Thomas Betts 31003 Square Ring Terminal 14-8 Awg Compression

Product Description

The THOMAS BETTS 31003 is a non-insulated square ring terminal designed for permanent compression connections in electrical wiring applications. Compatible with wire gauges from 14 to 8 AWG, this terminal accepts a 1/4 inch stud and features a copper contact for reliable conductivity. It measures 1.125 inches in overall length and 0.5 inches in ring width, with a thickness of 0.125 inches. Electricians and electrical contractors install this terminal using a compression crimping tool to create a secure, low-resistance connection at terminal blocks, bus bars, or equipment lugs. Its square ring profile locks onto stud hardware to resist rotation during tightening.

This square ring terminal is suited for residential and commercial electrical installations where a non-insulated, compression-style lug is required. Typical applications include panel wiring, equipment grounding, motor connections, and control panel terminations. The copper contact material ensures good conductivity across the supported AWG range. Installers working to NEC standards will find this terminal appropriate for use in control enclosures, junction boxes, and power distribution assemblies where a secure mechanical and electrical connection is needed.

Key Features

• Square ring profile resists rotation when fastened to stud hardware
• Compression connection type for a reliable, gas-tight crimp
• Compatible wire range: 14 to 8 AWG
• Copper contact material for low-resistance conductivity
• Fits 1/4 inch stud size
• CSA Certified, UL Listed (UL File E9809), and RoHS Compliant

Compatibility

Designed as an OEM-style compression ring terminal for use with 14 to 8 AWG wire on 1/4 inch stud fasteners in standard electrical termination applications.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC requirements. De-energize and lock out the circuit before terminating any conductors. Use a properly calibrated compression crimping tool rated for the AWG being terminated to achieve a secure, gas-tight crimp. Do not over-tighten the stud fastener beyond the hardware manufacturer's specification for the mounting surface.