Like plug-in connections, switches are usually used on electrical contacts. Their task is to establish a safe electrical current flow and to interrupt it on purpose. Contact cycles, contact forces, voltage and other envrionmental influences such as vibrations, humidity and dust vary from application to application. Reliable switching is essential for safe operation, especially with safety switches. 

The right lubricants protects the electrical contact from excessive wear, reduces insertion/actuating forces, protects the contact partners from oxidation and contamination, prevents arcing and thus allows the lowest possible electrical resistance. Typical lubricants for electrical contacts are insulators.