Thomas Betts 17222-5-BD Ring Terminal 4/0 Awg

Product Description

The THOMAS BETTS 17222-5-BD is a ring terminal designed for use with 4/0 AWG wire and a 5/16 inch stud. Ring terminals provide a secure, low-resistance connection between large-gauge conductors and bolted lug points on electrical equipment. This terminal accepts the barrel of a 4/0 AWG conductor and fastens to a 5/16 inch threaded stud. It is a single-piece, sold-per-unit terminal suited for power distribution, grounding, and heavy-current circuit terminations. Electricians and electrical contractors install these terminals where reliable, permanent mechanical and electrical connections are required on large-conductor runs.

This terminal is appropriate for residential, commercial, and light industrial electrical applications where 4/0 AWG conductors terminate at bus bars, battery lugs, panelboard studs, or equipment grounding points. Typical install scenarios include service entrance wiring, generator hookups, large motor circuits, and battery bank connections. The 5/16 inch stud size fits commonly found bolted connection points on electrical panels and distribution equipment.

Key Features

• Accepts 4/0 AWG wire for heavy-current conductor termination
• 5/16 inch stud hole fits standard bolted lug and bus bar connection points
• Ring-style barrel provides a secure, captive connection that resists pull-out
• Sold individually, allowing single-piece procurement as needed

Compatibility

Designed as an OEM-style ring terminal for use with 4/0 AWG conductors on 5/16 inch stud termination points in electrical power distribution and grounding applications.

Installation Notes

Installation is performed by a licensed electrician in accordance with NEC requirements for large-conductor terminations. De-energize and lock out the circuit before stripping and inserting the conductor into the barrel. Use a ratcheting crimping tool rated for 4/0 AWG terminals to achieve a full, gas-tight crimp. Inspect the completed crimp for proper seating before torquing the stud fastener to the equipment manufacturer specification.