120mm Bimetallic Thimble / Cable Lugs (3 pcs)

120mm Bimetallic Thimble / Cable Lugs (3 pcs)

• Bimetallic lugs are heavy-duty, high-conductivity electrical terminals engineered specifically to interface aluminum conductors with copper termination points.
• In modern power networks, aluminum is frequently chosen for long-distance and industrial cabling due to its lightweight profile and lower cost.
• However, most electrical switchgear, circuit breakers, and distribution busbars utilize copper terminals.
• Joining these two dissimilar metals directly triggers galvanic corrosion and thermal failure.
• Bimetallic lugs solve this problem through a bi-material construction that safely bridges the two metals.
• A bimetallic lug consists of two distinct components permanently joined together
• The Barrel (Aluminum Section): Fabricated from high-purity, structural aluminum.
• This hollow sleeve receives the stripped aluminum cable strands.
• The Palm (Copper Section): CNC-machined from high-conductivity electrolytic copper.
• The flat palm features one or more bolt holes to secure the fitting onto a copper terminal or busbar.

• • The Friction Weld: The critical junction where the aluminum barrel meets the copper palm.
  • Manufacturers rotate one component under extreme hydraulic pressure against the other.
  • The friction generates localized heat that fuses the two metals at an atomic level without melting them.
  • This solid-state weld eliminates any microscopic air gaps or moisture entry points, ensuring zero ionic transfer across the boundary.

• Distribution Panels & Switchgear: Connecting incoming aluminum power mains to copper distribution busbars.

• Solar & Renewable Energy Systems: Safely transitioning aluminum solar array wiring to copper inverter and breaker lugs.

• Industrial & Commercial Cabling: High-power installations requiring long-run aluminum cabling terminated onto standard copper gear.