Waterboy 3HR300 0.50kW Submersible Helical Rotor Solar Bore Pump Complete Kit with x3 140W Solar Panels 

The WaterBoy 3HR300 is a robust and versatile mid-range solar pumping system, delivering higher lift capacity and daily water output than the entry-level 3HR200 model. Designed for small to medium-scale applications such as stock watering, tank filling, and remote off-grid water supply, the 3HR300 is ideal for installations requiring a reliable flow from bores or dams with a total dynamic head (TDH) up to 50 metres. Supplied as a complete solar pump kit, it includes everything needed for fast and simple DIY installation—no electrician, app, or grid connection required.

Featuring a highly efficient 3” stainless steel helical rotor pump with brushless DC motor, MPPT controller, and integrated soft-start and protection features, this system delivers up to 9,360 litres per day using solar power alone. Whether you're replacing an old windmill or upgrading an AC pump on your property, the 3HR300 provides a silent, self-sufficient solution built to last in harsh Australian conditions.

APPLICATIONS

• Livestock water supply on small to medium grazing operations
• Tank filling for rural homes and sheds
• Irrigating gardens, orchards, or small paddocks
• Domestic off-grid bore extraction
• Bore or dam water transfer with solar-only operation

FEATURES

• Efficient brushless DC motor for extended service life
• Integrated MPPT controller maximises solar output
• Built-in dry run protection using low water probe
• Adjustable speed and restart timer to match bore recharge rates
• Durable stainless steel pump and motor assembly
• Designed and supported by an Australian team with 35+ years' experience
• No apps or complex electronics—true plug-and-play functionality

PUMP PERFORMANCE

CONTROL BOX FEATURES

• MPPT solar controller with automatic voltage regulation
• Soft-start technology for pump longevity
• Speed control dial (0–10) for adjusting pump performance
• Timer dial (0–30 mins) to delay restart after low water shutoff
• LED indicators for system status, pump operation, MPPT activity, and errors
• Terminals for low water sensor (NC) and tank full/pressure switch (NO)
• Compatible with WaterBoy float switch and pressure switch accessories

INCLUSIONS

• 3HR300 Submersible Pump, Motor, and Integrated Controller
• x3 140W Mono Crystalline Solar Panels (Total 420W)
• Heavy Duty Cyclone-Rated Pole Mount Solar Frame
• 35m Power Cable with Stainless Steel Safety Cable
• Bore Cap (or optional floating dam kit)
• Low Water Probe (bore kit only)
• User Installation Manual
• 4-Year Warranty on Complete System

OPTIONAL ACCESSORIES (SOLD SEPARATELY)

• 6101 – Tank Float Switch with 20m Cable
• 6045NO – Pressure Switch with 12 bar rating, gauge, and fittings
• 6112 – 1.5” Double Acting Float Valve (for use with pressure switch)
• 6013 – 3” HR Sacrificial Anode for mineral-rich or corrosive water

EXCLUSIONS

• Poly pipe and plumbing fittings
• Concrete footings or trenching materials
• Any installation labour or electrical work
• Additional cable lengths (can be added as needed)

FREIGHT

• Packed in 1x crate: 175 x 55 x 65cm @ 135kg
• Nationwide delivery available (Part No. XFREX1)
• Shipping cost: $300+GST

WARRANTY

• 4-Year back-to-base warranty on complete system
• Less than 1.5% historical warranty return rate
• Technical support available via BW Solar Australia
• Installation manual and wiring diagrams included