ROCKSOLAR 4.0HP Solar-Powered Submersible Pump Kit What&';s included: 1 x 4.0HP 60-450V DC brushless submersible pump + built-in controller 10 x 445W bifacial solar panels (4,445W array) 10 ft 10 AWG MC4 extension cable (1 pair red + black) 1 x 2 String Waterproof PV Combiner Box with 32A 500V Circuit Breaker and surge protector User manual Key specs - all models: Motor: 4.0HP DC brushless | Water-cooled | Permanent magnetic | Built-in controller Input: 60-450V DC | Solar: 10 x 445W bifacial panels included (4,445W) Material: SS304 stainless steel | Pump body: 4" | Outlet: 2" (all models) Works in cloudy conditions Four kit models - choose by flow vs. depth priority: Model A (4SPW1-26P) Model C (4SPW3-13P) Model E (4SPW6-8P) Model G (4SPW12-5P) Max flow 16.9 GPM 33.90 GPM 62.96 GPM 117.56 GPM Max head 1,050 ft 734.91 ft 442.91 ft 229.66 ft Max pressure 464 PSI 318 PSI 192 PSI 99.5 PSI Pump body 4" 4" 4" 4" Outlet 2" 2" 2" 2" Built for: Extremely deep commercial and municipal wells, large-scale agricultural and commercial irrigation, remote industrial applications, greenhouse and large farm water supply, properties with wells exceeding 500 ft Key features: 4,445W solar array included - ten 445W bifacial panels, precisely matched to the pump&';s 4,445W+ requirement Model A reaches 1,050 ft - the deepest head of any pump on the ROCKSOLAR site Model G delivers 117.56 GPM - the highest flow of any pump ROCKSOLAR offers Works in cloudy conditions - customers confirm consistent performance even in overcast weather Proven for continuous heavy use - customers confirm reliable operation 6 days/week for greenhouse, livestock, and large irrigation Built-in controller - customers confirm straightforward setup despite the scale Dry-run auto protection - shuts off if well level drops Float switch / pressure switch compatible 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.