3M 7000031389 Copper One Hole Lug 4 Awg 35 Kv

Product Description

The 3M 7000031389 is a copper one-hole lug rated for use up to 35 kV on copper conductors only. Built from one-piece, seamless, high-conductivity copper, this lug delivers reliable, low-resistance terminations in medium-voltage electrical applications. The barrel inside diameter measures 0.247 inches with an overall length of 1.940 inches and a 1/4-inch stud size. Its gray color coding aids quick identification during installation. Licensed electricians working on medium-voltage cable terminations will find this lug suited to demanding conductor connection work where integrity and conductivity are critical.

This lug is intended for copper conductor terminations in medium-voltage systems up to 35 kV. Typical applications include switchgear, transformer connections, and medium-voltage cable assemblies in commercial and industrial electrical installations. The one-hole mounting design allows straightforward bolted termination to bus bars or equipment studs.

Key Features

• Rated for systems up to 35 kV
• One-piece, seamless, high-conductivity copper construction
• Compatible with 4 AWG copper conductors
• Barrel inside diameter: 0.247 inches
• Overall length: 1.940 inches
• 1/4-inch stud size for single-bolt termination

Compatibility

Designed for use with 4 AWG copper conductors only in medium-voltage electrical systems rated up to 35 kV. Not rated for aluminum conductors.

Installation Notes

Installation should be performed by a licensed electrician following applicable NEC requirements and local code. De-energize and verify absence of voltage on all conductors before terminating. Use the manufacturer-specified compression tool to achieve a proper crimp; improper tooling can compromise the connection. Inspect the finished termination for correct seating before restoring power.

Technical Specifications

• Voltage Rating: up to 35 kV
• Wire Size: 4 AWG
• Inside Diameter: 0.247 inches
• Length: 1.940 inches
• Stud Size: 1/4 inch
• Material: Seamless high-conductivity copper
• Color: Gray
• Weight: 0.03 pounds
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000031389