An outdoor high-voltage isolation switch is a mechanical device (typically 10 kV–40.5 kV) designed to disconnect circuits for maintenance, ensuring safe isolation in power transmission and substations. Featuring robust, weatherproof construction (stainless steel or hot-dip galvanized steel), it withstands extreme temperatures, UV exposure, and pollution. Key components include blade contacts, porcelain or composite insulators, and IP67-rated enclosures for dust/water resistance. Operated manually or via motorized mechanisms, it provides visible break points and interlocks to prevent accidental energization. Compliant with IEC 62271 or GB/T 11022 standards, advanced models integrate IoT sensors for real-time monitoring of contact wear, temperature, and position status. Corrosion-resistant coatings, anti-icing designs, and seismic resilience enhance reliability in harsh environments. Ideal for overhead lines, wind/solar farms, and industrial grids, it ensures operational safety, reduces downtime, and supports grid stability.