3M 7100011437 Large Gauge Ring Tongue Copper Lug MC2/0

Product Description

The 3M 7100011437 is a large gauge ring tongue terminal designed for copper, non-insulated, seamless crimp connections. This lug is built for high-capacity wire terminations where a reliable, low-resistance mechanical and electrical connection is required. Sized for MC2/0 wire and a 3/8-inch stud, it suits heavy-duty electrical work in industrial, commercial, and utility installations. The seamless barrel construction eliminates weld seams that can crack under crimping force, producing a uniform, gas-tight connection. Electricians and utility technicians working with large-gauge secondary conductors will find this terminal sized and rated for demanding applications.

This ring tongue terminal is intended for use in large-gauge secondary electrical systems where a secure, permanent lug connection is needed. Typical applications include panel terminations, transformer secondary connections, and heavy feeder work. The 3/8-inch stud hole fits standard bus bar and terminal block configurations common in commercial and industrial electrical distribution. It is sold individually and packaged with a minimum quantity of 100 units, making it appropriate for contractors stocking hardware for larger jobs or service fleets.

Key Features

• Seamless barrel construction eliminates weld seams for consistent, reliable crimps on large-gauge wire
• Non-insulated copper body provides a direct, low-resistance electrical connection
• Sized for MC2/0 conductor with a 3/8-inch stud hole
• Ring tongue configuration ensures the terminal stays captured on the stud even before fastener tightening
• Sold per unit with a minimum order quantity of 100

Compatibility

Designed as an OEM-style crimp lug for MC2/0 copper conductors terminating on 3/8-inch studs in commercial and industrial electrical distribution applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC requirements for large-gauge conductor terminations. De-energize and lock out the circuit before installing or removing any lug from a live panel, bus bar, or transformer secondary. Use a ratcheting or hydraulic crimping tool rated for the conductor size and lug barrel to achieve a proper gas-tight crimp. Do not attempt to solder this non-insulated lug after crimping, as heat damage can compromise the barrel-to-conductor joint.