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Basic parameter for domestic fan selection

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KSB 250

KSB 250

Compact inline sound- and heat-insulated centrifugal fan with back-curved impeller blades. Maximum capacity - 1315 m3/h.

Voltage / frequency:

OK

Products in this series  (7)

  • SR series (round)

    SR series (round)

  • FB series (round)

    FB series (round)

  • KOM series

    KOM series

  • NKV series (round)

    NKV series (round)

  • NK series (round)

    NK series (round)

  • Speed controller RS-1-300

    Speed controller RS-1-300

  • Single phase speed controller RSA5E-2-P

    Single phase speed controller RSA5E-2-P

  • Speed controller RS-1-400

    Speed controller RS-1-400

  • Single phase speed controller RSA5E-…M

    Single phase speed controller RSA5E-…M

  • FBK series (round)

    FBK series (round)

  • Speed controller RS-…N (V)

    Speed controller RS-…N (V)


ParameterValueUnit
Phase
1
˜
Voltage
220-240
V
Frequency
50 / 60
Hz
Current
0.87  /  1.04
A
Power consumption
198  /  238
W
Maximum air capacity
1300  /  1315
765,7  /  774,535
361,4  /  365,57
0,3614  /  0,36557
21710  /  21960,5
m³/h
CFM
l/s
m³/s
l/m
RPM
2420  /  2730
min -1
Noise level at 3 m
41  /  43
[dBA]
Maximum transported air temperature
-25 +55
оC
Protection rating
IP X4
class
Weight
12.5
kg
Spigot size
250
mm
SEC Class
-
KSB 250
SizesØDB1HBLL1L2
mm249368287432588506480

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Sound-power level   Octave-frequency band [Hz]
  Hz   General   63   125   250   500   1000   2000   4000   8000
LwA to inlet   dBA 59 44 45 54 51 47 45 45 38
LwA to outlet dBA 74 51 51 62 70 67 64 61 55
LwA to environment dBA 46 33 36 41 42 30 26 23 27