Controllers
Smart Solar Pump Controllers for Safer, Smoother Performance
SunRotor controllers are designed to manage and protect your solar pumping system. They regulate voltage, monitor pump performance, and help prevent dry-run damage or power overloads. Whether you’re running a shallow well or a deep remote setup, a controller is your best line of defense for pump longevity and safe operation. Easy to install and simple to understand, our controllers keep your water flowing with confidence.
Sunrotor Controllers
SRC-M50T Controller
SKU: SRC-M50T
MSRP $900.00
The SunRotor SRC-M50T 24V DC Input Controller is specifically designed to operate our pumping systems. The controller box is weatherproof and designed to be attached to the same mounting pole as your solar panels. This minimizes the lengths and gauge sizes of the wiring harness to connect the solar panels to the controller.
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State-of-the-art controller electronics contained in a NEMA standard conduit connection box
Clear cover allows visible inspection of connections and LED status lights
MPPT and current boost technology incorporated
Wide operational range with max input Voc 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 on the back
Dimensions: 12" (30.5 cm) x 4.5" (11.4 cm) x 8" (20.3 cm)
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SRC-M100T Controller
SKU: SRC-M100T
MSRP $950.00
The SunRotor SRC-M100T 48V DC Input Controller is specifically designed to operate our 48V solar pump models. The controller box is weatherproof and designed to be attached to the same mounting pole as your solar panels. This minimizes the lengths and gauge sizes of the wiring harness to connect the solar panels to the controller.
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State-of-the-art controller electronics contained in NEMA standard conduit connection box
Clear cover allows visible inspection of connections and of LED status lights
MPPT and current booster technology incorporated
Wide operational range with max input voltage tolerance of 100 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
Dimensions: 12" (30.5 cm) x 4.5" (11.4 cm) x 8" (20.3 cm)
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SRC-M200T Controller
SKU: SRC-M200T
MSRP $1,050.00
The SunRotor SRC-M200T 72V DC Input Controller is specifically designed to operate our 72V solar pump models. The controller box is weatherproof and designed to be attached to the same mounting pole as your solar panels. This minimizes the lengths and gauge sizes of the wiring harness to connect the solar panels to the controller.
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State-of-the-art controller electronics contained in a NEMA standard weather-resistant enclosure
Clear cover allows visible inspection of connections and LED status lights
Integral MPPT and current booster technology
Wide operational range with max input voltage tolerance of 200 volts (DC)
Battery or solar capabilities with low-voltage cutoff for battery protection
Features low water cutoff and tank-full float switch input wiring terminals
Variable timer control on low-water circuit
Adjustable speed control
Hinged enclosure door for easy accessibility to wiring terminals and controls
Dimensions: 12" (30.5 cm) x 4.5" (11.4 cm) x 8" (20.3 cm)
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SR-xr 3 Controller
MSRP Starting at $3,900
The SunRotor SR-XR Solar Inverter is designed to operate submersible, surface and swimming pool pumps using solar PV or AC power. Featuring automatic operation, advanced maximum power point tracking and built-in motor protection, the SR-XR provides efficient power management for a variety of water pumping applications. Its IP65-rated enclosure is designed for demanding outdoor environments.
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SKU: 37K3P-LV3 — $3,900
SKU: 55K3P-LV3 — $4,300
SKU: 55K3P-HV3 — $4,300
SKU: 75K3P-HV3 — $5,400
SKU: 110K3P-HV3 — $7,200 -
Compatible with single-phase and three-phase induction motors
Patented dynamic VI maximum power point tracking (MPPT) with 99% tracking efficiency
Rated power: 2.2–11 kW across the SR-XR product series
Dual solar PV and AC power inputs with solar priority
Hybrid power blending supports extended operation when sufficient solar or AC power is available
Automatic operation with adjustable pump frequency
Soft-start functionality and motor protection
Optional water level switch for overflow and dry-run protection
Software-based anti-dry-run protection without a water level switch
IP65 protection rating
Forced-air cooling
Optional wireless communication and remote monitoring
Optional pressure and water level detection controls
Prorated 5-year warranty
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SR-xr 4 Solar Inverter
MSRP Starting at $2,000
The SunRotor SR-XR Solar Inverter is designed to operate submersible, surface and swimming pool pumps using solar PV or AC power. Featuring automatic operation, advanced maximum power point tracking and built-in motor protection, the SR-XR provides efficient power management for a variety of water pumping applications. Its IP65-rated enclosure is designed for demanding outdoor environments.
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SKU: 22K1P-LV4 — $2,000
SKU: 22K3P-LV4 — $2,650
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Compatible with single-phase and three-phase induction motors
Patented dynamic VI maximum power point tracking (MPPT) with 99% tracking efficiency
Rated power: 2.2–11 kW across the SR-XR product series
Dual solar PV and AC power inputs with solar priority
Hybrid power blending supports extended operation when sufficient solar or AC power is available
Automatic operation with adjustable pump frequency
Soft-start functionality and motor protection
Optional water level switch for overflow and dry-run protection
Software-based anti-dry-run protection without a water level switch
IP65 protection rating
Forced-air cooling
Optional wireless communication and remote monitoring
Optional pressure and water level detection controls
Prorated 5-year warranty
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Pumps You Can Count On
SunRotor pumps are made to keep water flowing year after year. Whether you’re helping a customer or managing your own property, reliability matters.