Robust switch disconnector for 10kV to 100kV power systems, supporting 630A-4000A load control. Designed for outdoor substations and industrial grids, this electrical isolator switch ensures safe circuit isolation with double-column horizontal open contacts. Corrosion-resistant structure withstands harsh environments , while manual operation guarantees visible break status for maintenance safety. Ideal for transformer stations, wind farms, and utility networks requiring reliable high voltage isolation switch performance.