Axial wall fan

DZS 30/42 B

Article number: 0094.0044
Manufacturer: MAICO
Axial wall fan with steel wall ring, DN 300, three-phase AC, pole-changeable
Application examples: Production facility, Commercial premises, Garage, Building container, Storage facility
DZS 30/42 B IM0009968.PNG Axial wall fan with steel wall ring, DN 300, three-phase AC, pole-changeable

Characteristic curve

DZS 30/42 B - Characteristic curve

Dimensioned drawing

DZS 30/42 B - Dimensioned drawing [mm]

  1. Steel wall plate = EZQ/DZQ model
  2. Steel wall ring = EZS/DZS model

Technical data

DZS 30/42 B - Technical data

Article DZS 30/42 B
Model Steel wall ring
Air flow volume 1.870 m³/h / 3.680 m³/h
Air volumenom 1.260 m³/h / 2.700 m³/h / in opt. efficiency
Pressure pfs, nom 53 Pa - 185 Pa / in opt. efficiency
Rotating speed nnom 1.460 1/min - 2.850 1/min / in opt. efficiency
Rotating speed 1.467 1/min / 2.897 1/min
Impeller type axial
Speed controllable
Reversing capacity
Type of voltage Three-phase AC
Rated voltage 400 V
Frequency 50 Hz
Nominal output 70 W / 415 W / in opt. efficiency
Inom 0,3 A / 1 A / in opt. efficiency
Imax 1,3 A
Degree of protection IP 55
Insulation class B
Number of poles at high speed 2
Number of poles at low speed 4
Mains cable 5 / 1,5 mm²
Installation site Wall / Ceiling
Type of installation Surface-mounted
Installation position horizontal / vertical
Material Sheet steel, galvanised
Weight 9,5 kg
Nominal size 300 mm
Width 465 mm
Height 465 mm
Depth 280 mm
Airstream temperature at nominal current 60 °C
Airstream temperature at IMax -20 °C up to 60 °C
Packing unit 1 piece
Range C
GTIN (EAN) 4012799940449
Article number 0094.0044
Article DZS 30/42 B
Total efficiency η 33,4 %
Measurement category A
Efficiency category static
Efficiency level N 42,4
VSD necessary No
Year of manufacture see rating plate
Manufacturer’s name / official registration number / manufacturer's place of establishment Maico Elektroapparate-Fabrik GmbH / Freiburg registration court, HRB 601233 / Villingen-Schwenningen
Art. No. 0094.0044
PBEP / Air volumeBEP / Pfs, BEP 0,415 kW / 2.700 m³/h / 185 Pa
nBEP 2.850 1/min
Specific ratio ≈ 1
Information about dismantling and disposal see mounting instructions
Information about installation, operation and repairs see mounting instructions
Objects used to measure efficiency which are not described by the measurement category -
Sound power levelLWA7 69 dB(A) / 88 dB(A)


63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


LWA7, low (dB(A))










LWA7, high (dB(A))










LWA8, low (dB(A))










LWA8, high (dB(A))










LWA7= housing and free inlet sound power level in dB.

LWA8= housing and free outlet sound power level in dB.


DZS 30/42 B - Accessories

General accessories

Product type Name Art. No. Price*(EUR) Action
Shutter AS 30 0151.0332 on request
  • On the notes
Connection frame ZVR 30 0093.0193 on request
  • On the notes
Shutter, manual RS 30 0151.0340 on request
  • On the notes
Servomotor MS 2 0093.0403 on request
  • On the notes
External grille MLA 30 0151.0113 on request
  • On the notes
External grille MLZ 30 0151.0103 on request
  • On the notes
Extension sleeve VH 30 0055.0032 on request
  • On the notes
Internal grille IG 30 0059.0173 on request
  • On the notes
Main switch, service switch HS 6 0157.0737 on request
  • On the notes
Rotary switch DS 10 0157.0410 on request
  • On the notes
Pole-changing switch P 1 0157.0103 on request
  • On the notes
Reversing switch, pole-changing switch WP 1 0157.0105 on request
  • On the notes
Contactor US 16 T 0157.0769 on request
  • On the notes
Thermostat THR 10 0157.0774 on request
  • On the notes
Thermostat TH 10 0157.0764 on request
  • On the notes
Thermostat TH 16 0157.0748 on request
  • On the notes
Hygrostat HY 230 0157.0126 on request
  • On the notes
Hygrostat HY 230 I 0157.0127 on request
  • On the notes
Hygrostat HY 10 AP Discontinued product 0157.0358 on request
  • On the notes
Hygrostat HY 10 UP Discontinued product 0157.0357 on request
  • On the notes
Air quality controller EAQ 10/1 0157.0777 on request
  • On the notes

