Important Notice for Our Valued Customers


While many small wind turbines are widely offered on the market, some are advertised with unrealistic power ratings of 3000–4000 Watts—often at extremely low prices. Please be aware that such claims do not reflect actual performance under real-world wind conditions.


To avoid disappointment, we strongly advise you to carefully review the product specifications and ensure that the system you are considering truly meets your energy needs. Making an informed and responsible choice is essential for investing in a reliable, efficient, and long-lasting wind power solution.




 Please click for performance chart


  • Universal application for low, middle and high wind
  • 3-phase permanent magnets (High efficiency due to strong permanent magnets (NdFeB magnets, 150 ° temperature resistant)
  • Aerodynamic design
  • Powder coated aluminum housing
  • Low noise
  • UV-resistant Plastic + 30% glass fibers blades, successfully tested
  • Power transmission through slip ring, thereby no twisting of the cable possible
  • Durable and low maintenance        


 Technical Drawing -->

Details for Heli 4.0 Ongrid
Ampere 20a
Rated Power 3800W
Nominal Voltage 350VAC
Work Space 120 – 440 Rpm (Low Rpm Wind Turbine)
Speed Range 0-600 Rpm
Max Performance 7400W
Efficiency 92%
Casing GRP Hand Laminated
Automatic Storm Securing 13 m/s (by tilting the rotor)
Details for Heli 4.0 48V Offgrid
Ampere 80a
Rated Power 3800W
Rated Voltage 48V
Generator 3-phase three-phase current permanent magnet (high efficiency due to strong permanent magnets (NdFeBo - magnets, 150 ° temperature resistant)
Max Performance 7400W
Loading Range 0-600 Rpm
Automatic Storm Securing 13 m/s (by tilting the rotor)
Blade Specifications
Material GRP (hand laminated)
Noise 40 dB
Rotor Diameter 300 Cm
Weight 2900 Gr (per blade)

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Heli 4.0 Wind Turbine

  • Brand: ISTABREEZE
  • Product Code: HELI4ON-HELI4OFF
  • Availability: 999

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