{"product_id":"thomas-betts-54178-square-ring-terminal-5-16-stud-copper","title":"Thomas Betts 54178 Square Ring Terminal 5\/16 Stud Copper","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe THOMAS BETTS 54178 is a non-insulated square ring terminal designed for compression-style electrical connections in professional wiring applications. It features a copper contact body with a titanium nitride (TiN) plating for corrosion resistance and reliable conductivity. The terminal measures 2.33 inches in overall length and 1.25 inches in ring width, with a 5\/16-inch stud hole size. Electricians and panel technicians use this terminal to create permanent, low-resistance lug connections on wire ends before securing them to buss bars, ground lugs, or equipment terminals. Its non-insulated design is appropriate where sleeving or heat shrink will be applied separately or where code does not require insulated terminations.\u003c\/p\u003e\n\u003cp\u003eThis square ring terminal is used in commercial and residential electrical work wherever a compression-crimped, non-insulated ring lug is required. Typical applications include control panel wiring, grounding conductors, switchgear assembly, and equipment termination. The square ring profile seats flush against standard hardware fasteners and prevents rotation during tightening. Electricians and industrial maintenance techs are the primary installers. Sold individually, it is suited for single-unit replacement or low-volume panel work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNon-insulated square ring design seats flat against buss hardware and resists rotation under torque\u003c\/li\u003e\n  \u003cli\u003eCopper contact body provides high conductivity for power and grounding circuits\u003c\/li\u003e\n  \u003cli\u003eTitanium nitride (TiN) contact plating enhances corrosion resistance and long-term connection integrity\u003c\/li\u003e\n  \u003cli\u003eCompression connection type requires a proper ratchet or hex crimp tool for a gas-tight termination\u003c\/li\u003e\n  \u003cli\u003e5\/16-inch stud size fits standard electrical fastener hardware\u003c\/li\u003e\n  \u003cli\u003eRoHS compliant construction for use in environmentally regulated installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style compression ring terminal for use in standard electrical panel, switchgear, and grounding applications requiring a non-insulated square ring lug with a 5\/16-inch stud size.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified electrician in accordance with NEC requirements for terminal connections. De-energize the circuit and verify absence of voltage before terminating any conductor. Use a calibrated ratchet crimp tool rated for the wire gauge and terminal type to ensure a proper compression connection. Do not use pliers or uncalibrated tools, as an improper crimp can result in a high-resistance joint or conductor pullout.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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\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\u003eStud Size\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.33 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRing Width\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.15 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: White\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompliance\u003c\/strong\u003e: RoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 54178\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"THOMAS \u0026 BETTS","offers":[{"title":"Default Title","offer_id":51539472843058,"sku":"54178","price":18.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fd0842d9209c12d6e96f4e6b46a15375.jpg?v=1785840953","url":"https:\/\/voomisupply.com\/products\/thomas-betts-54178-square-ring-terminal-5-16-stud-copper","provider":"Voomi Supply","version":"1.0","type":"link"}