In Bi-Metal lugs barrel of the lug is of aluminium and the head or palm of the lug is of copper. This ensures contact between aluminium cable to terminal lug is of aluminium and contact between terminal lug to copper bus bar or contact is of copper. Thus contact between dissimilar metal is avoided and contact between similar metal is established. Thus Bi-Mettalic or galvanic action is completely eliminated and hence technically sound and durable joint is achieved.

Electrolytic copper head / palm is friction welded to electrolytic aluminium barrel. At the interface, copper molecules and aluminium molecules intermingles with each other and form durable bond. Similarly if aluminium cable is to be joined with copper cable then Bi-Metal in line connectors are to be used. Here for aluminium cable aluminium barrel is provided and for copper cable copper barrel is provided. Copper and aluminium barrels are friction welded. Depending upon application Bi-Metal terminals, in line connectors, pin type connectors etc are manufactured.

Note : In case if copper cable is to be terminated on aluminium bus bar / aluminium contact, then reverse Bi-Metallic lugs can also be manufactured against specific order. In reverse Bi- Metal lugs barrel is of copper and head is of aluminium.