3-Way Auto/Off/Manual Bilge Pump Switch Part #: 7615A3 Panel-mounted rocker switches for use with pump that draws 10 amps or less. Features: 1/4" spade terminals 6-volt through 32-volt D.C. only 10 amps maximum Plate is 2-13/16" x 1-7/8" Hole size is 1-1/2" x 7/8" Caution: Bilge pump switches are not external ignition protected.