– Possible special versions:
(See chapter DC fans - specials)
- Speed signal
- Moisture protection
Max. 4.6 m
3
/h
– Material: Housing: GRP
1)
(PBT)
Impeller: GRP
1)
(PA)
– Direction of air flow: Exhaust over struts
– Direction of rotation: Counterclockwise,
looking towards rotor
– Connection: Via single wires AWG 28,
TR 64
– Weight: 5 g
1) Fiberglass-reinforced plastic
Type m
3
/h cfm VDC VDC dB(A) Bel(A) / Watts rpm
-1
°C Hours Hours
255 M 2.3 1.2 5 4.5...5.5 5 < 3 0.2 6 500 -10...+70 45 000 / 17 500 47 500 ¿
255 N 3.5 1.9 5 4.5...5.5 16 < 3 0.4 9 600 -10...+70 40 000 / 15 000 42 500 ¡
255 H 4.6 2.6 5 4.5...5.5 23 4.4 0.6 12 000 -10...+55 35 000 / 15 000* 37 500 ¬
252 N 3.4 1.9 12 10...14 15 < 3 0.5 9 000 -10...+70 40 000 / 15 000 42 500 ¡
252 H 4.6 2.6 12 10...14 23 4.4 0.7 12 000 -10...+55 35 000 / 15 000* 37 500 ¬
Subject to change
Nominal voltage
Air flow
Air flow
Voltage range
Sound pressure level
Sound power level
Sintec sleeve bearings
Ball bearings
Power consumption
Nominal speed
Temperature range
Service life L
10
(20 °C)
ebm-papst standard
Service life L
10
(60 °C)
ebm-papst standard
Life expectancy L
10IPC
(40 °C) see page 17
Curve
31
Finger guards
from p. 242
2016-01
Air performance measured as per: ISO 5801.
Installation category A, without accidental contact.
Noise: Total sound power level L
W
A ISO 103002
measured on a hemisphere with a radius of 2 m.
Sound pressure level L
p
A measured at 1 m distance
from fan axis.
The values given are applicable only under the specified
measuring conditions and may differ depending on the
installation conditions.
In the event of deviation from the standard configuration,
the parameters must be checked after installation!
For detailed information see
http://www.ebmpapst.com/general conditions
* at 55 °C
Tin-plated
Information
DC axial fansDC fans - specials
ACmaxx / EC fans
AC axial fans
Accessories
Representatives
DC centrifugal fansAC centrifugal fans
DC axial fans
25 x 8 mm
Series 250
Nominal data
