3M 7000031397 Copper One Hole Lug 3/0 Awg 35 Kv

Product Description

The 3M 7000031397 is a seamless, one-piece copper one-hole lug rated for use on copper conductors in high-voltage applications up to 35 kV. Manufactured from high-conductivity copper, this lug features a 1/2-inch stud size, a 0.490-inch inner diameter, and an overall length of 2.630 inches. The orange color coding helps identify conductor sizing during installation. Electricians and electrical contractors use this lug in medium-voltage cable termination work where a reliable, low-resistance mechanical connection is required. Its seamless construction eliminates weak points common in multi-piece assemblies, making it well suited for demanding power distribution environments.

This lug is intended for copper conductors sized at 3/0 AWG and is rated for systems up to 35 kV. It is appropriate for commercial, industrial, and utility electrical installations where medium-voltage termination hardware must meet strict mechanical and electrical integrity standards. The single-hole mounting configuration allows direct connection to bus bars, switchgear terminals, and similar fixed termination points.

Key Features

• One-piece seamless construction using high-conductivity copper
• Rated for copper conductors only — not for use with aluminum wire
• Voltage rating up to 35 kV for medium-voltage applications
• 1/2-inch stud size with 0.490-inch inner diameter
• Overall length of 2.630 inches for standard termination clearance
• Orange color coding for quick conductor size identification

Compatibility

Designed for use with 3/0 AWG copper conductors in medium-voltage electrical systems rated up to 35 kV. Compatible with single-hole mounting termination points such as bus bars and switchgear lugs. For use with copper conductors only.

Installation Notes

Installation should be performed by a licensed electrician familiar with medium-voltage termination procedures and applicable NEC requirements. De-energize and lock out the circuit completely before handling or installing this lug. Use the correct compression tooling specified for the conductor size and lug type to ensure a secure, gas-tight crimp. Do not use this lug on aluminum conductors.

Technical Specifications

• Conductor Size: 3/0 AWG
• Voltage Rating: Up to 35 kV
• Stud Size: 1/2 inch
• Inner Diameter: 0.490 inches
• Length: 2.630 inches
• Material: High-conductivity copper, seamless one-piece
• Color: Orange
• Weight: 0.09 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000031397