Thomas Betts 31011 Square Ring Terminal 2/0 to 4/0 Awg Compression

Product Description

The THOMAS BETTS 31011 is a non-insulated square ring terminal designed for heavy-duty compression connections on large-gauge conductors. It accommodates wire sizes from 2/0 to 4/0 AWG and uses a compression connection method for a secure, low-resistance termination. The terminal body is constructed from copper for reliable conductivity. Measuring 2.375 inches in overall length and 1 inch in ring width, this terminal is sized for high-current applications where a square ring profile is required. Licensed electricians and electrical contractors install this type of terminal in panel work, grounding assemblies, and high-ampacity feeder runs.

This terminal is suited for commercial and industrial electrical installations where large-gauge copper conductors must be terminated at bus bars, lugs, or equipment with a 3/8-inch stud. The square ring profile provides consistent seating against flat connection surfaces. It is a non-insulated design, meaning post-installation insulation or heat-shrink sleeving is applied at the installer's discretion based on application requirements and local code.

Key Features

• Accepts 2/0 to 4/0 AWG conductors via compression connection
• Square ring profile for flat-surface bus bar and lug terminations
• Copper contact material for low-resistance electrical continuity
• 3/8-inch stud size for standard heavy-duty terminal hardware
• Non-insulated construction compatible with post-install sleeving or taping
• CSA Certified, UL Listed (UL File E9809), and RoHS Compliant

Compatibility

Designed for use with 2/0 to 4/0 AWG conductors on 3/8-inch stud terminations in commercial and industrial electrical assemblies requiring a square ring terminal profile.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize the circuit and verify absence of voltage before terminating any conductors. Use a calibrated compression tool rated for the conductor gauge and terminal series to achieve a proper crimp. Do not over-compress or use mismatched tooling, as this can degrade the connection integrity.