3M 7000031402 Copper Long Barrel Lug 250 Kcmil 35 Kv

Product Description

The 3M 7000031402 is a one-hole long barrel copper compression lug designed for use on copper conductors only. Built from one-piece, seamless, high-conductivity copper, this lug is rated for systems up to 35 kV and accommodates 250 kcmil conductors. It features a 1/2 inch stud size, an inner diameter of 0.590 inches, and a barrel length of 3.380 inches. The yellow color coding aids in quick conductor size identification on the job. Licensed electricians and utility technicians install this lug in medium-voltage termination applications where a reliable, low-resistance mechanical and electrical connection is required.

This lug is suited for medium-voltage electrical distribution work in commercial, industrial, and utility installations. The long barrel design provides extended contact surface area with the conductor, supporting solid compression terminations. It is intended for copper conductor use only and is color-coded yellow for 250 kcmil identification. Typical install scenarios include switchgear terminations, transformer connections, and cable splicing up to 35 kV.

Key Features

• One-piece seamless construction eliminates weak points in the barrel
• High-conductivity copper material supports efficient current transfer
• Rated for systems up to 35 kV
• Accepts 250 kcmil copper conductors with a 0.590 inch inner diameter
• Long barrel design at 3.380 inches provides extended conductor contact
• Yellow color coding for fast field identification of conductor size

Compatibility

Designed for use with copper conductors only at 250 kcmil. Compatible with applications rated up to 35 kV. Not suitable for aluminum conductors.

Installation Notes

Installation should be performed by a licensed electrician following applicable NEC guidelines and local codes for medium-voltage terminations. De-energize and verify the absence of voltage on all conductors before beginning termination work. Use the compression tool and die set specified for 250 kcmil copper lugs to achieve a proper crimp. Do not use this lug on aluminum conductors.

Technical Specifications

• Conductor Size: 250 kcmil
• Voltage Rating: Up to 35 kV
• Stud Size: 1/2 inch
• Inner Diameter: 0.590 inches
• Barrel Length: 3.380 inches
• Material: Seamless high-conductivity copper
• Color Code: Yellow
• Weight: 0.18 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000031402