KD304A H.59
Physical Properties
design type axialfan
air supply 1800 m³/h
pressure pt 58 Pa
speed controllable yes
impeller axial
size 250 mm
Installation site
machine or wall
mounting Built-in fan and Built-on fan
air direction at order
reversible with restrictions
Thermokontakt possible
possible temperature at nominal current -20 °C bis 60 °C
air supplyNenn 1750 m³/h
rotation speedNenn 1400 U/min
Electrical Properties
  alternating current
voltage 230 V
frequency 50 Hz
other voltages 400V-50Hz, 480V- 60Hz, 500V-50Hz
Imax 0,65 A
protection class IP 44 to IP 54
other Protection classes IP x6
heat class F and H
star / delta connection no
Material properties
material steel ring
surface galvanized or powder-coated
impeller componend plastic
stainless steel (V2A , V4A) possible
offshore modell possible
Property- Tests
climate chamber test yes  (design test)
salt water test yes  (design test)
protection class test: IPx6 yes  (design test)

All details [ liability-free ]


Please get further data from the data sheet:
Axialfan KE304

The axial fan is also deliverable into high-grade steel and for the offshore use at a corresponding execution, see high-grade steel ventilators and offshore ventilators.

built-on ventilator
available from stock

built-in ventilator
available from stock

plate ventilator
available from 50 pieces



Description of KE304 axial fan

The KE304 type axial fan is the AC fan matching the KD304A axial fan in two-phase AC with 230Volt. Just like the KD304, this one runs very quietly. The fan with a nominal speed of 1400 rpm has a volume flow of 1800 m³/h and the fan has a diameter of 3000mm. The size corresponds to the size at 300mm.

The axial fan is suitable for various applications, such as cooling of small to medium rooms, containers, generators and machines. As a built-in axial fan, the fan can be used in walls of offices, containers in sandwich construction and similar areas. There it can be well used for cooling or fresh air supply.

Voltage and control of KE304 axial fan

By using our temperature controller, the AC axial fan can be used to regulate heat.

When the KE304 fan is used in combination with our air quality controller, it can improve the air quality and provide a better climate

Axial fans can be used very well for animal housing in organic farms.

The KE304 AC axial fan can be equipped with a thermal contact in the form of a bimetal switch. Thus, this switches off for protection when the temperature is too high.

The rated voltage is 230Volt, 50Hz, but voltages of 100Volt, 60Hz and in three-phase operation as KD304 of 480Volt, 60Hz (USA) and 575Volt, 60Hz (Canada) are also possible. Special voltages of 500Volt, 50Hz are also available.

Stainless steel versions of the KE304 axial fan

Fans in stainless steel design are used in the food industry. Therefore, we have developed our fans in the form of the stainless steel fans in V2A (material number 1.4301 or AISI 304 or X5CrNi189). The motors are made of high quality cast aluminum. These can be left raw for the food industry or painted with food color on request. Direct production from aluminum material approved for the food industry is conceivable, with annual purchase quantities.

For the area in salty air, like coastal area, drilling rigs (offshore area) the fans can be made of stainless steel V4A (material number 1.4571 or AISI 316 or X10CrNiMoTil810).

In addition, painting with salt water resistant paint is possible.

Material of the KE304 axial fan

The standard impellers are made of glass fiber reinforced plastic. For very high temperatures, the use of aluminum impellers is also possible.

The rectangular plate design as a plate fan is also available on request. For cost reasons, however, this is only advisable from a minimum order quantity to be specified in advance.

The protection class is IP44, also available is the protection class IP54 and the protection class IP56 for humid environments.

When ordering, the installation position should be specified, but this can also be changed later if the situation still changes on site.

Technical diagram of KE304 axial fan

Reversing the air direction (reversibility) is possible with the KE304 fan. Since the blades are profiled similar to aircraft profiles for better efficiency, in the reversed direction the air performance is reduced by about 15%.
Due to the use of specially developed motors for the fans of the company Kaiser Ventilatorenbau, they are particularly efficient and in accordance with DIN EN 60085, the design is manufactured in the thermal protection class F or H on request.
The permissible temperatures during storage of the fans and the operating conditions have been tested by means of type tests in climatic chambers. The stainless steel fans have been verified and proven via salt water tests for offshore use and an IPx6 humidity test.
The fan complies with the ERP 2015 Ecodesign Directive and has the CE mark.
The motors are energy efficient and the fans comply with ERP2015 (ErP Directive 2009/125/EC EU Regulation No. 327/2011).
The KE304 valve gate is controllable over the entire power range via a stepless speed controller. Automatic controllers for temperature and CO2 are also available.
The design of the three-phase motors can be controlled via speed controllers, transformers and frequency converters. In accordance with DIN-IEC/TS 60034-17, it should be noted that, depending on the frequency converter, an all-pole sinusoidal filter must be connected between the motor and the fan.
Blow-out protection grilles and weather protection dampers are available if required by the machine directive and the area of application.
For the design and construction process of our customers, we have created CAD data for 3D construction in STEP exchange format and these can be downloaded from the website under Service.

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