Regular price $1,875.00 $1,375.00 Sale

SunRotor Solar Products
SR-4 Helical Rotor Submersible Solar Pump
with SRC-M50T Controller

The new SunRotor Helical Rotor Submersible Solar Pumps allows for maximum functional lift capability of up to 425 feet. Powered by solar, battery, or a combination of the two, maximum flow at 100 feet can be up to 15.1 gallons/minute. The submersible motor is protected from ambient water by an oil-filled jacket (utilizing food-grade oil that protects the potable water source if vessel is compromised). These submersible water pumps offer a broad range of pumping capabilities with greater water pumping depths and higher volumes of water. These pumps must be used with the SunRotor Controller, in order to avoid pump failure, and void the pump warranty. 5 Year Warranty in US, 2 Year Warranty outside the US.

Kit Includes: Pump, Controller, Low Water Sensor, Check Valve Assembly, and Wire Splice Kit.



  • Livestock watering
  • Water for remote areas
  • Irrigation



  • Nominal 24 volt operation
  • Usable voltage range 12 - 24
  • Power range 195 watts to 390 watts
  • Powered by solar, battery or a combination of the two
  • Maximum functional lift capability of 150 ft (46 m)
  • Max flow at 100 ft (30 m) is 3.9 gallons/min (14.76 liters/ min) with 202.5 watts and 38.2 volts PV input
  • Highly reliable, single moving part progressive cavity technology
  • Readily repairable in the field
  • 3/4 inch FNPT output
  • Designed for submersible operation up to 100 ft (submersion limit of 100 ft below static water level - ie. 100 ft submersion + 50 ft static water level = 150ft)
  • 3" diameter (76 mm) fits 3.5" (89 mm) casing; 19" in height (48.3 cm)
  • Light weight - 12 pounds (5.4 kg)
  • Submersible motor protected from ambient water by oil filled jacket (food grade oil protects potable water source if vessel is compromised)
  • Brushless DC motor technology avoids conventional DC brush maintenance and replacement
  • All electronics are mounted above ground for longer life and easy access
  • Entire pump body is stainless steel to comply with all local code and pump installation requirements
  • CE Certified and ISO 9001



  • State of the art controller electronics contained in NEMA standard (weatherproof) conduit connection box
  • Clear cover allows visible inspection of connections and of LED status lights
  • MPPT and current booster technology incorporated - converting excess voltage into amperage
  • Wide operational range with max input voltage tolerance of 50 volts (DC)
  • Battery or solar capabilities with low voltage cutoff for battery protection
  • Wired for low water cutoff and for tank-full float cutoff switches
  • Fully adjustable speed control is easily accessed through a hinged, snap hasp cover
  • Housed in a highly durable metal box with cooling fins cast in the back
  • Designed to be attached to same mounting pole as solar panels - minimizing lengths and gauge sizes of wiring harness to connect solar panels to controller