Polymer insulators, also known as composite insulators, are insulating devices used in various electrical and power systems. They are made of a composite material, typically consisting of a fiberglass reinforced epoxy rod surrounded by a silicone rubber housing. Polymer insulators are widely used in various electrical and utility applications for several reasons: It is important to note that the selection of insulator type depends on various factors, including voltage levels, environmental conditions, mechanical loads, and specific application requirements. Consulting with electrical engineers or industry experts can provide further insights into the appropriate choice of insulator for a particular application.