HRFD 250/4
Axial high-performance fan
Axial high-performance fan pipe sleeve
cylindrical, double flanges,
directly driven.
Cylindrical tube made of galvanized steel
sheet, enclosing with impeller, on both
sides Formed flange, hole
DIN 24155thTerminal with external
terminal box.
Impeller with 7 blades made of thermoplastic.
High efficiency, low operating
noise. Vibration-free operation through
Dynamic balancing to grade G 6.3
VDI 2060 and DIN ISO 1940. Can be used in
The range of -30 to +60 degrees C.
Three-phase squirrel-cage motor with
Voltage reduction speed controllable
Thermal contacts, closed design,
maintenance-free, sealed, low-noise
Ball bearing with long life oil.
Fan-data (default)

Vol.str. 0 Pa at 1040 m3 / h
Vol.str. Betr.pkt. m3 / h
Max pressure 44 Pa increase enlarge
Druckerh. Betriebspkt Pa
Funding density 1.2 kg/m3
Medium temperature 40 degC
Angle of 0 degrees
Operating time h
Speed ​​1410 1/min
aufgenomm.Leistung 0.055 kW
9.3 kg Weight
SoundPower 64 dB (A)

LWa sound power spectrum in dB (A)
Associated freq = frequency in Hz

Freq 250 500 1000 2000 4000 8000
LW 54 61 58 56 51 42

Voltage 400 Volt
Current consumption 0.2 Amp
AC / AC D
Frequency 50 Hz
B insulation
Degree of protection IP 55
Explosion protection N
Temperature class

Make: Helios
Item No:. 220
Type: HRFD 250/4 TK
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