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ACmaxx / i-maxx
• Safety certifications: UL, CSA and VDE 0805 / EN60950.
VDE 0700 / EN60335 on request.
• Our fans have the CE mark of conformity.
• EMC protection:
> EN61000-4-4 Level 1 (1 kV or 2 kV)B
> EN61000-4-2 Level 8 kV/15 kV or 4 kV/8 kV
> EN55022 Class B
AC fans are extremely common and are used in a wide variety of applica-
tions. In control cabinet cooling, beer coolers, cooling cabinets, wood-bur-
ning stoves, medical devices – all have different requirements for resi-
stance to ambient influences. ACmaxx and i-maxx fans offer the same
features for protection against moisture, splash water and rough ambient
Particular design features of the i-maxx (ACi 4400):
i-maxx is more compact!
As large as existing AC fans – and not a bit larger. This is the most out-
standing feature of the new i-maxx ACi 4400. Even in the hub area, the
fan does not differ from typical 119x119x38 mm AC fans. Out with the
AC, in with the i-maxx ACi 4400 – it's that simple.
i-maxx is more efficient!
ACmaxx saves energy, and the i-maxx generation saves even more. While
an AC fan at 50 Hz can barely reach an overall efficiency of 5-6%, the
ACmaxx makes it to approx. 20-25%. With the new i-maxx ACi 4400, a
remarkable level of up to 30% is reached. This is the result of the optimi-
sation of the entire package made up of drive, electronics, AC/DC conver-
sion and aerodynamics. Thus the new i-maxx series boasts energy savings
of almost 75% compared to the corresponding AC fan, thus providing signi-
ficantly higher savings than the 40% level of the old AC 4300 generation.
AC 4000 N
i-maxx is quieter!
The i-maxx ACi 4400 is quieter! Quieter than AC fans and quieter than the
existing ACmaxx generation. The reason for this is the optimised aerody-
namics and the drive, which is optimised for minimum structure-borne
noise. Thus the fan is only half as loud at comparable air performance,
and is up to 6 dB(A) quieter at some operating points.
Speed independent of voltage and frequency
For the i-maxx ACi 4400, the speed, and thus the air flow and operating
noise, are independent of the supply voltage and power frequency.
Versions are available for 115 VAC with a voltage range from 85 to 132
VAC and 230 VAC with a voltage range of 195 to 265 VAC. Voltage fluctua-
tions and frequency differences in the power system are compensated for
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