Attwood - 3-Way Auto/Off/Manual Bilge Pump Switch - 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 - 2-13/16" x 1-7/8". Hole size - 1-1/2" x 7/8". Caution: Bilge pump switches are not external ignition protected.. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.