Burndy YA4C Copper Compression Lug, 1-Hole, 4 AWG, 1/4" Stud
The Burndy YA4C is a one-hole, long-barrel compression lug for 4 AWG copper conductors, with a 1/4" stud size and an internal chamfer for smooth wire entry. Made of tin-plated copper, it is rated up to 35kV at 90°C and is UL Listed and CSA Approved to UL468A-468B. The gray color code and 8 or 346 die index simplify crimp tool selection.
Key Features
- Stud Size: 1/4" stud with a single mounting hole for 4 AWG copper conductors.
- Long Barrel Design: internal chamfer eases conductor insertion and improves compression contact.
- Durable Construction: solid copper body with electro tin plating for corrosion resistance.
- Compression Termination: crimp connection sized to an 8 or 346 die index.
- High Voltage Rating: rated up to 35kV at 90°C for demanding feeder applications.
- UL/CSA Listed: meets UL468A-468B for code conductor terminations.
Certifications & Compliance
- UL Listed
- CSA Approved
- Meets UL468A-468B Industry Standards
Technical Specifications
- Mounting Holes: 1
- Product Material: Copper
- Plating Type: Tin - Electro Plated
- Termination Method: Compression
- Insulated: Yes
- Dimension - Strip Length inch: 1-3/16
- Dimension - Stud Size inch: 1/4
- Dimension - Hole Size inch: 0.27
- Dimension - Length Overall inch: 1.87 in
- Dimension - Outside Diameter inch: 0.34 in
- Voltage - Maximum: 35000
- Rating - KVA: 35 kV
- UL Listed: Yes
- Certification - CSA Approved: Yes
- Industry Standard(s): UL468A-468B
- Feature - Barrel Style: Chamfered
- Trade Name: HYLUG™
- UPC: 781810501351
Typical Applications
- Code Conductor Termination and Grounding
- Commercial and Industrial Electrical Connections
- High-Voltage Feeder and Distribution Wiring up to 35kV
- Panelboard and Switchgear Lug Connections
- Copper Conductor Compression Terminations
Why Burndy?
Burndy's YA4C HYLUG™ lug is machined from solid copper with electro tin plating for long-term corrosion resistance, backed by UL Listing and CSA Approval to UL468A-468B. The chamfered long-barrel design and precise 8 or 346 die index deliver a consistent, code-compliant compression connection.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- BURNDY-20260915
- Wire Size:
- 4 AWG
- Mounting Holes:
- 1
- Plating:
- Electro Tin Plated
- Termination Method:
- Compression
- Insulated:
- Yes
- Standards - RoHS Compliance Status:
- CM
- Dimension - Strip Length inch:
- 1-3/16
- Dimension - D inch:
- 0.50 in
- Color Code:
- Gray
- Voltage - Maximum:
- 35000
- Feature - Barrel Type:
- Long
- Plated:
- Y
- Connector Type:
- LONG BARREL
- Dimension - L Length Overall mm:
- 47 mm
- Certification - CSA Approved:
- Yes
- UL Listed:
- Yes
- Dimension - Stud Size inch:
- 1/4
- Sub Brand:
- HYLUG
- Dimension - Hole Size inch:
- 0.27
- Dimension - B Length fraction:
- 1-1/8 in
- Conductor - Copper Str Navy Size Range:
- 40 (19) Navy
- UPC:
- 781810501351
- Conductor - Copper Str Navy Size:
- 40 (19) Navy
- Plating Type:
- Tin - Electro Plated
- Dimension - B Length inch:
- 1.12 in
- Certification - ETL:
- No
- Certification - cULus:
- No
- UPC 12 Digit:
- 7818105013511
- Dimension - Hole Size mm:
- 7 mm
- Physical Attribute - Tongue Type:
- Standard
- Minimum Pack Quantity:
- 1
- Dimension - Length Overall inch:
- 1.87 in
- Trade Name:
- HYLUG™
- Dimension - Bolt Hole Size inch:
- 0.27 in
- Industry Standard(s):
- UL468A-468B
- Feature - Barrel Style:
- Chamfered
- Conductor Material:
- Copper
- Product Type:
- Compression Lug
- Dimension - N inch:
- 0.25 in
- Certification - UL Recognized:
- No
- Conductor - Copper Str Size Range:
- 4 AWG
- Physical Attribute - Tongue Angle:
- Straight
- Dimension - Z inch:
- 0.25 in
- Standards - Industry Standards Met:
- UL468A-468B
- Dimension - Outside Diameter inch:
- 0.34 in
- Rating - KVA:
- 35 kV
- Product Material:
- Copper
- Product Size:
- 1/4"
- Department:
- Electrical
- Product Group:
- Wire Connectors & Terminals
- Product Subgroup:
- Lugs & Terminals
- Physical Attribute - Number of Holes:
- 1
- Temperature Rating:
- 194
- Die Index:
- 8;346
- Dimension - Pad Width inch:
- 0.50 in
- Rating - Minimum Voltage:
- 600
- Conductor - Copper Str Size:
- 4 AWG
- Application:
- For Code Conductor
Burndy YA4C – Frequently Asked Questions
1) Will the Burndy YA4C lug work on 4 AWG copper wire only, or can I use it on aluminum?
The YA4C HYLUG is a copper-only lug sized for 4 AWG stranded copper conductors. The barrel is copper with electro tin plating, and the conductor material is listed as copper. Do not use it on aluminum conductors; aluminum terminations need an aluminum or dual-rated AL9CU lug.
2) What crimp die do I need for a Burndy YA4C lug?
Crimp it with the 8 or 346 die index, and the gray color code on the barrel confirms you have the right die set. It is a compression termination, so a hand or hydraulic crimper carrying those Burndy die numbers is required; a mechanical set screw connection is not an option on this lug.
3) How much insulation do I strip back for the Burndy YA4C?
Strip 1-3/16 inches of insulation. That matches the long barrel depth so the conductor bottoms out fully before you crimp. The chamfered barrel mouth helps guide the strands in without birdcaging.
4) Is this lug rated for medium voltage feeders, or only 600V branch circuits?
Rated up to 35 kV (35,000 volts) at 90 degrees C, so the YA4C works on medium voltage feeder and distribution terminations as well as ordinary 600V panel and switchgear work. It is UL Listed and CSA Approved to UL468A-468B for code conductor terminations.
5) Is a long barrel compression lug better than a short barrel or a set screw lug for this job?
Long barrel is the choice when you want more crimp surface on the conductor, which is what the YA4C gives you along with a 1.12 inch barrel and a chamfered entry. Compared with a mechanical set screw lug, a compression crimp is permanent and needs no re-torquing over time, but you must own the matching die. A set screw lug is the practical pick for field changes or where no crimper is available; a short barrel suits shallow enclosures where a 1.87 inch overall length will not fit.
6) Can I use the YA4C for a grounding electrode or equipment ground connection?
Yes. The lug is listed for code conductor termination and grounding on 4 AWG copper, with UL Listing and CSA Approval to UL468A-468B. The tin plating over copper resists corrosion where the connection sits in a damp vault or outdoor enclosure.
7) Does the YA4C fit Navy stranded copper cable?
It covers 40 (19) Navy stranded copper in addition to standard 4 AWG copper, which matters for shipboard and government spec work where Navy cable sizing is called out instead of AWG.
8) What is the exact part number and do I have to buy a box of these?
The manufacturer part number is YA4C, part of the Burndy HYLUG line. Minimum pack quantity is 1, so you can order a single piece rather than a full carton.
How fast can I get the Burndy YA4C delivered?
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Does the Burndy YA4C come with a warranty?
Absolutely. The Burndy YA4C is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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