Thomas Betts 54168 Square Ring Terminal 4/0 Awg

Product Description

The THOMAS BETTS 54168 is a non-insulated square ring terminal designed for heavy-gauge compression connections in electrical power distribution and grounding applications. Rated for 4/0 AWG wire, it features a copper contact body with a titanium nitride (TiN) plating that resists corrosion and improves conductivity at the joint. The terminal measures 2.13 inches in length and 1.03 inches in width, with a 5/16-inch stud hole and a barrel thickness of 0.14 inches. It is identifiable by its purple color coding, which is standard for 4/0 AWG terminations. Licensed electricians and industrial maintenance technicians are the primary installers of this component.

This terminal is suited for residential, commercial, and industrial electrical work wherever 4/0 AWG conductors require a secure, low-resistance ring-lug connection. Typical applications include service entrance wiring, bus bar terminations, equipment grounding, and panel feeder connections. The compression-style connection method ensures a gas-tight crimp that meets code-level integrity requirements for high-ampacity circuits. The square ring profile provides flat, stable contact against bus bars and lug pads.

Key Features

• Compression connection for a gas-tight, high-integrity crimp on 4/0 AWG conductors
• Copper contact body with TiN plating for corrosion resistance and stable conductivity
• 5/16-inch stud hole fits standard bus bar and equipment stud sizes
• Non-insulated design allows direct inspection of the crimped barrel after installation
• Purple color coding follows standard AWG identification for 4/0 gauge terminations
• CSA Certified, UL Listed, and RoHS Compliant

Compatibility

Designed as an OEM-style compression ring terminal for 4/0 AWG copper conductors requiring a 5/16-inch stud termination in high-ampacity electrical installations.

Installation Notes

Installation must be performed by a licensed electrician in accordance with NEC requirements for high-ampacity terminations. De-energize and lockout/tagout the circuit before terminating any conductors. Use a compression crimping tool rated for 4/0 AWG terminals to achieve a proper gas-tight crimp. Do not attempt to crimp this terminal with undersized or ratchet tools that are not rated for the gauge.