{"product_id":"thomas-betts-54139-square-ring-terminal-4-awg-5-16-stud","title":"Thomas Betts 54139 Square Ring Terminal 4 Awg 5\/16 Stud","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe THOMAS BETTS 54139 is a non-insulated square ring terminal designed for compression-style wire termination in electrical panel, grounding, and equipment bonding applications. Built with a copper contact body and titanium nitride (TiN) plating, it accepts 4 AWG conductors and seats on a 5\/16-inch stud. The terminal measures 1.42 inches in overall length and 0.61 inches in ring width, with a barrel thickness of 0.070 inches. Gray color coding aids identification during installation. This terminal meets CSA, UL, and RoHS requirements, making it appropriate for use in listed electrical assemblies and compliance-sensitive installations.\u003c\/p\u003e\u003cp\u003eThis square ring terminal is suited for residential and commercial electrical work where a secure, low-resistance compression connection is required at a stud or bus bar termination point. Typical applications include electrical panel terminations, equipment grounding conductors, motor lead connections, and industrial control wiring. The compression-style connection eliminates the need for solder, providing a gas-tight mechanical bond. Electricians and panel builders working with 4 AWG copper or aluminum conductors will find this terminal appropriate for standard termination tasks at 5\/16-inch stud hardware.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNon-insulated square ring design for 5\/16-inch stud mounting\u003c\/li\u003e\n\u003cli\u003eCompression connection for a gas-tight, solder-free termination\u003c\/li\u003e\n\u003cli\u003eCopper contact body with TiN (titanium nitride) plating for corrosion resistance and conductivity\u003c\/li\u003e\n\u003cli\u003eCompatible with 4 AWG wire size\u003c\/li\u003e\n\u003cli\u003eGray color for field identification\u003c\/li\u003e\n\u003cli\u003eUL Listed, CSA Certified, and RoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style compression ring terminal for use with 4 AWG conductors on 5\/16-inch stud terminations in standard electrical panel and equipment bonding applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with NEC requirements. De-energize and lock out the circuit before terminating conductors. Use a calibrated compression crimping tool rated for the appropriate die set and wire gauge to achieve a proper gas-tight connection. Do not over-crimp or substitute a ratchet tool that is not rated for this terminal type, as an improper crimp may result in a high-resistance connection.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type\u003c\/strong\u003e: Square Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation Type\u003c\/strong\u003e: Non-Insulated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: Compression\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Wire Size\u003c\/strong\u003e: 4 AWG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStud Size\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Material\u003c\/strong\u003e: Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Plating\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.42 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Width\u003c\/strong\u003e: 0.61 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Thickness\u003c\/strong\u003e: 0.0700 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Gray\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: UL Listed, CSA Certified, RoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: THOMAS BETTS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 54139\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"THOMAS \u0026 BETTS","offers":[{"title":"Default Title","offer_id":51538395169074,"sku":"54139","price":17.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9623048488b14829c3b18c40bca2a41b.jpg?v=1785824389","url":"https:\/\/voomisupply.com\/products\/thomas-betts-54139-square-ring-terminal-4-awg-5-16-stud","provider":"Voomi Supply","version":"1.0","type":"link"}