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The lubricants for electrical switches and contacts are basically insulators, nevertheless they have a positive effect on the reduction of wear, friction, fretting corrosion and distinguishing arcs. Compared with other applications, the proper selection of specialty lubricants plays the vital role for the lubrication of electrical switches and contacts.

In China, the most common used transformer oils are general mineral oils #10, #25 and #45 which comply with GB 2536 (flash point > 135°C). Meanwhile, LUBEFORCE provides Class K transformer oils which comply with IEC 61039 (flash point > 300°C), with higher fireproofing grade and lower noise (2~3 db).