4" Hybrid AC/DC Solar Submersible Pump (3000W)
Model: 4DFSW18-137-300-3000-A/D
This premium hybrid AC/DC solar submersible pump features a Permanent Magnet Frequency Conversion motor. Designed with a Resin & Water Encapsulated system and a double-shielded structure, it ensures zero pollution risk to drinking water. With a massive maximum submerging depth of 150m, it is the ultimate solution for deep-bore water extraction, irrigation, and livestock watering.
Key Product Features
Advanced Pump Construction
100% Stainless Steel: Entirely constructed from 304 Stainless Steel for maximum corrosion resistance.
Water-Lubricated System: Features a water-filling lubricated rotor with high-precision top/bottom graphite bearings and thrust bearings.
Durability: Double outer and inner shielding structure with internal coils made from high-temperature tolerant copper wire.
Intelligent Protection: Built-in water shortage protection—the pump stops automatically when the well is dry and restarts after 15–30 minutes once water levels recover.
High-Efficiency Smart Controller
Hybrid Power Management: Seamlessly works with both DC Solar Power and AC Electricity. The controller features Auto-Switching capability to ensure constant operation.
Superior Waterproofing: Rated IP65 with a double-seal effect to prevent leaks and environmental damage.
Soft Start Technology: Eliminates impulse current during startup, significantly extending the motor’s lifespan.
Full Safety Suite: Integrated protection against High Voltage, Low Voltage, Over-Current, and High Temperature.
Technical Specifications
Parameter | Specifications |
Model | 4DFSW18-137-300-3000-A/D |
Rated Power | 3000W / 4HP |
Max. Flow Rate | 18,000 L/H (300 L/min) |
Max. Head | 137 m |
Max. Submerging Depth | 150 m |
Max. Water Temp | 35°C |
Max. DC Open Circuit Voltage | 420V |
AC Input Voltage Range | 85V - 280V |
Cable Length | 2 m |
Package Information
What’s Included (Everything to get you started):
1 x DIfful 4" DC Stainless Steel Solar Pump (Water-cooled Motor)
1 x DIfful AC/DC Hybrid Pump Controller
1 x High-Level Sensor (for water tank)
1 x Pump Outlet Joint Connector
1 x Splice Kit (for cable joining)
1 x Splice Kit (for waterproofing)
What You Need to Provide (Not Included):
Safety Cable: Stainless steel wires to secure the pump in the bore.
Piping: Poly pipes to transport water from the pump to the tank.
Solar Panels: Please contact us for a custom configuration if you are unsure of the wattage required.
Power Cable: 3-core cable with earth (recommend a size thicker than the original pump cable).
Shipping & Warranty Policies
2-Year Warranty: Full peace of mind with a comprehensive 2-year manufacturer warranty.
About Difful
Since 1989, Difful has been a technology leader in solar pump innovation. With hundreds of thousands of units in use worldwide, we utilize high-precision, fully automated manufacturing to ensure every pump meets our rigorous standards for quality and efficiency.
