3M 7000031375 Copper Barrel Connector 4/0 Awg 35 Kv

Product Description

The 3M 7000031375 is a copper standard barrel connector designed for splicing copper conductors in medium-voltage electrical applications up to 35 kV. Built from one-piece, seamless, high-conductivity copper, this connector eliminates the weak points associated with seamed or crimped-tube designs. It is sized for 4/0 AWG conductors and features a violet color code for quick visual identification during installation and inspection. Electricians and utility technicians working on medium-voltage cable splices will find this connector suited for demanding, high-reliability connections where conductor integrity is critical.

This connector is intended for use on copper conductors only. It is well-suited for medium-voltage distribution systems, underground cable splicing, and industrial wiring applications where rated voltage levels reach up to 35 kV. The 4/0 AWG sizing makes it appropriate for feeder and branch circuits requiring high-ampacity conductors. At 2.1 inches in length with a 0.54-inch inner diameter, it accommodates standard 4/0 AWG copper cable geometry without modification.

Key Features

• One-piece, seamless, high-conductivity copper construction for reliable, low-resistance splices
• Rated for use up to 35 kV in medium-voltage applications
• Sized for 4/0 AWG copper conductors with a 0.54-inch inner diameter
• Violet color coding for fast conductor size identification in the field
• 2.1-inch barrel length provides adequate contact area for secure crimps
• Copper-only design preserves conductor material compatibility and connection integrity

Compatibility

Designed for use with 4/0 AWG copper conductors only. Suitable for medium-voltage splicing applications rated up to 35 kV. Not intended for use with aluminum conductors.

Installation Notes

Installation should be performed by a qualified electrician or licensed lineman following applicable NEC requirements and local codes for medium-voltage work. De-energize and verify the absence of voltage on all conductors before beginning any splice work. Use only a calibrated compression tool rated for the connector size and conductor AWG to achieve a proper crimp. Do not attempt to use this connector on aluminum conductors, as it is rated for copper only.

Technical Specifications

• Conductor Size: 4/0 AWG
• Maximum Voltage Rating: 35 kV
• Inner Diameter: 0.54 inches
• Barrel Length: 2.1 inches
• Material: Seamless high-conductivity copper
• Color Code: Violet
• Weight: 0.11 pounds
• Sold As: Each (minimum order quantity: 10)

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000031375