3M 7000031372 Copper Barrel Connector 1/0 Awg 35 Kv

Product Description

The 3M 7000031372 is a copper standard barrel connector designed for splicing copper conductors in medium-voltage electrical applications rated up to 35 kV. Sold individually, this connector is constructed from one-piece, seamless, high-conductivity copper, ensuring low-resistance continuity at the splice point. It accepts 1/0 AWG copper conductors, measures 1.880 inches in length, and has an inner diameter of 0.394 inches. The pink color coding assists with quick AWG identification during installation. Licensed electricians working on medium-voltage cable systems are the primary installers of this fitting.

This barrel connector is suited for use in medium-voltage copper conductor splicing applications where a seamless, one-piece connector body is required. Typical install scenarios include underground residential distribution, commercial cable splice kits, and utility service work where conductors must be joined end-to-end. The connector is rated up to 35 kV, making it appropriate for distribution-class wiring assemblies. It is sold as a single unit with a minimum order quantity of 10 pieces.

Key Features

• One-piece, seamless construction eliminates weld points that can introduce resistance or failure risk
• High-conductivity copper body for low-resistance conductor splicing
• Rated up to 35 kV for medium-voltage distribution applications
• Accepts 1/0 AWG copper conductors only — not rated for aluminum
• Pink color coding for fast AWG identification in the field
• Compact form factor at 1.880 inches in length with a 0.394-inch inner diameter

Compatibility

Designed for use with 1/0 AWG copper conductors only. This connector is not suitable for aluminum or copper-clad aluminum conductors. Consult the full splice kit assembly requirements when used as part of a medium-voltage termination or splice system.

Installation Notes

Installation should be performed by a qualified electrician familiar with medium-voltage cable systems and applicable NEC requirements. De-energize and verify the absence of voltage on all conductors before beginning any splice work. Follow the manufacturer splice kit instructions for proper compression tool selection and die indexing — using an incorrect die size can result in an incomplete crimp and a failed connection. Inspect the completed crimp for full conductor insertion and uniform compression before applying insulation or jacket materials.

Technical Specifications

• Conductor Size: 1/0 AWG
• Voltage Rating: Up to 35 kV
• Length: 1.880 inches
• Inner Diameter: 0.394 inches
• Material: Seamless high-conductivity copper
• Color: Pink
• Weight: 0.06 pounds
• Sold As: Each (minimum order quantity: 10)

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000031372