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VENTS TT Silent-MD 450-3 EC

Inline mixed-flow fans in sound and heat-insulated casing. Maximum capacity - 8920 m3/h.

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  • Characteristics
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  • Additional diagrams
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  • New inline VENTS TT Silent-MD EC fans are enclosed in a specially designed sound-insulated casing that ensures low-noise operation combined with high aerodynamic characteristics.

  • The fans are compatible with Ø 355, 400, 450 air ducts. 

  • VENTS TT Silent-MD EC combine wide capabilities and high performance features of both axial and centrifugal fans, thus providing powerful air stream and high pressure. 

  • The fans are used as a component part of air handling systems for various commercial and industrial premises with high requirements to noise level, i.e. in libraries, conference halls, educational institutions, kindergartens, etc.

  • The fan casing is made of polymer-coated steel.

  • The inner casing perforation let sound waves pass through the holes and fall at a specific angle to the sound-absorbing layer.

  • The casing is internally heat- and sound-insulated with mineral wool.

  • The specially perforated casing and sound-absorbing material provide sound attenuation in a broad frequency band.

  • The conic impeller with special blade profiling increase air flow speed and provide higher pressure and air capacity as compared to standard axial fans. 

  • The diffuser, the specially profiled impeller and the directing vanes at outlet from the fan casing distribute air flow in such a way as to attain the best combination of high performance and high pressure at low noise level.
  • The fan casing is equipped with an airtight terminal box for connection to power mains.


  • High-efficient electronically commutated direct current motor. Such motors are the most stateof-the-art energy saving solution.

  • EC motors are featured with high performance and total speed controllable range. 

  • High efficiency reaching 90% is the premium advantage of the electronically-commutated motors.
  • The motors are equipped with ball bearings designed for at least 40 000 operating hours.
  • For precise features, safe operation and low noise, each impeller is dynamically balanced during assembly.
  • Motor ingress protection rating IP 44.
  • The fan is controlled with an external 0-10 V control signal. The fan capacity is regulated depending on temperature and pressure level, smoke content, etc.

  • The rotation speed of the EC motor changes proportionally to fluctuations of the control parameter and the fan delivers a required air volume to the ventilation system.

  • Maximum fan speed does not depend on the current frequency. The fan is compatible both with 50 or 60 Hz power mains.
  • The fans may be integrated into a unified data processing control system.
  • The specially designed software provides precise control of all the fans integrated into the system.
  • The computer displays all the system parameters. Each fan in the system may be individually adjusted.
  • The fan may be mounted at any place and at any angle within the ductwork system.
  • Several fans may be installed in one system in parallel to attain higher air capacity or in series to increase operating pressure in the system.
  • The fan casing is equipped with fixing brackets for fastening to the floor, wall.
Parameter TT Silent-MD 450-3 EC
Measurement unit
Phase 3 ˜
Voltage 380-480 V
Frequency 50/60 Hz
Sound pressure level at 3 m distance 57 dBА
Power 2100 W
Maximum air capacity 8920 m³/h
RPM 1900 min-1
Current 3.5 A
Max. transported air temperature 60 °С
Protection rating IP X4 -
Duct diameter 450 mm
EC motor yes -
Design centrifugal -
Sound- and heat-insulated casing yes -
Casing material polymer coated steel -
Duct for round air ducts -
Type supply and exhaust -
Mounting Inline -
Files archieve
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"VENTS TT Silent-MD EC" product description 02-2016 (pdf 156.48Kb)
Download high quality image "VENTS TT Silent-MD EC (ErP 2015, 2016, 2018)" (psd 3.74Mb)
Download image "VENTS TT Silent-MD EC (ErP 2015, 2016, 2018)" for your website (png 277.39Kb)
"TT-M, TT-MD, TT-MD EC, TT Silent-M, TT Silent-MD, TT Silent-MD EC" user's manual 06-2018 (V135EN-03) (pdf 3.41Mb)
VENTS  TT Silent-MD 450-3 EC
Parameter Value Measurement unit
∅D 447 mm
DK 705 mm
B 1300 mm
H 730 mm
Additional diagrams
Additional diagrams
ƞ, [%]   MC   EC   N   VSD   [kW]   [A]   [m3/h]   [Pа]   [RPM]   SR
44.1   А   Static   51.6   Yes   1.948   3.45   5514   515   1900   1



ErP data  
Overall efficiency η,[%]
Measurement category MC
Efficiency category EC
Efficiency grade N
Variable speed drive VSD
Power [kW]
Current [A]
Air flow [m3/h]
Static pressure [Pa]
Speed [n/min-1]
Specific ratio SR
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