
Whatever the type of transfer switch, they all operate the same way. Transfer switches allow the generator to operate without the threat of the electricity back feeding into the utility lines. They do this by separating the emergency circuits from the utility line during a power outage.
Different specific types of transfer switches are a “break before make” transfer switch, a “closed transition” transfer switch, and a “soft-loading” transfer switch. The difference between these is essentially in how they manage the transfer of power.
It's easy - make the switch and learn more about transfer switches by reading the articles below.