Thomas Betts 54170 Square Ring Terminal 4/0 Awg Compression

Product Description

The THOMAS BETTS 54170 is a non-insulated square ring terminal designed for heavy-duty electrical termination using a compression connection method. Built with a copper contact and titanium nitride (TiN) plating, this terminal provides reliable conductivity and corrosion resistance at the connection point. Rated for 4/0 AWG wire, it measures 2.5 inches in overall length and 1.03 inches in ring width, with a 0.14 inch contact thickness. The 1/2 inch stud size accommodates standard heavy-gauge lug applications. Electricians and electrical contractors install this terminal wherever large-conductor compression terminations are required.

This terminal is suited for commercial and industrial electrical installations where 4/0 AWG conductors are terminated to bus bars, switchgear, motor leads, or similar high-current connection points. The square ring profile provides positive seating against flat mounting surfaces, reducing the risk of the terminal rotating during tightening. The purple color coding assists with wire gauge identification during installation and inspection. Its non-insulated design is appropriate for use inside enclosures or conduit bodies where post-termination insulation is applied separately or not required by the application.

Key Features

• Compression connection for secure, gas-tight termination on 4/0 AWG conductors
• Copper contact with TiN (titanium nitride) plating for conductivity and corrosion resistance
• Square ring profile seats flat against bus bars and mounting surfaces
• 1/2 inch stud size fits standard heavy-gauge terminal hardware
• Purple color coding aids wire gauge identification on the job
• CSA Certified, UL Listed, and RoHS Compliant

Compatibility

Designed as a compression-style square ring terminal for 4/0 AWG conductors with a 1/2 inch stud size, suitable for use in high-current electrical termination applications where a non-insulated square ring lug is specified.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize and lock out the circuit before installing or removing any terminal lug. Use a calibrated compression tool rated for the appropriate die and conductor size to achieve a proper crimp. Do not over-strip the conductor insulation beyond the barrel depth of the terminal.