Square D QO403L100S QO Load Center 3 Phase 100A NEMA 1 3 Spaces 3 Circuits

MPN: QO403L100S
UPC: 785901207757
PPN: SCH-QO403L100S
UNSPSC: 39121101

$153.51

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Description

QO Load Centers offer premium features by allowing QO breakers, ground fault interrupters, arc fault interrupters, and surge arresters to be installed inside. QO Load Centers are designed for residential and industrial use to protect electrical systems, equipment, and people. They are available in both traditional and plug on neutral configurations. There is 3 types of mains available. There is main circuit breaker, main lugs, and generator panel. Single and three phase options are available. The bus bars are tin plated copper and are shielded. Indoor and outdoors enclosures are an option. QO Load Centers enable the use of a full complement of accessories. This 3 phase load center has 3 spaces and 3 circuits. This system provides 100A main lugs in a NEMA 1 enclosure. It also includes a surface cover, and is CSA and UL rated.

Features

This subpanel is specifically engineered for 3-phase, 3-wire or 4-wire configurations operating at 208Y/120V or 240V AC. It allows for balanced power distribution across commercial branch circuits, making it the perfect solution for dedicated light industrial machinery or specific HVAC equipment feeds.
The QO403L100S is designed as a fixed main lug only load center rated for 100 Amps. This configuration passes upstream main breaker protection directly to downstream branch circuits, allowing you to bypass the expense of an unnecessary secondary main breaker in subpanel installations.
It features 3 single-pole spaces allowing for up to 3 circuits, with zero tandem breaker compatibility to maintain strict code compliance. This compact footprint is purposely built for space-restricted utility closets where you need to isolate a small number of dedicated 3-phase loads without wasting wall space.
This premium Square D panel utilizes a high-conductivity, tin-plated copper busbar shield. The protective tin plating prevents copper oxidation and corrosion over time, guaranteeing a low-resistance electrical connection that runs cooler and minimizes long-term commercial maintenance callouts.
This heavy-duty load center boasts an industrial-grade 65 kA short circuit breaking rating to safely handle sudden, high-amplitude fault currents. This massive threshold ensures your installation easily satisfies stringent Canadian electrical code requirements near high-capacity utility transformers.
This product is fully CSA certified and cULus listed, arriving ready with a surface cover and a rugged NEMA 1 indoor rating. Constructed from welded sheet steel with a baked enamel grey finish, it resists scratching and environmental wear during rough-ins, delivering a clean setup that passes electrical inspections with flying colors.

Documentation & Downloads

Specifications

Key Specifications

Country of Origin	Mexico
Depth	84 mm

Weight	2640 g

Complementary Attributes

Ue Rated Operational Voltage	208Y/120 V AC, 240/120 V delta AC, 240 V delta AC

Line Rated Current	100 A

Important Information Attributes

Persona Type Ids	EU, LC, OM
Carbon Footprint Of The Distribution Phase A4	0.8924142857, 0.9 kg CO2 eq.
Carbon Footprint Of The Installation Phase A5	0.0020831042, 0 kg CO2 eq.
Carbon Footprint Of The Use Phase B2 B3 B4 B6	0.1 kg CO2 eq., 0.087341
Local Publishable Date	2026-07-14
Weee Scope	In
Scope Perimeter	At least in Europe
Reach Full Compliance Status	Reference contains Substances of Very High Concern above the threshold
Reach Compliance Directive	Reference contains Substances of Very High Concern above the threshold
Rohs Eur Status	Compliant By Exemption
Rohs Eur Full Compliance Status	Compliant By Exemption
With Recycled Cardboard	No
Product Contributes To Saved And Avoided Emissions	No
Tier	3
Function Option	Standard
Market Segmentation	Commercial
Awg Gauge	10 AWG...6 AWG copper
Device Composition	grounding bar (ordered separately)
Enclosure Material	welded sheet steel
Installation Direction	vertical
Material	tin plated copper: busbar
Number Of Spaces	3
Product Availability	Stock - Normally stocked in distribution facility
Range Of Product	QO
Software Version	EIME v5.9.4
Sustainable Packaging	No
Total Lifecycle Carbon Footprint	20 kg CO2 eq.
Database Version	2022-01
Height Nominal	330 mm
Certificate Agency	cULus
Customs Code	8537109150
Warranty In Months	18
Functional Unit Quantity	1
Reference Lifetime In Y	20

Persona Type Names	End User, Contractor, Original Equipment Manufacturer
Carbon Footprint Of The End Of Life Phase C1 To C4	0.3 kg CO2 eq., 0.2767978992
Carbon Footprint Of The Manufacturing Phase A1 To A3	19 kg CO2 eq., 19.0507058824
Local Data Status	Publishable
Return Indicator	Y
Weee Product Category	5
Eoli Availability Display	No need of specific recycling operations
Reach Full Compliance Status Id	CONTAINS_SVHC
Rohs Eur In Scope	Yes
Rohs Eur Conformity Date	2436
China Rohs In Scope	No
Without Single Use Plastic	No
Tier Id	3
Function Option Id	STANDARD
Market Segmentation Id	COMMERCIAL
Product Kit Identifier	N
Cover Type	surface cover
Electrical Connection	lugs
Energy Efficiency Optimized	False
Load Center Type	Fixed Mains (lugs)
Number Of Circuits	3
Phase	3 phase 4 wires
Product Or Component Type	Load Center
Returnability	Yes
Surface Finish	baked enamel Gray
Tightening Torque	main lugs 35 lb.in, 14 AWG...10 AWG, aluminium/coppermain lugs 50 lb.in, 3 AWG...1 AWG, aluminium/coppermain lugs 40 lb.in, 8 AWG...4 AWG, aluminium/copper
Weee Label	The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.
Data Source	extrapolated product
Width Nominal	146 mm
Nbr. Of Units In Pkg.	1
Short Circuit Current	65 kA
Functional Unit Description	Protect 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 858mm×361mm×95mm, comply with UL 67 and CSA22.2 with an available offer:& 10•Suitable for use on 120/240 Vac and 48 Vdc systems& 10•Rated 30 to 400 amps 2 to 60 circuits& 10•3/4" circuit breaker width& 10•Single and three phase
Functional Unit Unit	unit
Recyclability Potential In %	88

Environment Attributes Main

China Rohs Regulation	Product out of China RoHS scope , Product out of China RoHS scope. Substance declaration for your information.
Take Back	No
Mercury Free	Yes
Environmental Disclosure	ENVPEP2212001EN
Nema Degree Of Protection	NEMA 1 indoor enclosure
Packaging Without Single Use Plastic	No
Pep Code	ENVPEP2212001EN
Pcr Version	PCR-ed3-EN-2015 04 02
Type Of Verification For The Pep	Independent external review

Ambient Air Temperature For Operation	-5 °C, -5 °C, 40 °C
Recycled Metal Content At Cr Level	0 %
Carbon Footprint	20.3093421714
Eu Rohs Directive	Compliant By Exemption
Packaging Made With Recycled Cardboard	No
Reach Regulation	Reference contains Substances of Very High Concern above the threshold
Pep Verification Date	2023-08-01
Psr Version	PSR-0005-ed2-EN-2016 03 29