Composite polymer pin insulators consist of a polymeric housing over a fiberglass rod to which galvanized steel or aluminum end fittings are attached.

By molding directly over the end fitting, moisture ingress to the fiberglass rod is prevented by creating a chemical bond between the end fittings and the sheds.

The key features of composite polymer pin insulators
◆ High-strength porcelain core
◆ Protected creepage silicone housing
◆ Designed especially for highly polluted areas, self-cleaning
◆ Corrosion-resistant galvanized steel end fitting
◆ Excellent earthquake resistance
◆ Light weight, easy to install

Composite polymer pin insulators are one main king of composite insulators used medium voltage distribution lines made by silicone rubber materials.

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