Rocksolar 0.4HP Solar-Powered Submersible Pump Kit

ROCKSOLAR 0.4HP Solar-Powered Submersible Pump Kit

What's included:

• 1 × 0.4HP 20–48V DC brushless submersible pump + MPPT controller
• 1 × 440W rigid monocrystalline bifacial solar panel
• 10 ft 10 AWG PV cable
• 1 × 2-string waterproof DC disconnect box with 1000V 40A circuit breaker
• Mounting brackets for solar panel (optional)
• User manuals + warranty card

Key specs — all models:

• Motor: 0.4HP DC brushless | Water-cooled | Permanent magnetic
• Input: 20–48V DC | Solar: 1 × 440W bifacial panel included
• Material: SS304 stainless steel | Pump type: impeller (centrifugal)
• Works in cloudy conditions; battery can be added for extended operation

Two kit models — choose by flow vs. depth priority:

Built for: Wells, cisterns, ponds, livestock watering, off-grid irrigation, remote cabins, vegetable gardens, sustainable homesteads

Key features:

• Submersible design — drops directly into wells or cisterns, no priming required
• SS304 stainless steel — corrosion-resistant, built for permanent submersion
• MPPT controller — auto-adjusts to sunlight, stops and restarts without manual intervention
• Works in cloudy conditions — controller manages partial power efficiently
• Float switch / pressure switch compatible — automates fill and shutoff
• Dry-run auto protection — shuts off if water supply is interrupted
• Battery-addable — extend runtime beyond daylight hours
• Maintenance-free sealed design

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:

1. Solar panels convert sunlight into direct current (DC) electricity.
2. The solar pump controller continuously monitors the available solar power and adjusts the voltage and current to maximize energy harvest from the solar array.
3. The controller supplies optimized DC power to the brushless submersible pump, ensuring efficient operation under varying sunlight conditions.
4. The pump draws water from the well, pond, cistern, or other approved water source and delivers it through the discharge pipeline.
5. 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.
6. 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.
7. 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.