Square D

Square D NQ472L4 NQ Panelboard Interior, 400A, 72 Circuits, 4-Wire, 240V AC, Aluminum

  • MPN: NQ472L4
  • UPC: 785901502531
  • PPN: SCH-NQ472L4

CAD

$2168.58

/ EA

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Spec sheet

Description

NQ Panelboard interiors may be used in a wide variety of applications including: commercial buildings; industrial buildings; data centers; stadiums; and offices. NQ Panelboards are versatile panelboards that feature a wide selection of bolt-on and plug-on branch circuit breakers, integral main circuit breakers, branch mounted SPDs, and a wide variety of ready to install accessory kits. The interiors are field convertible to support top or bottom feed. This main lugs interior is rated 400A for 240VAC and 48VDC, has a plated aluminum bus, and 72 pole spaces. NQ Panelboards are convertible from main lugs to main circuit breaker. NQ Panelboards offer 200% rated neutrals for nonlinear loads. Factory installed options include phenolic nameplates, power monitoring of mains and branch circuits, split bus interiors, and neutral assemblies which support up to 36 100A branch circuit breakers. NQ Panelboards are available with IP2X per IEC 60529 barriers for UL service entrance applications. Interior has an interrupt current rating of up to 65kA (depending upon the circuit breakers installed). This NQ panelboard interior is UL listed for applications in the USA and Canada. Interior accepts QOB, QOBVH and QHB bolt-on and QO, QOVH and QH plug-on branch circuit breakers. Standard mechanical main lug connections will accept copper or aluminum wire. NQ Panelboard interiors are available with plated aluminum or copper bus. 100A branch circuit breakers may be installed on both sides of NQ Panelboard interiors.

Features

  • Featuring an extra-high density, 72-circuit layout, this panelboard interior maximizes distribution capacity within a standard enclosure footprint. It allows commercial electricians and plant engineers to consolidate multiple sub-panels into one central location, accommodating a massive array of single-, double-, or three-pole breakers to easily handle future tenant fit-outs, machinery additions, or automated lighting upgrades.
  • Engineered with robust, high-conductivity copper buses rated for a full 400 Amps at 240V AC, this interior delivers reliable primary or secondary power distribution for high-demand electrical environments. The heavy-duty 400A busing mitigates heat buildup and voltage drop under continuous peak loads, making it ideal for large offices, retail spaces, and modern manufacturing facilities.
  • Engineered for ultimate versatility, the chassis seamlessly accepts both standard Square DTM QOTM plug-on breakers and QOB bolt-on circuit breakers. This dual compatibility allows contractors to meet rigid project specifications such as utilizing high-vibration resistant bolt-on breakers for industrial machinery while dropping in cost-effective plug-on components for standard commercial lighting circuits greatly simplifying on-site inventory management.
  • Shipped out of the box with a 400-amp, 3-phase, 4-wire main lug configuration, this interior easily converts into a main circuit breaker panelboard using simple, field-installable conversion kits. This agile design allows you to quickly adapt to shifting design-build requirements on the job site or seamlessly upgrade sub-panels to primary service entrance equipment without scrapping the original core hardware.

