Rule 20SA Automatic Submersible Marine Bilge Pump

The Rule 20SA Automatic Submersible Bilge Pump is an 800 GPH, 12V DC automatic bilge pump designed for removing water from a boat bilge. It uses electronic sensing for automatic on/off, is submersible and ignition‑protected, and features a compact body roughly 4.7 inches tall and 2.9 inches wide with a 3/4-inch discharge. It draws about 3.4 amps at 12V (4.3 amps at 13.6V) and includes a built‑in thermal cut‑off, hidden air vents to prevent air locks, and a check valve to minimize backflow. Three‑way wiring allows connection to a switch for manual override or an indicator light, and the unit’s internal circuitry cycles the pump on/off in response to detected water; replacement strainer 1232R is available if needed.