ESQ 31/4

No longer available for delivery
Article number: 0080.0028
Manufacturer: MAICO
Sound-insulated radial fan for indoor fitting, alternating current, DN 315
Application examples: Workplace, Workplace air extraction system, Storage facility, Workshop, Day room
ESQ 31/4 IM0011157.PNG Sound-insulated radial fan for indoor fitting, alternating current, DN 315

Characteristic curve

ESQ 31/4 - Characteristic curve

Dimensioned drawing

ESQ 31/4 - Dimensioned drawing [mm]

  1. Mounting bracket included in the scope of delivery

Technical data

ESQ 31/4 - Technical data

Article ESQ 31/4
Air flow volume 2.000 m³/h
Speed controllable
Type of voltage Alternating current
Rated voltage 230 V
Frequency 50 Hz
Nominal output 120 W
PMax 120 W
Inom 1,2 A
Imax 1,2 A
Degree of protection IP 55
Insulation class F
Mains cable 3 / 1,5 mm²
Housing material Sheet steel, galvanised
Weight 29,4 kg
Swivelling fan
Nominal size 315 mm
Width 506 mm
Height 500 mm
Depth 565 mm
Airstream temperature at nominal current -20 °C up to 50 °C
Airstream temperature at IMax -20 °C up to 50 °C
Sound pressure level 43 dB(A) / Distance 3 m, Free-field conditions
Packing unit 1 piece
Range C
GTIN (EAN) 4012799800286
Article number 0080.0028


63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


LWA2, high (dB(A))









LWA5, high (dB(A))









LWA6, high (dB(A))









LWA2= housing sound power level in dB.

LWA5= free inlet sound power level in dB.

LWA6= free outlet sound power level in dB.

Product description


ESQ 31/4

short description

Sound-insulated radial fan for indoor fitting, alternating current, DN 315

Product description


  • 230 V model.
  • Speed controllable with transformer.
  • Prescribed motor overload switch must be provided by customer.


  • Side panel with exhaust air connection can be fitted in 5 different directions. Can therefore be varied during installation even in awkward spaces.
  • Compact dimensions.
  • Very quiet operation thanks to excellent sound insulation.
  • With prefitted mounting brackets as standard to simplify installation.
  • Impeller with blades curved to the rear . Resulting in optimised efficiency and low maintenance costs.
  • Because of the large spaces between the impeller blades, the fan does not tend to dirty.
  • IP 55 degree of protection.

Mounting instructions

  • Installation inside the building.
  • Side section with intake socket is permanently fitted. The side section with exhaust socket and closed side sections can be interchanged. This allows the Quickbox to be adapted to different mounting situations.
  • Any installation position.
  • Housing wall is easy to remove.
  1. Side panel with intake socket
  2. Side panel, can be screw-fitted
  3. Side panel, removable
  4. Catch
  5. Side wall with exhaust socket
  6. Impeller
  7. Cable screw-connection
  8. Motor with terminal box

S Information sign - Impeller direction of rotation

T Rating plate

Electrical connection

  • Connection to internal terminal box.

Table of contents

Wiring diagram

ESQ 31/4 - Wiring diagram

Predecessor - successor

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