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Description
QO3125SL - Square D 125A 3 Pole 240VAC Circuit Breaker Sub Feed Lug KitDescription QO3125SL QO3125SL is a 125 Amp, 3 pole circuit breaker sub feed lug kit by Square D designed for reliable power distribution in three phase systems. This Square D QO3125SL sub feed lug kit supports up to 125 Amps with a 240 VAC voltage rating and a 10kA interrupting rating. It is plug in mountable and compatible with wire sizes from AWG 12 to AWG 2 0 copper or aluminum. The product is engineered for use with QO Load Centers and NQOD
Description
QO3125SL
QO3125SL is a 125 Amp, 3 pole circuit breaker sub feed lug kit by Square D designed for reliable power distribution in three-phase systems.This Square D QO3125SL sub feed lug kit supports up to 125 Amps with a 240 VAC voltage rating and a 10kA interrupting rating. It is plug-in mountable and compatible with wire sizes from AWG 12 to AWG 2/0 copper or aluminum. The product is engineered for use with QO Load Centers and NQOD merchandised panelboards.
- Key Specifications
- Amperage: 125A
- Voltage: 240 VAC
- Poles: 3
- Mounting Type: Plug-in
- Interrupt Rating: 10kA @ 240 VAC
- Wire Size Range: AWG 12 to AWG 2/0 (Copper/Aluminum)
- Series/Frame: QO
- Compatible with QO Load Centers and NQOD Panelboards
- Certifications: CSA, cULus, Prop 65, REACH, RoHS
Specifications
- Part Number: QO3125SL
- Manufacturer : Square D
- Category : Circuit Breaker
- Item Subcategory : Molded Case
- Family : QO Series
- Type : QO
- Voltage : 240 AC
- Amperage : 100
- Phase : 3
- Poles : 3
- AIC rating : 10kA@240V
- Connection : Plug-In
- Functions : Long Time and Instantaneous Trip
- Protection : Thermal Magnetic
Product Data
- UPC : 785901031338
- GTIN : 00785901031338
- Country of Origin : Mexico
- Dimensions : 2.241 in x 3.500 in
- Weight : 1
- Certification : CSA;cURus
- Wire Size : AWG 12 to AWG 2/0, Cu/Al
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 557 reviews
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Product Reviews
★★★★★ 5
Used for my rv battery bank
Size: 4/0AWG, Color: 3ft Black + 3ft Red
Good quality used these for my battery bank on my rv solar setup.
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Reviewed in the United States on December 1, 2025
★★★★★ 5
Top Shelf
Size: 4/0AWG, Color: 3ft Black + 3ft Red
QUALITY !
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Reviewed in the United States on November 4, 2025
★★★★★ 5
Direct Connection
Color: Black, Size: 25-Feet
Received the package in good condition. This wire is a decent quality. I made a set of jumper cables with it and they work excellent.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
bought twice to make custom UPS setup battery leads, not disappointed
Color: Black, Size: 25-Feet
bought this item(25ft 2awg) twice, the first time I did was to create some quick connect cables between my batteries and my distribution block to my 4kw invertor(24v 165a peak calculated load)
I may have oversized due to knowing that the bigger you go the less you stress components and loose power to voltage drop
these cables are a nice high-grade rubber jacket and the 30awg strands are ideal for maximum flexibility while remaining fairly easy to terminate
this cable also includes a backer paper wrap that allows for easy stripping(of the rubber) without too much strand loss damage(from cutting too close to the core)
overall, would buy again, like I did, if I need larger runs(say for feeding an RV solar AC distribution panel) I would buy this brand again, in the 100ft range or so
THHN is not ideal for flex connections(strands are way too stiff) but a couple runs of welding cable like this inside something like "smurf tube" would be a perfect high-power temporary connection system, or just a way to isolate a large battery stack used for a solar setup
in fact I may do that someday, set up a pallet of LiFePO4 batteries with a large quick connect, and just recharge the massive array(s) at a secondary location where solar is more ideal(or other renewables)
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Reviewed in the United States on February 5, 2024
★★★★★ 5
Custom wires for winch solenoid pack relocation.
Color: Black, Size: 25-Feet
Wire is nice. Flexible. Seems good. However the inner liner is not moisture blocking as I assumed from the pictures, it's paper.. still seems like a good price per foot.
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Reviewed in the United States on February 14, 2020