Product description


DZS 30/42 B

short description

Axial wall fan with steel wall ring, DN 300, three-phase AC, pole-changeable

Product description


  • Yellow chromated protective grille on the intake side, potection against accidental contact in accordance with DIN EN ISO 13857.
  • 8-blade impellers made of glass-fibre filled polyamide. Dynamically balanced at two levels, in accordance with performance level 6.3, DIN ISO 1940, Part 1.
  • Can be fitted in any position.

Air flow direction

  • The following illustration shows the air flow direction:
  1. Air flow direction A: With air drawn across the motor, standard
  2. Air flow direction B: With air blown across the motor, available on request
  3. Rotational direction
  4. Reversing mode: The volumetric flow is reduced by approx. 35 % with abnormal air flow direction.


  • Asynchronous motor.
  • Speed controllable. Exception: Type EZQ 45/6 B, EZS 45/6 B, DZQ 40/2 B and DZS 40/2 B.
  • Reversible. Exception: Fans with shaded-pole motors (...-E).
  • Not suitable for ventilating steam-saturated air.

Three-phase AC motor

  • DZQ and DZS model series.
  • Rated voltage 400 V, 50 Hz.
  • IP 55 degree of protection. Exception DZQ/DZS... D IP 54.
  • Thermal overload protection as a standard feature. Exception: available on request for DZQ/DZS 25/4 D and pole-changeable axial duct fans.
  • Potential-free terminal connections, which must be connected to e.g. an MV 25 protective motor switch or the control circuit of a contactor.
  • Pole-changeable fans: Ensure overload protection is guaranteed by a motor protection switch provided by the customer.
  • Pole-changeable motors with speed ratios of 8/4 or 4/2 have a Dahlander pole-changing circuit.

Electrical connection

  • To terminal block under the motor cover.

Safety instructions

  • The fan may be operated only if the protection against accidental contact with the impeller is guaranteed to be in accordance with DIN EN ISO 13857.

Special versions

  • The following special versions are available at extra cost on request:
    • Special voltages and frequencies.
    • Single-phase motors with thermal contacts or PTC thermistor, with potential-free terminal connections.
    • Condensation drainage holes.
    • Fans with enhanced anti-corrosion protection.
    • Impellers made of aluminium.
  • Information on operation at temperatures occasionally below -20°C available upon request.
  • If operating with frequency converters, the factory must be consulted.
  • Feasibility must be checked in each case.

Table of contents

Wiring diagram

DZS 30/42 B - Wiring diagram

Predecessor - successor

Product comparison
The wish list option allows you to make a note of all the products you are interested in. You can change your wish list as often as you want to. You can change the quantity and item position of the products, go back to the product page, download product data sheets, delete items and mark products as optional. You can save your wish list to your computer and then call it up again at a later time to make more changes, if required. Using the list, you can then download the tender text for all the products you have saved to the list, create an enquiry or compare products.
Assort Product type Name Art. No. PDF Range List price* (EUR) Quantity Optional Total gross amount (EUR)
There are no products on the list
Save wish list on local computer
Load wish list from local computer


Here you can search for products, documents, contents pages etc.

Our website uses cookies in order to provide you an optimal service. OK

Acknowledgements Data protection