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Burndy Aluminum Compression Lug, 2-Hole, Short Barrel, Tin-Plated
Model: BUR-YA-26A3
Burndy Aluminum Compression Lug, 2-Hole, Short Barrel, Tin-PlatedThe Burndy Aluminum Compression Lug is a professional-grade HYLUG-style terminal built for high-voltage power distribution and...
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$10.39
Burndy KKA31U2N Aluminum Universal 2-Hole Mechanical Lug, Al/Cu Rated
The Burndy KKA31U2N is an aluminum universal terminal lug engineered for reliable mechanical connections in commercial and industrial power distribution. This 2-hole terminal accepts 6 AWG (Str) through 350 kcmil conductors, features a 1/2" stud bolt hole with 1.75" stud hole spacing, and is Al/Cu rated for use with both aluminum and copper conductors. Tin plated for corrosion resistance and secured with 2 screws, this lug is built to UL468A-468B industry standards for dependable, code-compliant terminations.
Key Features
- Conductor Range: Accepts 6 AWG (Str) to 350 kcmil aluminum and copper stranded conductors for versatile application coverage.
- Durable Construction: Aluminum body construction rated Al/Cu for compatibility with both aluminum and copper wiring.
- 2-Hole Terminal Configuration: Two mounting holes with a 1/2" stud size and 1.75" stud hole spacing for secure, stable connections.
- Hardware Included: Supplied with 2 screws for a complete mechanical connection assembly.
- Installation Torque: Rated to 275 in-lbs installation torque for proper, consistent tightening.
- Finish: Tin plated finish helps resist corrosion and supports long-term connection integrity.
- Dimensions: Measures 5.50" in length and 1.25" in width, with a 0.38" thickness and 1.27" pad width.
Certifications & Compliance
- UL Listed
- CSA Certified
- Meets UL468A-468B Industry Standards
Technical Specifications
- UL Recognized: N
- CSA Certified: Y
- CULUS: N
- Bolt Hole Size: 1/2"
- Installation Torque: 275 in-lbs
- Type of Plating: Tin
- Number of Holes: 2
- Plated (Yes or No): Y
- UL Listed: Y
- Rated for Direct Burial: N
Typical Applications
- Commercial and Industrial Electrical Installations
- Panelboard and Switchgear Terminations
- Aluminum and Copper Conductor Splicing
- Power Distribution and Grounding Connections
- Renovation and New Construction Wiring Projects
Why Burndy?
Burndy connectors and terminals are built to meet UL468A-468B industry standards, delivering the mechanical strength and Al/Cu conductor compatibility that professional electricians depend on. With tin-plated corrosion resistance and CSA certification, the KKA31U2N terminal lug is engineered for dependable, code-compliant performance in demanding electrical environments.
Manufacturer Resources
Product Specs
- Ul Recognized:
- N
- Bolt Hole Size (in):
- 0.50
- Width (in):
- 1.25
- CSA Certified:
- Y
- Thickness:
- 0.38
- CULUS:
- N
- Bolt Hole Size:
- 1/2
- Installation Torque:
- 275
- Type of Plating:
- Tin
- N (in):
- 0.63
- Number Of Holes:
- 2
- Pad Width (in):
- 1.27
- Length (in):
- 5.50
- Aluminum Size (Range):
- 6 AWG-350 kcmil
- Connector Type:
- Terminal
- Plated (Yes or No):
- Y
- UL Listed:
- Y
- Industry Standard(s):
- UL468A-468B
- Copper Stranded (Range):
- 6 AWG-350 kcmil
- D - in:
- 3.16
- ROHS Compatible:
- Non-Compliant
- E - in:
- 1.75
- Rated for Direct Burial:
- N
- Department:
- Electrical
- Product Group:
- Wire Connectors & Terminals
- Product Type:
- Mechanical Lug
- Product Subgroup:
- Lugs & Terminals
- Product Material:
- Aluminum
Burndy KKA31U2N – Frequently Asked Questions
1) What wire sizes does the Burndy KKA31U2N lug accept?
The KKA31U2N takes 6 AWG stranded through 350 kcmil, and the same range applies to both aluminum and copper stranded conductors since the lug is Al/Cu rated. One lug covers a feeder run and its smaller taps, so you can standardize on a single part instead of stocking several sizes.
2) Will this 2-hole lug bolt to a 1/2 inch stud pad with 1-3/4 inch hole spacing?
Yes. The KKA31U2N has two holes sized for 1/2 inch bolts on 1.75 inch centers, which is the common NEMA two-hole pad spacing for that bolt size. Pad width is 1.27 inches and the tongue is 0.38 inch thick, so check that your bus or ground bar pad is at least that wide and that the bolt length accounts for the tongue thickness.
3) Can I land copper conductors in this aluminum body lug?
Yes, it is Al/Cu rated, so copper and aluminum stranded conductors in the 6 AWG to 350 kcmil range are both acceptable. The aluminum body is tin plated, which is what makes the copper connection acceptable and adds corrosion resistance in damp switchgear and outdoor enclosures.
4) What torque do I tighten the KKA31U2N set screws to?
275 in-lbs on the setscrews. There are two screws supplied with the lug, and both need to hit that value; under-torquing an aluminum mechanical lug is the usual cause of a hot connection on an inspection thermal scan.
5) Can this lug be buried in the ground or used in a direct burial ground rod connection?
No. The KKA31U2N is not rated for direct burial, so keep it inside an enclosure, handhole, or above grade. For a buried grounding electrode connection use a direct burial rated or exothermic connection instead.
6) Is the Burndy KKA31U2N UL Listed and CSA certified for a panelboard termination?
It is UL Listed and CSA Certified, and it is built to UL468A-468B, the standard covering wire connectors. That is the documentation an inspector or an institutional spec typically asks for on a service or panelboard termination.
7) How much room do I need in the enclosure for this lug?
Overall the lug measures 5.50 inches long by 1.25 inches wide, with a 0.38 inch tongue thickness and a 1.27 inch pad width. In a tight gutter or a shallow ground bar compartment, that 5.50 inch length plus bending radius for a 350 kcmil conductor is the dimension that usually decides whether it fits.
8) Mechanical lug or compression lug for a 350 kcmil feeder?
The KKA31U2N is mechanical: two setscrews clamp the conductor at 275 in-lbs, so it installs with a torque wrench and no crimp tool or die set. That makes it the practical choice for service work, retrofits, and one-off terminations where hauling a hydraulic crimper is not worth it. A compression lug is the better call for high-vibration or high-volume production work where a repeatable crimp is specified.
9) Does the KKA31U2N come with the mounting bolts?
It ships with the two setscrews that clamp the conductor. The 1/2 inch bolts, nuts, and washers used to fasten the pad to your bus or ground bar are separate, so add that hardware to the order, sized for the 0.38 inch tongue thickness plus your pad.
How fast can I get the Burndy KKA31U2N delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Burndy KKA31U2N come with a warranty?
Absolutely. The Burndy KKA31U2N is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Burndy KKA31U2N?
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installation tips, and troubleshooting. Contact Us
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