Square D QO312ML1 Load Center 3 Phase 12 Spaces 24 Circuits 100A NEMA 1 CSA UL

MPN: QO312ML1
UPC: 785901751052
PPN: SCH-QO312ML1

$402.15

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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 12 spaces and 12 circuits. This system provides 100A convertible main lugs in a NEMA 1 enclosure. This product is CSA and UL rated.

Features

Engineered for 3-phase, 4-wire electrical systems, this 125-amp maximum capacity load center features convertible main lugs to adapt to your specific building requirements. Offering 12 full spaces (and up to 24 circuits), it serves as the perfect high-efficiency sub-panel for safely distributing 120/240V power to retail HVAC units, commercial lighting banks, or light industrial machinery.
Built with shielded, premium tin-plated copper bus bars, this Square D QO panel guarantees superior electrical conductivity and exceptional thermal stability compared to standard aluminum alternatives. This rugged, oxidation-resistant construction virtually eliminates the risk of loose connections and heat degradation, ensuring uninterrupted power flow and minimizing expensive maintenance call-backs for facility electricians.
Housed in a heavy-duty, welded sheet steel NEMA 1 enclosure, this indoor-rated panel provides absolute protection against dust and accidental live contact. Its electrician-friendly design features optimized, straight-in main wiring and strategically placed knockouts, dramatically reducing installation labor time and making complex commercial panel upgrades clean and straightforward.
Fully cULus Listed and CSA Certified, this component meets the most rigorous North American National Electrical Code (NEC) standards for commercial power distribution. It is specifically designed for seamless, snap-in integration with industry-leading Square D QO circuit breakers including AFCI, GFCI, and surge protectors guaranteeing your commercial installation remains heavily protected and fully liability-compliant.

Documentation & Downloads

Specifications

Key Specifications

Country of Origin	United States

Complementary Attributes

Line Rated Current	125 A

Important Information Attributes

Persona Type Ids	EU, OM
Certificate Agency	cULus, CSA
Local Publishable Date	2026-07-14
Stocking Flag	N
Weee Scope	In
Scope Perimeter	Outside of 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	2
Function Option	Standard
Market Segmentation	Commercial
Awg Gauge	4 AWG...2/0 AWG aluminium/copper
Cover Type	order separately
Electrical Connection	lugs
Energy Efficiency Optimized	False
Load Center Type	main lugs
Number Of Circuits	24
Phase	3 phase 4 wires
Product Or Component Type	Load Center
Returnability	Yes
Sustainable Packaging	No
Pep Code	ENVPEP2212001EN
Width Nominal	362 mm
Short-circuit Current	10 kA
Package Weight(Lbs)	5.058 kg
Warranty (In Months)	18

Persona Type Names	End User, Original Equipment Manufacturer
Local Data Status	Publishable
Return Indicator	Y
Stock Policy	2
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	2
Function Option Id	STANDARD
Market Segmentation Id	COMMERCIAL
Product Kit Identifier	N
Box Number	7
Device Composition	grounding bar (ordered separately)
Enclosure Material	welded sheet steel
Installation Direction	vertical
Material	tin plated copper: busbar
Number Of Spaces	12
Product Availability	Stock - Normally stocked in distribution facility
Range Of Product	QO
Surface Finish	baked enamel Gray
Tightening Torque	main lugs 50 lb.in, 4 AWG...2/0 AWG, aluminium/copperCover 20 lb.in
Height Nominal	455 mm
[Ue] Rated Operational Voltage	120/240 V AC
Nbr. Of Units In Pkg.	1
Take-back	No
Customs Code	8537109150

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
Eu Rohs Directive	Compliant By Exemption
Packaging Made With Recycled Cardboard	No
Reach Regulation	Reference contains Substances of Very High Concern above the threshold

Ambient Air Temperature For Operation	-5 °C, -5 °C, 40 °C
Recycled Metal Content At Cr Level	0 %
Environmental Disclosure	ENVPEP2212001EN
Nema Degree Of Protection	NEMA 1 indoor enclosure
Packaging Without Single Use Plastic	No
Pep Code	ENVPEP2212001EN