Thomas Betts 58177 Square Ring Terminal 1/2 Inch Stud

Product Description

The THOMAS BETTS 58177 is a non-insulated square ring terminal designed for compression-style wire termination in heavy-duty electrical applications. The terminal features a copper contact body with a titanium nitride (TiN) plating for enhanced conductivity and corrosion resistance. At 3.31 inches in overall length and 1.61 inches in ring width, this terminal accommodates a 1/2 inch stud size. It is rated CSA Certified, UL Listed, and RoHS Compliant, making it suitable for use in regulated commercial and industrial electrical installations. Electricians and electrical contractors install this terminal in panel wiring, grounding connections, and power distribution assemblies where a secure, bare mechanical crimp connection is required.

This square ring terminal is used in commercial and industrial wiring scenarios where non-insulated, compression-type terminations are specified. Its square ring geometry provides a positive mechanical fit on 1/2 inch studs, reducing the risk of terminal rotation during torquing. Typical applications include bus bar connections, grounding lugs, and high-current power distribution terminals in switchgear, control panels, and large electrical enclosures.

Key Features

• Non-insulated square ring design for compression crimp termination onto 1/2 inch studs
• Copper contact material with TiN (titanium nitride) plating for conductivity and corrosion resistance
• 0.2200 inch barrel thickness for robust mechanical integrity under high-torque installation
• CSA Certified, UL Listed, and RoHS Compliant for use in regulated electrical systems
• 1.61 inch ring width and 3.31 inch overall length suit heavy-conductor termination applications

Compatibility

Designed as an OEM-style compression ring terminal for 1/2 inch stud electrical connections in commercial and industrial panel wiring and grounding applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize and lockout/tagout the circuit before installing or replacing any terminal connector. Use a calibrated compression crimping tool rated for the conductor gauge and terminal type to ensure a proper mechanical and electrical connection. Do not reuse a compression terminal once crimped, as the connection cannot be reliably re-terminated.