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SQUARE D Load Center: 125 A Amps, 208Y/120/240V AC, 12 Spaces, 65kA, 0 Max. No. of Tandem Breakers - Square D QO - Main Lug Load Centers
SQUARE DSquare D QO - Main Lug Load Centers

SQUARE D Load Center: 125 A Amps, 208Y/120/240V AC, 12 Spaces, 65kA, 0 Max. No. of Tandem Breakers

The Square D QO Main Lug Load Center (MPN QO312L125GRB) is a 125 A, 3-phase unit rated for 208Y/120/240V AC with a 65kA short circuit current rating. It offers 12 spaces, zero tandem breaker capacity, and includes a…

SKU 3G-OTH-609659

Brand
SQUARE D
Item
Load Center: 125 A Amps, 208Y/120/240V AC, 12 Spaces, 65kA, 0 Max. No. of Tandem Breakers
Category
Square D QO - Main Lug Load Centers
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Technical Specifications

SQUARE D
Manufacturer Part Number
QO312L125GRB
Type
65kA, Outdoor
AC
208Y/120/240V
Phase
3
Spaces
12
Voltage
208Y/120/240V AC
Location
Outdoor
Included Enclosure Cover
Surface Cover
Max. No. Of Tandem Breakers
0
Short Circuit Current Rating
65kA
Main Circuit Breaker or Main Lug
Main Lug
View Full Spec Sheet

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SQUARE D Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Square D QO Main Lug Load Center (MPN QO312L125GRB) is a 125 A, 3-phase unit rated for 208Y/120/240V AC with a 65kA short circuit current rating. It offers 12 spaces, zero tandem breaker capacity, and includes a surface cover for outdoor installation.

Frequently Asked Questions

What is the Square D QO312L125GRB load center used for?

The Square D QO312L125GRB is a 125 A, 3-phase main lug load center for outdoor use. It distributes power in commercial or industrial settings at 208Y/120/240V AC with a 65kA short circuit rating, supporting up to 12 circuits without tandem breakers.

What are the specifications of the Square D QO312L125GRB?

This Square D QO load center is rated 125 A, 208Y/120/240V AC, 3-phase, with a 65kA short circuit current rating. It has 12 spaces, zero tandem breaker capacity, and includes a surface cover for outdoor installation. The main lug design requires a separate main breaker upstream.

Where to buy the Square D QO312L125GRB load center worldwide?

3G Electric supplies the Square D QO312L125GRB load center to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 125 A, 3-phase outdoor unit.

How to install a Square D QO main lug load center outdoors?

Mount the Square D QO312L125GRB on a flat vertical surface using the provided enclosure. Connect incoming 3-phase 208Y/120/240V AC power to the main lugs, ensuring the upstream breaker is off. Use only Square D QO breakers rated for 65kA. Follow local electrical codes for outdoor installations.

Used in

Common applications for SQUARE D
Commercial building electrical panels — Square D QO series plug-in circuit breakers for branch circuit protection
Industrial motor control centers — Square D QOB series bolt-on breakers in NQOD panelboards
Heating equipment installations — Square D QOU series unit-mount breakers for overcurrent protection
Outdoor electrical distribution — Square D L-Frame enclosures housing LAL/LHL breakers for 400 A service
Indoor facility power distribution — Square D Q-Frame enclosures with QBL/QDL breakers for 225 A circuits
Retrofit and replacement in existing Square D load centers — QO series breakers for 120/240V AC systems

SQUARE D Products

3G Electric supplies SQUARE D square d qo - main lug load centers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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