Semi-centrifugal duct fan

ERM 18 Ex e

Article number: 0080.0290
Manufacturer: MAICO
Semi-centrifugal duct fan, DN 180, alternating current, explosion proof
Application examples: Environment with explosion hazard (zone 1 and 2), Dye shop, Battery room, Commercial premises, Production facility
ERM 18 Ex e IM0009884.PNG Semi-centrifugal duct fan, DN 180, alternating current, explosion proof
ERM 18 Ex e IM0017898.PNG Semi-centrifugal duct fan, DN 180, alternating current, explosion proof

Characteristic curve

ERM 18 Ex e - Characteristic curve

Dimensioned drawing

ERM 18 Ex e - Dimensioned drawing [mm]

Technical data

ERM 18 Ex e - Technical data

Article ERM 18 Ex e
Air flow volume 310 m³/h
Rotating speed 2.780 1/min
Impeller type semi-radial
Speed controllable
Type of voltage Alternating current
Rated voltage 230 V
Frequency 50 Hz
Nominal output 50 W
cosφ 0,9
Inom 0,25 A
Imax at UNominal 0,25 A
Degree of protection IP 54
Insulation class B
Mains cable 3 / 1,5 mm²
Installation position vertical / horizontal
Housing material Synthetic material
Colour Signal black, similar to RAL 9004
Weight 3,6 kg
Nominal size 180 mm
Width 262 mm
Height 252 mm
Depth 187 mm
EX designation in accordance with the ATEX Directive Ex II 2 G
EX designation in accordance with standard Ex e IIB + H2 T4 Gb
Ta ambient temperature -20 °C ≤ Ta ≤ +50 °C
IA/IN 2,5
Time tE 50 sek
Operating mode S1
EC type examination certificate EX5 01 10 39250 006
Temperature class T4
Capacitor capacity / voltage 3µF/280V
Temperature class of insulating materials Th. Cl. 130 (B)
Packing unit 1 piece
Range C
GTIN (EAN) 4012799802907
Article number 0080.0290


63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz


LWA5, S5 (dB(A))










LWA5= free inlet sound power level in dB.


ERM 18 Ex e - Accessories

Specific accessories

Product type Name Art. No. Price*(EUR) Action
Protective grille SGM 18 Ex 0150.0131 on request
  • On the notes
Flexible cuff ELM 10 Ex 0092.0261 on request
  • On the notes
Flexible cuff ELM 12 Ex 0092.0262 on request
  • On the notes
Flexible cuff ELM 18 Ex 0092.0245 on request
  • On the notes
Reducer REM 18/14 Ex 0055.0304 on request
  • On the notes
Reducer REM 18/12 Ex 0055.0303 on request
  • On the notes
Reducer REM 18/10 Ex 0055.0302 on request
  • On the notes
Mounting foot FUM 15/18 0036.0001 on request
  • On the notes
Motor protection switch MVEx 0,4 0157.0547 on request
  • On the notes

Product description


ERM 18 Ex e

short description

Semi-centrifugal duct fan, DN 180, alternating current, explosion proof

Product description


  • Explosion protection in accordance with ATEX.
  • Ex II 2G Ex e IIB+H2 T3/T4 Gb.
  • For usage temperatures of -20°C ≤ Ta ≤ +50°C.
  • MAICO Ex fans fulfil the safety requirements of European Directive 2014/34/EU for units and protective systems in explosion-endangered areas.
  • For zone 1 and 2.
  • Housing and impeller are made from high quality synthetic material, antistatic
  • Semi-centrifugal impeller, favourable flow technology.
  • Inflow direction equals outflow direction. Thus resulting in simple installation.
  • Can be fitted in any position.

Air flow direction

  • Airstream and rotational directions are indicated by arrows marked on the fan housing


  • Robust motor with ball bearings, maintenance-free.
  • Capacitor motor with operating capacitor fitted ready for use on fan.

Mounting instructions

  • Inlet and outlet side connection couplings for direct installation in ventilation ducts.
  • Reducers for connecting to different duct diameters (intake or exhaust sockets); see accessories.
  • Use ELM-Ex flexible cuffs to prevent transfer of vibrations onto the duct system.
  • ERM 22 Ex e: 2 reducers to DN 200 included in scope of delivery.

Electrical connection

  • Terminal box fitted to fan housing, explosion proof.

Required safety technology

  • A motor protection switch is needed to fuse the ERM Ex units.
  • Maico provides the MVEx… motor protection switch to monitor the maximum motor current for this purpose.
    • Type-examination tested according to Directive 2014/34/EU (ATEX).
    • Installation exclusively in non-explosive areas.

Safety instructions

  • No speed control allowed.
  • Fan may only be operated using the rated voltage shown on the rating plate.
  • 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 for fans with free inlet or outlet. To do this, fit a SGM-Ex protective grille.

Special versions

  • Special voltages are available as special versions on request, at an extra cost.
  • Information on operation at temperatures occasionally below -20°C available upon request.
  • Feasibility must be checked in each case.

Table of contents

Wiring diagram

ERM 18 Ex e - Wiring diagram

ERM...E Ex e with MVEx...

Main switch supplied by the customer

Predecessor - successor

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