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Burndy Universal Aluminum Terminal Lug with Tin Plating
The Burndy Universal Terminal Lug is a professional-grade aluminum terminal lug engineered for dependable electrical connections. Available in multiple configurations and conductor ranges, it features a tin-plated finish for enhanced corrosion resistance and long-term contact reliability. Rated for both aluminum and copper (Al/Cu) conductors and UL Listed to UL468A-468B standards, it delivers the dependable performance electrical contractors and utility professionals rely on for critical terminations.
Key Features
- Versatile Connections: Available across a range of conductor sizes for flexible electrical connections.
- Secure Mounting: Engineered mounting configuration provides a secure mechanical connection and installation flexibility.
- Aluminum Construction: Lightweight aluminum body delivers excellent conductivity-to-weight performance and corrosion resistance.
- Tin-Plated Finish: Enhances corrosion protection and improves long-term electrical contact reliability.
- Al/Cu Rated: Universal design is compatible with both aluminum and copper conductors for maximum application versatility.
- Specified Installation Torque: Defined torque ratings ensure a proper, secure connection without over-tightening.
Certifications & Compliance
- UL Listed
- CSA Certified
- Meets UL468A-468B Industry Standards
- Al/Cu Rated
Technical Specifications
- Csa Certified: Y
- Culus: N
- Ul Listed: Y
- Ul Recognized: N
- Rated For Direct Burial: N
- Product Type: Cable Lug
- Product Group: Wire Connectors
Typical Applications
- Electrical Panel and Sub-Panel Connections
- Motor Control Centers and Industrial Control Cabinets
- Transformer Primary and Secondary Terminations
- Switchgear and Power Distribution Equipment
- Utility Overhead and Underground Connections
- Equipment Grounding Systems
Why Burndy?
Burndy's Universal Terminal Lug combines aluminum construction with a tin-plated finish to deliver reliable, corrosion-resistant electrical connections backed by UL Listing to UL468A-468B and CSA Certification. Its Al/Cu rated design gives electricians and contractors a dependable, code-compliant terminal for demanding professional electrical connections.
Variant Specifications
| Wire Size | Model | SKU |
|---|---|---|
| K3A25–K4A36 range (multi wire-size) | Standard | K3A26U-2N |
| K3A27U2N wire size | K3A27U2N | K3A27U2N |
Manufacturer Resources
Product Specs
- Industry Standard(s):
- UL468A-468B
- Connector Type:
- Terminal
- Department:
- Electrical
- Product Type:
- Mechanical Lug
- Product Group:
- Wire Connectors & Terminals
- Product Subgroup:
- Lugs & Terminals
- Product Material:
- Aluminum
- list_batch:
- BUR-20260917
- UL Listed:
- Y
Burndy K3A2U-2 – Frequently Asked Questions
1) Can Burndy K-Series terminal lugs be used on aluminum conductors, or copper only?
Both. The Burndy K-Series universal terminal lug is dual rated AL/CU, so the same lug terminates either aluminum or copper conductors. The body is aluminum with a tin plating for corrosion resistance and stable long-term contact, which is what makes the dual rating possible.
2) What wire sizes do the Burndy K-Series universal lugs cover?
The range runs from #14 AWG up to 600 kcmil depending on which lug you pick. Small sizes: K3A25U-2 takes #14-1/0 AWG, K3A2U-2 takes #14-2 AWG, K3A26U-2N takes #14-2/0 AWG. Mid range: K3A27U2N at #6-3/0 AWG and K3A29U-2N at #6 AWG-250 kcmil. Large: K3A31U2N and K3A31U4N at #6 AWG-350 kcmil, and K3A36U-2N and K3A36U4N at #2 AWG-600 kcmil.
3) When should I use a 4-hole terminal lug instead of a 2-hole?
Four-hole pads resist rotation and vibration loosening better and spread clamping force over a larger contact area, which is why switchgear and motor control specs often call for them on larger feeders. In the K-Series the 4-hole option appears only at the top two wire ranges: K3A31U4N for #6 AWG-350 kcmil and K3A36U4N for #2 AWG-600 kcmil. Every other size in the family is a 2-hole pad. If the equipment pad is drilled for two holes, a 4-hole lug will not land correctly, so match the drilling.
4) Can I bury a Burndy K-Series terminal lug in a direct-burial splice or handhole?
No. The K-Series lug is not rated for direct burial. Keep it inside enclosures, panels, cabinets, and switchgear. For a buried or submerged connection you need a connector specifically listed for direct burial.
5) Is this a mechanical set-screw lug or a compression lug?
The K-Series is a mechanical terminal lug: the conductor is clamped by set screws and torqued to a specified value, so no crimp tool or die set is needed. Torque values are defined for each size, and hitting them matters on aluminum in particular, since under-torque causes heating and over-torque damages the conductor.
6) Will a single Burndy K-Series lug standardize both the copper and aluminum feeders in my facility?
For MRO stocking, the AL/CU rating is the point: one part number covers either conductor metal, so a facility running copper branch feeders and aluminum service conductors can stock by wire range and stud size instead of by conductor metal. Tin plating on the aluminum body is what keeps the copper contact stable. You still need separate part numbers per wire range and per stud size.
7) Can I use a Burndy K-Series lug for an equipment ground connection?
Yes, equipment grounding systems are among its applications, along with panel and sub-panel connections, motor control centers, transformer primary and secondary terminations, switchgear, and utility overhead and underground terminations. Underground here means terminations in enclosures, not a buried connection, since the lug is not direct-burial rated.
How fast can I get the Burndy K3A2U-2 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 K3A2U-2 come with a warranty?
Absolutely. The Burndy K3A2U-2 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 K3A2U-2?
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