Rocksolar 3.75HP 60-450V Solar DC Water Transfer Pump Kit
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Description
Description
ROCKSOLAR 3.75HP Solar DC Brushless Water Transfer Pump Kit
What's included:
- 1 × 3.75HP 60–450V DC brushless water transfer pump + MPPT controller
- 10 × 440W rigid monocrystalline bifacial solar panels (4,400W array)
- 10 ft 10 AWG PV cable
- 1 × 2-string waterproof DC disconnect box with 1000V 40A circuit breaker
- Mounting brackets for solar panels (optional)
- Ground or roof mount rack (optional)
- User manuals + warranty card
Key specs:
- Motor: 3.75HP DC brushless | Rated power: 2,800W
- Input: 60–450V DC (optimal range: 300–380V)
- Max flow rate: 268 GPM (at minimum head) | Max head: 82 ft
- Outlet: 3" diameter
- Solar array: 10 × 440W bifacial panels (4,400W)
Built for: Large farms, commercial irrigation, large livestock operations, municipal water transfer, ponds and water features, high-volume off-grid water supply
Key features:
- 268 GPM max flow — highest in the DC transfer pump lineup by a wide margin, moves large volumes fast
- 2,800W brushless motor with wide 60–450V input (optimal 300–380V) = designed for large multi-panel string configurations
- 3" inlet/outlet — commercial-grade plumbing connections for high-volume throughput
- MPPT controller — auto-adjusts to available sunlight, stops and restarts without intervention
- Float switch / pressure switch compatible — automates fill/shutoff for large tanks and troughs
- Dry-run auto protection — shuts off if water supply is interrupted
- Customers report significant reductions in fuel and maintenance costs vs. diesel pump alternatives
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 with its intake pipeline from the well, pond, cistern, stream, river 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.
Shipping & Rerturns
Shipping & Rerturns
- Shipping: Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days depending on your location.
- Returns: You may return or exchange products within 30 days of receiving your order. Items must be in original condition with proof of purchase.
- If your item is defective or damaged due to manufacturing issues, we’ll gladly replace it at no additional cost.
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Talk to Our Solar Experts
Have questions about this system? Our solar specialists are here to help you choose the right setup for your needs. Whether you need sizing guidance, installation support, or bulk pricing, we're ready to assist.