Thomas & Betts 54165 Color-Keyed 1-Hole Compression Lug, 300 kcmil, 1/2" Stud, Die Code 66, Lot of 10

The Thomas & Betts 54165 Color-Keyed compression lugs are high-quality electrical connectors designed for secure termination of large conductors in power distribution systems. These 1-hole barrel lugs accommodate 300 kcmil (MCM) copper or aluminum conductors and feature a 1/2-inch stud hole for bolting to busbars, transformers, or switchgear. The color-keyed system (white for die code 66) ensures proper crimping with matching tools, reducing installation errors and enhancing reliability. Made from high-conductivity copper with tin plating for corrosion resistance, they provide low-resistance connections ideal for industrial, commercial, and utility applications such as substations, motor controls, and heavy machinery. Advantages include superior pull-out strength, compatibility with T&B compression tools, and UL listing for safety. Compared to similar products from competitors like Burndy or Ilsco, T&B lugs offer better color-coding for foolproof installation and a proven track record in harsh environments. Drawbacks may include higher cost for premium quality and the need for specific crimping dies. This lot of 10 appears to be in used condition with minor wear but remains functional, suitable for surplus inventory or maintenance spares. Overall, these lugs ensure efficient power transmission with minimal voltage drop and long-term durability.