A DC isolator, also known as a PV disconnect switch, is a safety device designed to safely isolate direct current (DC) power in solar photovoltaic systems for maintenance, emergency shutdowns, and system protection. Engineered to handle high DC voltages and currents, it provides reliable load breaking, arc suppression, weather-resistant construction, and durable operation in outdoor environments. Its compact design, lockable handle, and compliance with solar safety standards make it an essential component for ensuring safe and efficient operation of residential, commercial, and industrial solar installations.