Documentation & Downloads

Specifications

Key Specifications

Country of OriginCosta Rica

Physical Attributes

Enclosure Nominal Height62 in
Enclosure Nominal Width20 in

Complementary Attributes

Line Rated Current400 A

Important Information Attributes

Persona Type IdsEU, LC, OM
Circuit Breaker TypeQOB, QOB-VH, QHB
Certificate AgencyCSA, UL
[Iu] Rated Interrupted Current10 kA, 22 kA, 65 kA
Carbon Footprint Of The End-of-life Phase [C1 To C4]33 kg CO2 eq., 32.785535349
Carbon Footprint Of The Manufacturing Phase [A1 To A3]90 kg CO2 eq., 90.4217735
Local Data StatusPublishable
Return IndicatorY
Stock Policy2
Weee Product Category5
Eoli Availability DisplayNo need of specific recycling operations
Reach Full Compliance Status IdNOT_CONTAINING_SVHC
Rohs Eur In ScopeYes
Rohs Eur Conformity Date2532
China Rohs In ScopeNo
With Recycled CardboardYes
Product Contributes To Saved And Avoided EmissionsNo
Tier1
Function OptionStandard
Market SegmentationCommercial
Energy Efficiency OptimizedFalse
Materialaluminium
Phase3 phase 4 wires
Product Or Component Typeinteriors
Software Versionv5.9.4
Total Lifecycle Carbon Footprint128 kg CO2 eq.
Database Version2022-01
Pcr VersionPEP-PCR-ed4-2021 09 06
Type Of Verification For The PepIndependent external review
Functional-unit DescriptionProtect persons during 20 years against direct contact with live parts and allow grouping monitoring, control and protection devices in a single enclosure or a cabinet having the following dimensions 1270 mm x 508 mm x 146.05 mm,and NEMA 1& 10- followed standard: UL 67 UL 50E and CSA22.2
Functional-unit Unitunit
Energy Model - Manufacturing [A1-a3]Energy model used: Electricity Mix; Production mix; Low voltage; MX
Energy Model - Use [B6]Electricity Mix; Production mix; Low voltage; MX / Electricity Mix; Production mix; Low voltage; US / Electricity Mix; Production mix; Low voltage; CA
Recyclability Potential In %93
Width Nominal10.44 in
Nbr. Of Units In Pkg.1
Take-backNo
Customs Code8538100000
Persona Type NamesEnd User, Contractor, Original Equipment Manufacturer
Tightening Torque42.37-42.37 N.m 53.48-152 mm² (1/0 AWG...300 kcmil)31.07-33.90 N.m 53.48-380 mm² (1/0 AWG...750 kcmil), 31.07-33.90 N.m 53.48-177.3 mm² (1/0 AWG...350 kcmil), 62.14-62.14 N.m 53.48-380 mm² (1/0 AWG...750 kcmil), 62.14-62.14 N.m 53.48-152 mm² (1/0 AWG...300 kcmil), 42.37-42.37 N.m 53.48-380 mm² (1/0 AWG...750 kcmil)
Connections - Terminalslug line 1/0 AWG...750 kcmil aluminium, lug neutral 1/0 AWG...750 kcmil aluminium
Carbon Footprint Of The Distribution Phase [A4]4.0529776163, 4 kg CO2 eq.
Carbon Footprint Of The Installation Phase [A5]0.5190721459, 0.5 kg CO2 eq.
Carbon Footprint Of The Use Phase [B2 B3 B4 B6]0 kg CO2 eq., 0.0254774201
Local Publishable Date2025-11-18
Stocking FlagN
Weee ScopeIn
Scope PerimeterOutside of Europe
Reach Full Compliance StatusFree of Substances of Very High Concern above the threshold
Reach Compliance DirectiveFree of Substances of Very High Concern above the threshold
Rohs Eur StatusCompliant
Rohs Eur Full Compliance StatusCompliant
China Rohs Label1
Without Single Use PlasticNo
Tier Id1
Function Option IdSTANDARD
Market Segmentation IdCOMMERCIAL
Product Kit IdentifierN
Load Center Typemain lugs
Number Of Spaces72
Product AvailabilityStock - Normally stocked in distribution facility
ReturnabilityYes
Sustainable PackagingNo
Pep CodeENVPEP2303004EN
Pep Verification Date2023-07-15
Psr VersionPSR-0005-ed2-2016 03 29
Data Sourceextrapolated product
Functional-unit Quantity1
Reference Lifetime In Y20
Energy Model - Installation [A5]Electricity Mix; Production mix; Low voltage; MX / Electricity Mix; Production mix; Low voltage; US / Electricity Mix; Production mix; Low voltage; CA
Energy Model - End Of Life [C1-c4]Electricity Mix; Production mix; Low voltage; MX / Electricity Mix; Production mix; Low voltage; US / Electricity Mix; Production mix; Low voltage; CA
Height Nominal57 in
[Ue] Rated Operational Voltage240 V AC48 V DC
Package Weight(Lbs)14.06 kg
Warranty (In Months)18

Environment Attributes Main

China Rohs RegulationProduct out of China RoHS scope , Pro-active China RoHS declaration (out of China RoHS legal scope)
Reach Free ShvcYes
Toxic Heavy Metal FreeYes
Carbon Footprint127.8048360313
Eu Rohs DirectiveCompliant
Packaging Without Single Use PlasticNo
Reach RegulationFree of Substances of Very High Concern above the threshold
Pep Verification Date2023-07-15
Psr VersionPSR-0005-ed2-2016 03 29
Take BackNo
Recycled Metal Content At Cr Level0 %
Mercury FreeYes
Environmental DisclosureENVPEP2303004EN
Packaging Made With Recycled CardboardYes
Reach Free Of SvhcYes
Pep CodeENVPEP2303004EN
Pcr VersionPEP-PCR-ed4-2021 09 06
Type Of Verification For The PepIndependent external review

General Attributes

Phase3 phase 4 wires
Product Or Component Typeinteriors

Contractual Warranty Attributes

Warranty Period18 months
Warranty18 months
NQ Panelboard Interior, 400A, 72 Circuits, 4-Wire, 240V AC, Aluminum
NQ Panelboard Interior, 400A, 72 Circuits, 4-Wire, 240V AC, Aluminum
NQ Panelboard Interior, 400A, 72 Circuits, 4-Wire, 240V AC, Aluminum
NQ Panelboard Interior, 400A, 72 Circuits, 4-Wire, 240V AC, Aluminum
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