Centrifugal flat box

EFR 12 R

No longer available for delivery
Article number: 0080.0573
Manufacturer: MAICO
Centrifugal flat box with 5 speeds, DN 125
Application examples: Single-family house, Office, Foreman's office, WC
EFR 12 R IM0008816.PNG Centrifugal flat box with 5 speeds, DN 125

Characteristic curve

EFR 12 R - Characteristic curve

Dimensioned drawing

EFR 12 R - Dimensioned drawing [mm]

  1. Electrical connection
  2. Mounting support
A: 121 mm

Technical data

EFR 12 R - Technical data

Article EFR 12 R
Air flow volume 255 m³/h
Rotating speed 2.392 1/min
Impeller type radial
Rated voltage 230 V
Nominal output 53 W
PMax 53 W
Imax 0,24 A
Degree of protection IP 20
Mains cable 3 x 1,5 mm²
Installation site Ceiling
Installation position vertical / horizontal
Housing material Sheet steel, galvanised
Weight 4,7 kg
Swivelling fan
Nominal size 125 mm
Width 241 mm
Height 122 mm
Depth 448 mm
Airstream temperature at IMax -20 °C up to 50 °C
Ambient temperature 50 °C
Sound pressure level 37 dB / Distance 3 m, Free-field conditions
Packing unit 1 piece
Range C
GTIN (EAN) 4012799805731
Article number 0080.0573


63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


LWA2, high (dB(A))








LWA2= housing sound power level in dB.


Product description


EFR 12 R

short description

Centrifugal flat box with 5 speeds, DN 125

Product description


  • EFR 10, EFR 12: 1 speed setting.
  • EFR 10 R, EFR 12 R: 5 speed settings; one of the 4 levels can be selected for the base load operation. Level 5 (maximum) is activated by an extra contact, e.g. light switch or hygrostat. The overrun time is set in the unit using a potentiometer (3 - 25 minutes).


  • Installation in DN 100 and DN 125 ventilation ducts.
  • Smallest dimensions for installation where space is at a premium. Ideal for redevelopments.
  • Centrifugal impeller with backwards curved blades.
  • Inlet and outlet side connection couplings for direct installation in ventilation ducts.
  • IP 20 degree of protection.


  • Thermal overload protection as standard feature.
  • Robust motor with ball bearings, maintenance-free.

Mounting instructions

  • Can be fitted in any position.
  • With mounting plate for wall and roof installations.

Table of contents

Wiring diagram

EFR 12 R - Wiring diagram

Predecessor - successor

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