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One of the most popular and best sold Ultra-Silent-Classic-Design fans since 2005. Constantly developed and enhanced.

<b>Award winning product:</b> received several awards by specialised press. <b>3-year-warranty:</b> 3-year warranty for enduser according to our warranty regulations <b>High quality product developed in Germany:</b> high quality and reliable product, developed in Germany, monitored production under German supervision. <b>High quality class:</b>: Superior quality compared to standard products. Established and reliable technology with german quality level. <b>Macrolon:</b> high quality synthetic material by Bayer with anti dust surface <b>NB Nano SLI Bearing:</b> Geräuscharmes Long Life Gleitlager mit Nanotechnologie Schmierung <b>NB EKA P1 Drive:</b> Pulsgeräuscharmer Qualitätsantrieb mit Autorestartfunktion, Motorschutz und Tachosignalleitung

quiet, reliable and affordable

  • developed in Germany
  • silent NB-NanoSLI® bearing NEW!
  • silent NB-EKA P2 Drive NEW!
  • Bayer® Makrolon® rotor with anti-dust technology
  • reinforced fibreglass PBT-frame
  • 50 cm cable with high-quality textile sheath
  • NB-slics for vibration-free assembly


  • 4 assembly screws (tool free assembly possible)


3 years warranty
Warranty Policy


Type Number of revolutions Connection Start/nominal voltage Volume Performance
XS-1 3000rpm 3 Pin 8.0 V / 12.0 V 16 dBA 12.0 m³
XS-2 4000rpm 3 Pin 8.0 V / 12.0 V 21 dBA 15.0 m³




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Data sheet

The product data sheet gives you detailed information about the fan.

NB-BlackSilentFan 50mm Data sheet