Ceramic crossarm insulator

Insulators are categorized by their installation methods, including suspended insulators and pillar insulators; by the type of insulating material, they can be porcelain, glass, or composite (also known as synthetic) insulators; by voltage levels, they are low-voltage or high-voltage insulators; by environmental conditions, there are dirt-resistant insulators for polluted areas; by voltage types, there are DC insulators. Additionally, there are special-purpose insulators like insulating crossarms, semiconductor glaze insulators, tension insulators for distribution use, reel insulators, and wiring insulators, among others. Furthermore, insulators are divided into two types based on the possibility of breakdown: Type A, non-breakdown, and Type B, breakdown-prone.