An Auto Main Failure Panel is an electrical panel that is designed to automatically switch the power source of a building or facility from the main power supply to an alternative source, such as a backup generator, in the event of a main power failure. This monitors the main power supply and automatically initiates the switch to the backup source if the main supply fails. The Auto Main Failure Panel may include a battery backup system that provides power to the control circuit and other critical components in the event of a power failure.