How to make automatic changeover switch | Change over Switch Using Contactor | Technical Learning

An automatic changeover switch, also known as a transfer switch, is a device that automatically switches an electrical power source from one source to another. This is typically used to provide a backup power source in case of a power outage. The automatic changeover switch has two input sources, such as utility power and a generator, and one output source. When the primary power source is working normally, the switch connects the load to the primary power source. If the primary power source fails, the switch will automatically detect the failure and switch the load to the secondary power source, such as generator power. This ensures that the load continues to receive power without interruption.