schneider Electric Support

UPDATED Video Here: https://www.youtube.com/watch?v=aXPfxhSRM1k Demonstration of how to install the...

Installing Filler Plate in High Amp QO™ & Homeline 1ph Load Centers | Schneider Electric Support

Tutorial for installing the QOM2FP Main Circuit Breaker filler plate into the QO™ & Homeline, 1...

Installing Filler Plate in Low Amp QO™ & Homeline 1ph Load Centers | Schneider Electric Support

Tutorial for installing the QOM1FP Main Circuit Breaker filler plate into the QO™ & Homeline, 1...

Installing Service Barrier into QO™ 3 Phase 125A-225A Load Centers | Schneider Electric Support

Tutorial for installing the PKSB3 Service Barrier into the QO™, 3 Phase, Series S0_, (125A-225A)...

Installing Service Barrier in High Amp QO™ & Homeline 1ph Load Centers | Schneider Electric Support

Tutorial for installing the PKSB1HA Service Barrier into the QO™ & Homeline, 1 Phase, high ...

Converting QO™ 3ph Load Centers to Main Lug Operation | Schneider Electric Support

Tutorial for installing QOL3225 Main Lug Kit and Q2FP Filler Plate into QO™ 3 Phase, High-Amp...

Installing Service Barrier in QO™ & Homeline 1 Phase Load Centers | Schneider Electric Support

Tutorial for installing the PKSB1LA Service Barrier into the QO™ & Homeline, 1 Phase, low amperage,...

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