3M 7000031371 Copper Barrel Connector 1 Awg 35 Kv Green

Product Description

The 3M 7000031371 is a copper standard barrel connector rated for use on copper conductors up to 35 kV. Sized for 1 AWG wire, this connector features a one-piece, seamless construction made from high-conductivity copper, ensuring low-resistance joints in high-voltage splicing applications. At 1.880 inches in length with an inner diameter of 0.358 inches, it is color-coded green for fast identification in the field. Licensed electricians and utility linemen install this type of connector when making straight inline splices on copper distribution and feeder conductors.

This barrel connector is suited for medium-voltage copper conductor splicing in residential, commercial, and utility electrical systems operating up to 35 kV. Its seamless one-piece design eliminates potential weak points at seams, making it appropriate for direct-burial, conduit, and aerial applications where a reliable, mechanically sound splice is required. It is sold individually (each unit) with a minimum order quantity of 10.

Key Features

• Rated up to 35 kV for medium-voltage copper conductor applications
• One-piece, seamless high-conductivity copper construction for low-resistance connections
• Sized for 1 AWG copper conductors with a 0.358-inch inner diameter
• 1.880-inch overall length for compact inline splicing
• Green color coding for quick field identification
• Compatible with copper conductors only — not intended for aluminum wire

Compatibility

Designed for use with 1 AWG copper conductors only. Not suitable for aluminum or copper-clad aluminum wire. Rated for systems up to 35 kV.

Installation Notes

Installation should be performed by a licensed electrician following applicable NEC requirements and local codes for medium-voltage splicing. De-energize and verify absence of voltage on all conductors before beginning any splice work. Use the appropriate compression tooling specified for this connector size and conductor gauge to achieve a proper crimp — improper tooling can result in a failed splice. Inspect the finished connection for correct seating and conductor insertion depth before re-energizing the circuit.

Technical Specifications

• Conductor Size: 1 AWG
• Voltage Rating: Up to 35 kV
• Length: 1.880 inches
• Inner Diameter: 0.358 inches
• Material: High-conductivity copper, seamless one-piece
• Color: Green
• Weight: 0.04 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000031371