A solar fireman switch is a safety device designed to protect firefighters and other emergency personnel working on a building with rooftop solar panels.

The switch is typically installed on the exterior of a building and can be activated by a firefighter or other emergency personnel in case of a fire or other emergency. When activated, the switch interrupts the flow of electricity from the solar panels to the building's electrical system, making it safe for firefighters to work without risk of electrical shock.

In some cases, solar fireman switches may also be required by local building codes or regulations. It is important to ensure that the switch is properly installed and maintained to ensure that it functions correctly in case of an emergency.