Color-Keyed One-Hole Copper Ca...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.30
Color Keyed One-Hole Lugs #4AWG - Standard Barrel (600V to 35KV) - Grey

Color-Keyed One-Hole Copper Cable Lug #4AWG Standard Barrel 600V-35KV Grey

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Model: 54140

In Stock (leaves warehouse same day if ordered before 3pm ET)

$4.30
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Color-Keyed One-Hole Copper Cable Lug #4AWG Standard Barrel 600V-35KV Grey

Professional electrical connection solution for high-voltage applications

The Color-Keyed one-hole copper cable lug delivers reliable electrical connections for #4AWG conductors in applications from 600V to 35KV. Featuring a standard barrel design with tinned copper construction and grey color coding, this professional-grade lug ensures secure connections with single-hole mounting configuration and sight hole verification capability.

Professional Features & Benefits

  • #4AWG Wire Capacity: Precisely engineered for #4AWG conductors ensuring optimal contact and current carrying capacity
  • 600V to 35KV Rating: Wide voltage range capability supports diverse electrical applications from low to high voltage systems
  • Tinned Copper Construction: Superior corrosion resistance and enhanced conductivity for long-term reliability
  • Standard Barrel Design: Proven crimping configuration provides consistent, secure mechanical and electrical connections
  • Color-Coded Grey: Visual identification system improves installation accuracy and system organization
  • UL E9809 Listed: Meets rigorous safety and performance standards for professional electrical installations
  • Sight Hole Feature: Visual verification of proper conductor insertion ensures installation quality

Technical Specifications

  • Brand Label: Color Keyed / Blackburn
  • Brand Name: Color-Keyed
  • Connecting Angle: Straight
  • Country Of Origin: Mexico (MX)
  • Department: Electrical
  • Effective Date: 19711008
  • Etim: EC001051 Tube cable lug for copper conductors
  • Idea Granular Category Code Igcc: 4532 >> Cable or wire lug
  • Igcc: 4532 Cable or wire lug
  • Inner Dimensions Inches: 3.3x2.8x2.3
  • Inner Quantity: 50
  • Insulated: N
  • Insulation: None
  • Insulation Material: None
  • Number Of Fixing Holes: 1
  • Number Of Holes: 1
  • Outer Dimensions Inches: 12.75x6.25x4
  • Outer Quantity: 500
  • Product Color: Gray
  • Product Details: Standard Barrel
  • Product Material: Copper
  • Product Type: Standard Barrel
  • Slender Flange Model: N
  • Standard: UL E9809
  • Standards: UL E9809
  • Sub Brand Label: Color Keyed
  • Surface Protection: Tinned
  • Unspsc: 39121405 Cable or wire lug
  • Weight Uom: 1.75 lbs. per 100
  • With Sight Hole: Y

Professional Applications

  • Industrial Power Distribution Systems
  • Commercial Electrical Installations
  • Utility Infrastructure Projects
  • High-Voltage Equipment Connections
  • Substation and Switchgear Applications
  • Generator and Transfer Switch Connections
  • Motor Control Centers

Why Choose Color-Keyed Quality?

Color-Keyed cable lugs deliver proven reliability with UL E9809 listing and tinned copper construction for superior corrosion resistance. The sight hole verification feature and color-coding system ensure professional installation quality and long-term performance in demanding electrical applications.

Manufacturer Resources

Spec Sheet

Product Specs

Brand Label:
Color Keyed / Blackburn
Brand Name:
Color-Keyed
Connecting Angle:
Straight
Department:
Electrical
Effective Date:
19711008
Etim:
EC001051 Tube cable lug for copper conductors
Idea Granular Category Code Igcc:
4532 >> Cable or wire lug
Igcc:
4532 Cable or wire lug
Inner Dimensions Inches:
3.3x2.8x2.3
Inner Quantity:
50
Insulated:
N
Number Of Fixing Holes:
1
Number Of Holes:
1
Outer Dimensions Inches:
12.75x6.25x4
Outer Quantity:
500
Product Color:
Grey
Product Details:
Standard Barrel
Product Material:
Copper
Product Type:
Standard Barrel
Slender Flange Model:
N
Standards:
UL E9809
Sub Brand Label:
Color Keyed
Surface Protection:
Tinned
Unspsc:
39121405 Cable or wire lug
Weight Uom:
1.75 lbs. per 100
With Sight Hole:
Y

Color-Keyed 54140 – Frequently Asked Questions

1) Will this Color-Keyed one-hole lug take #4 AWG copper wire?
The Color-Keyed grey one-hole lug is sized for #4 AWG copper conductors only. It's a compression (crimp) tube lug for copper, not a mechanical set-screw lug, so the barrel is matched to one conductor size. Running a different AWG through it gives you a loose or over-stuffed crimp. For aluminum conductors you need an aluminum-bodied or dual-rated lug instead.
2) Can I use this lug on 15kV or 25kV cable terminations?
Yes. The grey Color-Keyed standard barrel lug is rated 600V through 35KV, which covers 5kV, 15kV, 25kV and 35kV class shielded cable terminations as well as low-voltage work. It carries a UL listing under file E9809.
3) Can I use a one-hole lug where the drawing calls for two-hole NEMA pad spacing?
No. This is a single fixing hole lug. If the spec or the equipment pad calls for two-hole mounting, typically for anti-rotation on bus connections, you need a two-hole tongue version instead. One-hole lugs are for single-stud terminals, breaker pads and ground bars.
4) Is this cable lug insulated, or do I need to cover it after crimping?
It's a bare lug, no insulation of any kind on the barrel or tongue. On anything above 600V, and in most switchgear and MCC work, you finish the termination yourself with heat shrink, tape or a boot. Plan that material into the job.
5) How do I verify the conductor is fully seated in this lug before crimping?
The barrel has a sight hole. Push the stripped #4 conductor in until you can see copper through the hole, then crimp. That's the inspection point an electrical inspector or QA walk will look for on a compression termination.
6) Why is this lug grey, and does the color mean anything for crimping?
Grey is the Color-Keyed die code for this conductor size. The color tells the installer which crimp die and tool setting to use, so the grey marking on the barrel should match the grey die index in your compression tool for the #4 AWG copper connector. It is not a phase or voltage marking.
7) Will these copper lugs hold up in a damp or outdoor utility enclosure?
The copper body is tinned, which is the standard surface protection for corrosion resistance and reduces galvanic trouble where the tongue bolts to an aluminum or plated bus pad. Tinned copper is what's normally specified for pad-mounted gear, substations and generator connections.
8) What quantity do these #4 AWG lugs come packed in?
Inner packs hold 50 pieces and the full outer carton holds 500. Weight runs 1.75 lbs per 100 pieces, which is useful if you're pricing freight on a bulk substation or MCC order.
9) Is Color-Keyed the same as Blackburn for these lugs?
Yes, the lug is labeled Color Keyed / Blackburn, with Color Keyed as the sub-brand. If your spec or submittal lists either name for a #4 AWG one-hole compression lug, this is the same product line.
How fast can I get the Color-Keyed 54140 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 Color-Keyed 54140 come with a warranty?
Absolutely. The Color-Keyed 54140 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 Color-Keyed 54140?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Color-Keyed 54140 from ZenSupply?
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