A solar DC isolator switch is used to disconnect solar photovoltaic panels from the inverter or load. It provides a safe isolation between the DC side and AC side of the solar system. This allows the solar panels to be serviced without risking the safety of maintenance personnel or damaging equipment. It is usually installed between solar panels and inverters or charge controllers. The key function is to cut off the high DC voltage from solar panels when needed for security and maintenance reasons. It is an essential safety and protection device for any grid-tied or off-grid solar power systems.
