As a professional ceramic insulator supplier, offer different kinds of Station Post Insulator for Substation, Line Post Insulator, disc suspension insulator, etc. Ceramic Insulators are manufactured in various sizes and also as per customers requirement. What is a ceramic insulator Ceramic insulators are ceramic materials used to insulate electrically-conductive materials or temperature-controlled enclosures. In the context of electrical insulation, ceramic insulators are usually limited to the insulation of electrically conductive materials on an industrial or municipal scale. Advantage Ceramic insulators have good chemical and thermal stability, almost no aging deterioration, and have good electrical and mechanical properties.