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Primus AIR Silent X


Primus 1-ARSM-15, AIR Silent X wind turbine for marine environments, 440 Watt, silent carbon-fibre blades, internal regulator, marine grade

The Primus AIR-series of small wind turbines has been around since 1995, with over 150,000 installed since! Theirs is a proven product, for a reasonable price.

The AIR Silent X is made with hand-laminated carbon-fibre blue blades, designed to be quiet, even at high wind speeds. This makes the AIR Silent X particularly suitable for use on a boat etc.

The AIR Silent-X produces best at medium to high wind speeds and can work in a marine (salt spray) environment. For a low-wind environment the AIR Breeze could be a better choice. Peak-power output is 440 Watt, and there are versions for 12/24/48 Volt battery-charging applications in coastal, desert or Arctic environments. It delivers the energy you need for communications, offshore structures, sailing or remote monitoring, to name a few. A small wind turbine can also be a great addition to an off-grid system, to provide energy during those dark (but windy) winter days. With a build-in charge controller, the AIR Silent-X provides energy quietly and efficiently. The AIR Silent X is corrosion resistant, covered in aircraft quality paint with a marine grade O-ring seal and stainless steel fasteners, ensuring durability in challenging conditions. These are the official type codes:

Primus 1-ARSM-15-12: 12 Volt AIR Silent X
Primus 1-ARSM-15-24: 24 Volt AIR Silent X
Primus 1-ARSM-15-48: 48 Volt AIR Silent X

The AIR Silent X includes a stop-switch.

Be sure to check out the Primus Webinars to learn more about installation, wind resources, turbine placement etc.


  • Stop-switch included!
  • 1.17 meter (46″) rotor diameter
  • 3.1 m/s (7 mph) startup wind speed
  • Marine-grade paint, stainless fasteners
  • Can produce 35 kWh/month at 5.8 m/s
  • Quiet hand-laminated carbon-fibre blades
  • Can withstand winds up to 49.2 m/s (110 mph)
  • Mounts on 1.5″ schedule 40 pipe, 48 mm (1.9″) outer diameter
  • Advanced microprocessor technology for superior performance
  • High wind protection without mechanical braking
  • Lightweight design is simple and easy-to-install
  • Permanent mold cast aluminum body
  • High-quality, field tested components
  • Warranty 5 years

Turbine Selection Matrix

Low to Moderate Wind Speeds High Wind Speeds Very High Wind Speeds
under 5.5 m/s (12 mph) average December wind speeds 5.5 – 7 m/s (12 – 15 mph) average December wind speeds Over 7 m/s (15 mph) average December wind speeds
Coastal Use AIR Breeze AIR X Marine, AIR Silent X AIR X Marine, AIR Silent X, with TriStar 45 and TL-100 diversion load
Inland Use AIR 40 AIR 30 AIR 30 with TriStar 45 and TL-100 diversion load

The marine-type turbines (AIR Breeze, AIR X Marine, and AIR Silent X) can of course also be used at inland sites. They are just a more corrosion-resistant version of the inland wind turbines.

AIR Turbine Power Curves

AIR Turbines Energy Curve



Mnfr. model

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Battery Voltage

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Rated output power

440 Watt @ 12.5 m/s (28 mph)

Startup wind speed

3.1 m/s (6.9 mph)

Rotor diameter

1.17 m (46")

Rotor swept area

1.07 m^2 (11.5 ft^2 )

Temperature range




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