ROCKSOLAR 1.61HP Solar-Powered Submersible Pump Kit What&';s included: 1 x 1.61HP 80-150 V DC brushless submersible pump + built-in controller 4 x 445 W rigid monocrystalline bifacial solar panels (1,780 W array) 2 x 10 ft 10 AWG PV cable 1 x 2 String Waterproof PV Combiner Box with 32 A 500 V Circuit Breaker and surge protector 4 x Z-bracket solar panel mounting sets (optional) Ground or roof mount rack (optional) User manuals + warranty card Key specs - all models: Motor: 1.61HP DC brushless | Water-cooled | Permanent magnetic | Built-in controller Input: 80-150 V DC | Solar: 4 x 445 W bifacial panels included (1,780 W) Material: SS304 stainless steel | Pump type: impeller (centrifugal) Works in cloudy conditions | Battery-addable for extended operation Four kit models - choose by flow vs. depth priority: Model A (3SPN1-14P) Model D (4SPN3-8P) Model E (4SPN4-4P) Model F (4SPN6-4P) Max flow 17.42 GPM 25.74 GPM 39 GPM 46.8 GPM Max head 391.2 ft 299.92 ft 198.86 ft 169.52 ft Max pressure 169.2 PSI 129 PSI 86 PSI 73.3 PSI Pump body 3" 4" 4" 4" Outlet 1.5" 2" 2" 2" Built for: Very deep residential and farm wells, off-grid homesteads, remote properties, livestock watering, farm and greenhouse irrigation Key features: 1,780 W solar array included - four 445 W bifacial panels, exceeding the 1,780 W+ minimum for reliable operation Deepest head in the kit lineup - Model A reaches 391.2 ft, the deepest in the entire submersible range Four model options - more choice than any other submersible kit, covering everything from deep narrow wells to high-volume shallow applications Built-in controller - no separate controller needed; quiet, simple operation Works in cloudy conditions - customers confirm reliable performance even on overcast days Battery-addable - extend operation beyond daylight hours Proven for livestock and off-grid use - customers confirm tanks stay full daily with zero grid dependency Dry-run auto protection - shuts off if well level drops, protecting the motor Warranty: 5 years How the System Works The ROCKSOLAR Solar Powered Water Pump System converts solar energy into a reliable water supply for livestock watering, irrigation, and remote agricultural applications. The operating sequence is as follows: Solar panels convert sunlight into direct current (DC) electricity. The solar pump controller continuously monitors the available solar power and adjusts the voltage and current to maximize energy harvest from the solar array. The controller supplies optimized DC power to the brushless submersible pump, ensuring efficient operation under varying sunlight conditions. The pump draws water from the well, pond, cistern, or other approved water source and delivers it through the discharge pipeline. Depending on the application: Livestock Watering: Water is pumped into a storage tank or watering trough. When an optional float switch is installed, the controller automatically stops the pump once the tank reaches the preset water level and restarts pumping when the water level drops. Agricultural Irrigation: Water is supplied to irrigation systems such as drip irrigation, sprinkler systems, soaker hoses, or storage reservoirs for crop, orchard, greenhouse, vineyard, pasture, and garden irrigation. Flow can be controlled using irrigation valves, timers, or storage tanks based on the specific irrigation design. During periods of insufficient sunlight, such as early morning, late evening, or heavy cloud cover, the controller automatically reduces pump speed or stops the pump to protect the system and optimize energy use. When adequate sunlight returns, the controller automatically restarts the pump without requiring manual intervention. This intelligent, fully automatic operation minimizes maintenance while providing a dependable and sustainable water supply for livestock, irrigation, and other off-grid agricultural applications.