QO312L125G Square D Load Center QO Series - Essential Electric Supply
QO312L125G - Square D QO 125A 240V 3-Phase Main Lug Load Center NEMA 1 Indoor 12-Space - Essential Electric Supply
Hover to zoom
QO312L125G Square D Load Center QO Series - Essential Electric Supply
QO312L125G - Square D QO 125A 240V 3-Phase Main Lug Load Center NEMA 1 Indoor 12-Space - Essential Electric Supply

Reference images. Contact us for photos of the available unit.


Schneider Electric

QO312L125G

Square D QO 125A 240V 3-Phase Main Lug Load Center NEMA 1 Indoor 12-Space

Current: 125Voltage: 120/240 AC
Choose your condition
Compare New & Re-Certified

New
Original equipment manufacturer (OEM) products that have never been energized. New items may come in their original factory packaging or may be unused components removed from new panels. Packaging and cosmetic appearance can vary; contact our team for details or photos of the available unit.

Re-Certified
Original equipment manufacturer (OEM) products that have previously been energized and have been inspected, tested, and recertified for return to service. These items may show signs of prior use. Contact our team for details about the unit’s condition, testing documentation, and applicable warranty.

Ask about this part →
$205.96 $332.00
Save $126.04
24 In stock, ready to be shipped
View warranty coverage Return eligibility

Need it urgently? Call to confirm shipping options

Buying for a project? Request a quote

Same-Day Shipping

Most items ship same-day if ordered by 12:30 PM PST.

Product Description & Specifications

Confirm the complete catalog number and application requirements before ordering. The specifications below reflect the product information available for this listing.

Manufacturer
Schneider Electric
Brand
Square D
Sub-Category
Load Center
Series
QO Series
Frame
QO
Rated current
125
Voltage
120/240 AC
Phases
3
Interrupting rating
65kA
Wires
4
NEMA rating
1
Country of origin
United States
Temp Rating
-13°F to 158°F (-25°C to 70°C)
Bus Type
Copper
Show all specifications (6 more)
UPC
785901295037
GTIN
00785901295037
Dimensions
14.25 in x 17.91 in
Weight
11.05
Certification
RoHS Compliant, UL Listed
Wire Size
AWG 6 to AWG 2/0, Aluminum/Copper
Product description & additional details

QO312L125G


QO312L125G is a Square D QO series 3-phase main lug load center rated for 125A and 240V, designed for indoor use with NEMA 1 protection. This load center features a tin-plated copper busbar, 12 spaces for circuit breakers, and is suitable for both residential and commercial applications. It supports 3-wire and 4-wire configurations and includes a grounding bar. The cover must be ordered separately.
  • Part Number: QO312L125G
  • Manufacturer: Square D
  • Series: QO
  • Amperage: 125A
  • Voltage: 208Y/120V, 240/120V Delta, 240V Delta
  • Phase: 3-Phase
  • Mounting Type: Indoor, NEMA 1
  • Interrupt Rating: 65kA
  • Spaces: 12
  • Bus Material: Tin Plated Copper
  • Wire Size: #6 to 2/0 AWG (Al/Cu)
  • Certifications: UL Listed
At Essential Parts, we offer fast shipping, lowest price, and expert support to help you get the right product every time.

Specifications

  • Part Number: QO312L125G
  • Manufacturer : Schneider Electric
  • Brand : Square D
  • Category : Circuit Breaker
  • Item Subcategory : Load Center
  • Family : QO Series
  • Type : QO
  • Voltage : 120/240 AC
  • Amperage : 125
  • Phase : 3
  • AIC rating : 65kA
  • Temp Rating : -13°F to 158°F (-25°C to 70°C)
  • Wire : 4
  • Nema Rating : 1
  • Bus Type : Copper

Product Data

  • UPC : 785901295037
  • GTIN : 00785901295037
  • Country of Origin : United States
  • Dimensions : 14.25 in x 17.91 in
  • Weight : 11.05
  • Certification : RoHS Compliant, UL Listed
  • Wire Size : AWG 6 to AWG 2/0, Aluminum/Copper

Technical Documents
Product Datasheet
Return eligibility: what to know before ordering

Return requests must be made within 30 days of shipping and require authorization. Used, installed, energized, or tested items are not eligible. A restocking fee of up to 35% may apply. Review the full policy before purchase.

Product-specific restrictions apply. International orders are non-cancellable and non-refundable under the policy.

Read the complete return and warranty policy ↗

Warranty supplied by Essential Electric

Warranty coverage is provided by Essential Electric, subject to the product and policy terms. Essential Electric is an independent supplier. Surplus or discontinued inventory may not qualify for the original manufacturer’s warranty.

Review coverage, exclusions, and the claim process ↗

Hear from other buyers.

What customers say about ordering from Essential Electric.

Reviews for this product

You may also like

Save $37.70
default product icon QOC16US - Square D Circuit Breaker Load Center - Essential Electric Supply
QOC16US - Square D QO Series 125A 120/240V 16-Space Surface Mount Load Center Cover, UL Listed, CSA Rated, Type 1, Class 2
From $0.00 $37.70
In stock
Choose options
Essential Electric Default Product Image
A1515 - Challenger 15A 2-Pole 120V Plug-In Molded Case Circuit Breaker
From $12.13
In stock
Choose options
Save $17.95
default product icon QOC24UF - Square D 125A 240V 1-Phase 24-Space Load Center Cover Flush Mount
QOC24UF - Square D 125A 240V 1-Phase 24-Space Load Center Cover Flush Mount
$19.75 $37.70
In stock
Save $18.62
default product icon QOC20U100S - Square D 100A 240V 1-Phase 3-Wire QO Series Load Center Cover Surface Mount NEMA 1
QOC20U100S - Square D 100A 240V 1-Phase 3-Wire QO Series Load Center Cover Surface Mount NEMA 1
$19.08 $37.70
In stock
Save $410.22
default product icon BR290 - Cutler Hammer 90 Amp 2-Pole 120/240V Type BR Plug-On Circuit Breaker, 10 kAIC, Common Trip, UL 489
BR290 - Cutler Hammer 90 Amp 2-Pole 120/240V Type BR Plug-On Circuit Breaker, 10 kAIC, Common Trip, UL 489
$45.02 $455.24
In stock
Save $27.01
default product icon QOC30UF - Square D Circuit Breaker Load Center - Essential Electric Supply
QOC30UF - Square D 200A 240V 30-Space Flush-Mount Load Center Cover NEMA 1 UL CSA
$59.99 $87.00
In stock
Save $113.00
default product icon MH38 - Square D 225A 240V 1-Pole NEMA 1 Panelboard Enclosure Load Center - Essential Electric Supply
MH38 - Square D 225A 240V 1-Pole NEMA 1 Panelboard Enclosure Load Center
From $0.00 $113.00
In stock
Choose options
default product icon ECLTB1 - Siemens 125A Line Terminal Barrier for EQ Main Breakers Circuit Breaker Accessory
ECLTB1 - Siemens 125A Line Terminal Barrier for EQ Main Breakers Circuit Breaker Accessory
$5.65
In stock
default product icon
QO320L125GRB - Square D 125A 208Y/120V 3-Phase 20-Space Load Center NEMA 3R
$724.71
In stock
Save $45.15
default product icon QO612L100DF - Square D Circuit Breaker Load Center - Essential Electric Supply
QO612L100DF - Square D 100A 120/240V 1-Phase 6-Space 12-Circuit NEMA 1 Fixed Main Lug Load Center
From $44.85 $90.00
In stock
Choose options