Bimetallic lugs are specialized electrical connectors made from two different metals—typically aluminum (Al) and copper (Cu). They are designed to connect aluminum conductors to copper busbars or terminals, especially in cable termination kits used for medium and high-voltage electrical installations.

Why Bimetallic Lugs Are Used

• Prevent Galvanic Corrosion: Direct connection between aluminum and copper can lead to galvanic corrosion due to electrochemical differences. Bimetallic lugs avoid this issue by providing a safe transition.
• Efficient Current Flow: They ensure low resistance connections by combining metals with good electrical conductivity.
• Mechanical Strength: Bimetallic construction handles mechanical stresses and thermal expansion differences between aluminum and copper.