Switches 3 - 120 or 230 Volt AC sources. Compact solution when circuit protection is provided elsewhere. Allows connecting one of two different AC sources to one circuit. Mounts in panels up to 0.16 inch (4.00mm) thick. Heavy duty industrial rated switch. Intuitive function - One hand operation. UL listed. Switches 120 or 230 Volt AC sources. 600 Volt AC max.