Porcelain insulators are electrical insulators crafted from porcelain, an inert ceramic material composed of clay, feldspar, and quartz. Porcelain insulators are widely used in electrical power systems to support and isolate conductors from supporting structures. With high mechanical strength and resistance against moisture, heat, and pollution; porcelain offers excellent electrical insulating properties.

Porcelain insulators are constructed to withstand high voltages while providing reliable insulation in various weather conditions, and are commonly found in overhead power transmission lines, substations, transformers and other electrical equipment. Their use includes providing support for conductors while preventing current leakage or arcing and helping conductors stay cool and prevent leakage or arcing from current leakage or arcing – these porcelain insulators come in various shapes and sizes depending on your application needs.

Porcelain insulators are usually coated with a glaze for additional protection against moisture absorption and pollution accumulation, and to enhance electrical performance by decreasing surface leakage currents.