SPDT Contura Dimmer Switch ON /OFF/ ON . For use with dimmer controllers. Contura switches are rated to IP66, high-pressure wash resistant. Recommended for replacements in waterproof electrical panels with rocker switches to ensure waterproof integrity. The black and gray switches and covers are interchangeable with similar switches used as original equipment on many common boat types. Features Nominal voltage 12V/24V DC. Rated for 20A at 12V DC, 15A at 24V DC. 1/4 inches blade terminals. Snap-in mounting to fit panel hole 1. 45 inches x. 83 inches into panels. 093 inches to. 187 inches thick. Same as Cole Hersee part number 58332-24. SPDT Contura Dimmer Switch ON /OFF/ ON . For use with dimmer controllers. Contura switches are ra ted to IP66, high-pressure wash resistant. Recommended for replacements in waterproof electrical pan els with rocker switches to ensure waterproof integrity. The black and gray switches and covers are