Power selector

I am designing a basic power supply selector. for my HNC course. What im doing is having three external power supplies being selected by a Touch screen. circuit controlled by a PIC18 Family. My power supplies need 24V to work, so therefore i will be switching the 24V through my controller. what i need to know is can i get a solid state relay (input 5v) to control the 24V to each pwr spply

5v wil be comming from my controller

is this workable

any feed back would be great