Thomas Betts 54108 Square Ring Terminal 1 Awg

Product Description

The THOMAS BETTS 54108 is a non-insulated square ring terminal designed for compression connections on 1 AWG copper conductors. The terminal features a copper contact with a titanium nitride (TiN) plating that resists corrosion and wear under load. It measures 1.5 inches in overall length and 0.68 inches in width, with a barrel thickness of 0.11 inches. The 1/4-inch stud hole fits standard fastener hardware used in panel terminations, bus bar connections, and equipment grounding applications. Electricians and maintenance technicians install this terminal using a compression crimping tool to create a secure, gas-tight connection without insulation bulk.

This terminal is suited for residential and commercial electrical installations where 1 AWG conductors require a reliable mechanical and electrical termination. Common applications include main service panel feeders, grounding conductors, motor leads, and industrial control wiring. The green color coding is typically associated with equipment grounding per NEC convention, making it easy to identify in the field. The compact, square-ring geometry allows for clean, organized terminations in tight enclosures or on bus bars where space is limited.

Key Features

• Non-insulated square ring design for compact, low-profile terminations
• Compression connection type ensures a gas-tight, vibration-resistant crimp
• Copper contact with TiN plating for corrosion resistance and long-term conductivity
• 1/4-inch stud size fits standard panel and bus bar hardware
• Green color coding supports NEC-compliant equipment grounding identification
• CSA Certified, UL Listed, and RoHS Compliant

Compatibility

Designed as an OEM-style compression ring terminal for use with 1 AWG copper conductors requiring a 1/4-inch stud termination in electrical panels, grounding systems, and industrial wiring applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the circuit before terminating or replacing any ring terminal. Use a calibrated compression crimping tool rated for the wire gauge and terminal type to achieve a proper crimp. Do not use open-barrel pliers or non-rated tools, as an improper crimp can result in high-resistance connections or mechanical failure under load.