This guide explains the four main cable lug types — copper lugs, aluminium lugs, friction-welded bimetallic lugs and pre-insulated lugs — and shows how to match each one to the conductor and terminal materials, covering cable sizes from 10 mm² to 630 mm². You will learn the material grades that matter (T2/T3 copper, 1070 aluminium), what IEC 61238-1 type testing proves, and the three selection mistakes that lead to overheating and galvanic corrosion, so engineers and buyers can specify the right cable lug the first time.
A cable lug is the crimped or bolted metal fitting that terminates a power cable and bolts it to equipment. This engineer's guide covers the three lug metallurgies (copper, aluminum, bimetal Cu-Al), the governing standards (DIN 46235, IEC 61238-1, GB/T 14315), conductor sizing from 10 mm² to 630 mm², crimping best practice, and how to avoid the copper-aluminum galvanic corrosion trap. Drawn from 20+ years of manufacturing experience at MINGXU, an ISO 9001 / 14001 / 45001-certified supplier used in State Grid UHV projects and export markets worldwide.
