KD350A H.57
Physical Properties
design type axialfan
air supply 3000 m³/h
pressure pt 80 Pa
speed controllable yes
impeller axial
size 300 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 3000 m³/h
rotation speedNenn 1400 U/min
Electrical Properties
  Three-phase motor
voltage 400 V
frequency 50 Hz
other voltages 400V- 50Hz, 480 V -60 Hz, 575V- 60Hz
Imax 0,50 A
protection class IP 44 to IP 54
other Protection classes IP x6
heat class F and H
star / delta connection yes
Material properties
material steel ring
surface Galvanized or powder-coated
impeller komponend 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 MD354


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 MD354 axial fan

The MD354 axial fan is an efficient and quiet running fan with a diameter and size of 350mm. It has a voltage of 400Volt, a volume flow of 3000m³/h and a nominal speed of 1400 rpm.

The axial fans of the company Kaiser Ventilatorenbau can be used in many ways, for example for cooling of or in machines, for cooling of offices or for cooling of smaller generator rooms. The design as a built-in fan is particularly well suited for use in office walls or hall walls. The sturdy powder-coated or galvanized steel built-in ring also allows use in containers for cooling or ventilation.

Voltage and control of the MD354 axial fan

All AC axial fans can be controlled by temperature controllers at 230Volt.

Air quality controllers from our offer are often used to make the air more comfortable in busy office spaces. Our axial fans are also widely used in stables and are appreciated for their high quality.

Thermal contacts in the form of bimetal switches are also an option to prevent damage to the motor when used in high temperatures.

The rated voltage of the three-phase fan is 400 volts and 50 hertz, but voltages for the USA (480 volts, 60 hertz) and Canada (575 volts, 60 hertz) and special voltages (500 volts, 50 hertz) are also available.

Stainless steel versions of the MD354 axial fan

Stainless steel fans are also included in our offer. Versions in V2A (material number 1.4301 or AISI 304 or X5CrNi189) for food industry and V4A (material number 1.4571 or AISI 316 or X10CrNiMoTil810) for salty air can be ordered on request.

The motors, which are cast in high quality aluminum as standard, can be left raw for the food industry or treated with food color if required. In case of regular acceptance, an aluminum material approved for the food industry is also conceivable.

Painting with paint that is resistant to salt water is also possible for offshore applications.

Material of the axial fan MD354

Aluminum impellers can be manufactured on request for use under high temperatures. Standard impellers are made of glass fiber reinforced plastic material.

A plate fan version in rectangular shape is also possible after consultation and a minimum order quantity.

The standard IP44 protection class can be extended to IP54 or IP56 on request, which also allows use in humid conditions.

If the air direction is specified when ordering, the air flow can be freely selected.

Weather protection dampers or blow-out protection grilles from our offer are also available, if they are necessary for the machine directive.

Technical description of the MD354 axial fan

The axial fan has the possibility of reversible, i.e. reversible air direction. However, a loss of air performance of up to 15% must be expected, as the impeller blades are profiled for optimum efficiency.
The motors have been specially developed by Kaiser Ventilatorenbau and adapted to the axial fans. They carry thermal protection class F or H according to DIN EN 60085.
Type tests, salt water tests and IPx6 tests are available. The type tests refer to the storage and installation temperature, the salt water tests to the stainless steel fans in the offshore area and the IPx6 tests to the moisture class of the fans.
The fans are designed to be energy efficient and all carry the CE mark. They meet the requirements of the ERP 2015 Ecodesign Directive (ErP Directive 2009/125/EC EU Regulation No. 327/2011).
The 230 volt AC fans are also controllable by stepless electronic speed controllers, and control based on this can be taken over by temperature controllers or CO2 controllers and air quality controllers.
The three-phase AC motors can be controlled by frequency converters, but according to DIN-IEC/TS 60034-17 it must be noted that, depending on the frequency converter, an all-pole sinusoidal filter must be connected between the motor and the fan.
CAD data in STEP exchange format are permanently available for our customers on our website, which allows easy integration of our fans into the design and planning process.

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