3M 7000140667 Copper Two Hole Long Barrel Lug 3/0 Awg

Product Description

The 3M 7000140667 is a copper two hole long barrel lug rated for use up to 35 kV, designed for terminating 3/0 AWG copper conductors in medium-voltage electrical systems. Built from one-piece, seamless, high-conductivity copper, this lug delivers reliable electrical continuity at the termination point. It features a 1/2 inch stud size, a 0.49 inch inner diameter, and an overall length of 5.13 inches. The two-hole long barrel design provides secure mechanical attachment and extended conductor engagement, reducing resistance at the connection. Licensed electricians working on medium-voltage distribution and industrial power systems install this type of lug.

This lug is intended for use on copper conductors only and is suited for medium-voltage applications up to 35 kV. Typical installation scenarios include switchgear terminations, transformer connections, and cable tray distribution panels in industrial and commercial facilities. The orange color coding assists with conductor size identification during installation and inspection. It is sold individually, with a minimum order quantity of 10 units.

Key Features

• One-piece seamless construction from high-conductivity copper minimizes resistance and eliminates weak points
• Long barrel design provides extended conductor contact for secure mechanical and electrical termination
• Two-hole mounting pattern ensures stable, vibration-resistant attachment to bus bars and equipment lugs
• Rated up to 35 kV for medium-voltage distribution applications
• 1/2 inch stud size with 0.49 inch inner diameter fits 3/0 AWG copper conductors
• Orange color coding aids conductor size identification in the field

Compatibility

Designed for use with 3/0 AWG copper conductors only in medium-voltage systems rated up to 35 kV. This lug is not rated for aluminum conductors.

Installation Notes

Installation should be performed by a licensed electrician following applicable NEC requirements and local codes for medium-voltage terminations. De-energize and lock out the circuit before beginning any termination work. Use the appropriate compression tooling specified for the lug barrel diameter to achieve a proper crimp — do not use mechanical set-screw methods unless explicitly rated for this lug. Torque the mounting hardware to the equipment manufacturer's specified values for the stud size used.

Technical Specifications

• Conductor Size: 3/0 AWG
• Voltage Rating: Up to 35 kV
• Stud Size: 1/2 inch
• Inner Diameter: 0.49 inches
• Overall Length: 5.13 inches
• Material: Seamless high-conductivity copper
• Color: Orange
• Mounting Holes: Two hole
• Weight: 0.02 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 10
• UPC: 00051138692469

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000140667