In electrical installations, bimetallic connectors and bimetallic lugs are used interchangeably in everyday language, but they have different functions and designs and are applied differently. Bimetallic connectors are employed to connect two unlike metal conductors—most commonly copper and aluminium—while providing a safe and effective current transfer and avoiding galvanic corrosio... https://www.pioneerpowers.com/bimetallic-lugs-and-connectors.php