Switch is 3 pos 2 pole, with center = off. Formerly was switching 30a circuits, one from power supply unit and other from 12vdc battery. Now switching 3a control wire to 12vdc relay -- same switch, just using one pole and 2 positions, center and up. Who knows what the lower position might be good for -- maybe another relay to connect from a different set of batteries? Time will tell.

n5rtg Jim