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SMA WindyBoy 400VDC 3KW Rectifier & Over Voltage Protection Box

SMA WindyBoy 400VDC 3000Watt Rectifier and Over Voltage Protection Box


Optimal Protection for Small Wind Power Plants


Rectifier and over voltage protection – the Windy Boy Protection Box from SMA is multitalented: The WBP-Box limits excessive voltage and power from the generator and redirects it to a load resistor without limiting the power of your small wind energy plant. This reliably protects the inverter from high input voltages and ensures trouble-free operation.
The Windy Boy Protection Box is equipped with a three-phase rectifier. It is delivered as a turnkey unit and can be used with nearly all types of generators from various manufacturers and with different power classes. This makes the Windy Boy Protection Box the optimal solution for wind power plants, but also provides the perfect link between permanent magnet generators and the inverter.




  • Suitable for WB 1100 and WB 1700
  • Highly dynamic over voltage protection
  • Yield protection: Grid feeding even with excessive input voltage
  • Optional start up performance of the wind turbine
  • Three phase generator connection
  • High efficiency of the rectifier
  • Easy installation
  • Available in three different voltage ranges: 400V, 500V and 600V

Technical Specifications


Generator Connection
Number 1 x 3 phase
AC voltage 3 x 0 to 500Vac
AC current 3 x 0 to 11.5 Aac
Generator frequency 0 to 400 Hz
Rated power 1 to 2 Kw
Windy Boy Connection
Number 3
Voltage limitation 400 Vdc
Total output 3 Kw
Load Resistor Connection
Number 1
Nominal voltage 400 Vdc
Continuous power 3 Kw
Max efficiency > 99.95 %
Losses at continuous power 15 W
Ambient Conditions
Ambient temperature -25°C to +60°C
Enclosure rating IP 54
General Information
Rectifier Integrated
Dimensions 280W x 220H x 130D mm
Weight 5 Kg
Load resistor optional

This is an archive page for information purposes only.
  • Model: WBP Box400
  • Shipping Weight: 5kg
  • Manufacturer:

This product was added to our catalog on Wednesday 10 January, 2007.