Semi-centrifugal duct fan

ERM 25 Ex t/60 Hz

New development
Article number: 0080.0378
Manufacturer: MAICO
Semi-centrifugal duct fan, DN 250, single-phase AC 230 V/60 Hz, explosion-proof, medium: dust

Product data sheet
ERM 25 Ex t/60 Hz IM0009884.PNG Semi-centrifugal duct fan, DN 250, single-phase AC 230 V/60 Hz, explosion-proof, medium: dust
ERM 25 Ex t/60 Hz IM0019950.PNG Semi-centrifugal duct fan, DN 250, single-phase AC 230 V/60 Hz, explosion-proof, medium: dust
ERM 25 Ex t/60 Hz IM0017898.PNG Semi-centrifugal duct fan, DN 250, single-phase AC 230 V/60 Hz, explosion-proof, medium: dust
Back
  • On the notes
ERM 18 Ex t
ERM 18 Ex t/60 Hz
ERM 22 Ex t
ERM 22 Ex t/60 Hz
ERM 25 Ex t
ERM 25 Ex t/60 Hz

Characteristic curve

ERM 25 Ex t/60 Hz - Characteristic curve

Dimensioned drawing

ERM 25 Ex t/60 Hz - Dimensioned drawing [mm]

Technical data

ERM 25 Ex t/60 Hz - Technical data

Article ERM 25 Ex t/60 Hz
Air flow volume 1.010 m³/h
Rotating speed 3.200 1/min
Speed controllable −
Type of voltage Alternating current
Rated voltage 230 V
Frequency 60 Hz
Nominal output 495 W
cosφ 0,97
Inom 2,2 A
Imax at UNominal 2,2 A
Degree of protection IP 64
Insulation class F
Mains cable 3 x 1,5 mm²
Housing material Synthetic material
Impeller material Synthetic material
Colour Signal black, similar to RAL 9004
Weight 7,18 kg
Weight including packaging 7,38 kg
Nominal size 250 mm
Width 340 mm
Height 337,5 mm
Depth 232 mm
Width with packaging 365 mm
Height with packaging 365 mm
Depth with packaging 250 mm
EX designation in accordance with the ATEX Directive Ex II 2 D
EX designation in accordance with standard Ex tb IIIB T200°C Db IP64 / Ex h IIIB T200°C Db
Ta ambient temperature -20 °C ≤ Ta ≤ +50 °C
IA/IN 2,2
Time tE 41
Operating mode S1
EC type examination certificate TÜV-A 18ATEX0054 X, IECEx tPS 19.0025X
Temperature class T200°C
Capacitor capacity / voltage 16µF/280V
Temperature class of insulating materials Th. Cl. 155 (F)
Packing unit 1 piece
Range C
GTIN (EAN) 4012799803782
Article number 0080.0378

 

63 Hz

125 Hz

250 Hz

500 Hz

1 kHz

2 kHz

4 kHz

8 kHz

Total

LWA5, high (dB(A))

45

59

69

73

78

74

68

62

81

LWA5= free inlet sound power level in dB.

Accessories

ERM 25 Ex t/60 Hz - Accessories

Specific accessories

Product type Name Art. No. Price*(EUR) Action
Protective grille SGM 25 Ex 0150.0133 on request
  • On the notes
Flexible cuff ELM 18 Ex 0092.0245 on request
  • On the notes
Flexible cuff ELM 20 Ex 0092.0248 on request
  • On the notes
Flexible cuff ELM 25 Ex 0092.0249 on request
  • On the notes
Reducer REM 25/20 Ex 0055.0309 on request
  • On the notes
Reducer REM 25/18 Ex 0055.0308 on request
  • On the notes
Mounting foot FUM 25 0036.0005 on request
  • On the notes
Motor protection switch MVEx 1,6 0157.0549 on request
  • On the notes
Differential pressure switch DDEx 500 0157.0302 on request
  • On the notes
Vibration sensor SWEx 0157.0303 on request
  • On the notes

General accessories

Product type Name Art. No. Price*(EUR) Action
Shutter AS 25 Ex New development 0151.0403 on request
  • On the notes
External grille MLZ 25 0151.0102 on request
  • On the notes

Product description

Productdescription

ERM 25 Ex t/60 Hz

short description

Semi-centrifugal duct fan, DN 250, single-phase AC 230 V/60 Hz, explosion-proof, medium: dust

Product description

Model

  • Ex II 2D Ex tb IIIB T200°C Db IP64 / Ex II 2D Ex h IIIB T200°C Db.

Special features

  • Semi-centrifugal duct fan, explosion-proof, medium: dust.
  • Explosion protection and approvals in accordance with ATEX and IECEx.
  • Ex II 2 D Ex tb IIIB T135°C/T200°C Db IP64 Ex II 2 D Ex h IIIB T135°C/T200°C Db.
  • For usage temperatures of -20°C ≤ Ta ≤ +50°C.
  • Qualified for all dusts of the Ex-group IIIA and IIIB.
  • MAICO Ex fans fulfil the safety requirements of European Directive 2014/34/EU for units and protective systems in potentially explosive atmospheres.
  • For zone 21 and 22.
  • Types of ignition protection: “t” - protection through housing and “c”- constructional safety.
  • IP 64 degree of protection.
  • Single-phase AC version.
  • Housing made of high quality, conductive plastic, antistatic.
  • Compact design for installation in small spaces.
  • For installation in a duct system.
  • Simple installation as the inflow direction is the same as the outflow direction.
  • Can be fitted in any position.

Impeller

  • Semi-centrifugal impeller made of conductive plastic, with optimised flow technology.
  • Balance quality of the motor/impeller combination G 6.3 according to category BV-3 in accordance with ISO 14694.

Air flow direction

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

Motor

  • Robust motor with ball bearings, maintenance-free.
  • Capacitor motor with operating capacitor fitted ready for use on fan.
  • S1 operating mode (continuous operation).

Installation instructions

  • Inlet and outlet side connection socket for direct installation in ventilation ducts.
  • Reducer for connection to different duct diameters (intake or blowout socket), see accessories.
  • Use ELM Ex flexible cuffs to prevent transfer of vibrations to the duct system.
  • With ERM 22 Ex..: 2 reducers to DN 200 included in scope of delivery.

Electrical connection

  • Terminal box mounted on the fan housing, explosion-proof, with cable screw connections.

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.
  • Only operate the fan with the rated voltage specified 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. Attach SGM Ex protective grille for this purpose.

Special versions

  • Special voltages are available as special versions on request and at 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 25 Ex t/60 Hz - Wiring diagram



ERM...E Ex with MVEx...

Main switch supplied by the customer



Predecessor - successor

Notes
Inquiry
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

On this website, technologies such as cookies and measurements of reach (targeting and tracking) are used (services). This means that personal information such as the IP address and browser information is processed to continuously improve our website as well as to display to you customised content that corresponds to your individual interests. You may of course influence the use of this information through the settings you choose. The settings you have chosen are stored in a necessary selection cookie. With the exception of the selection cookie mentioned above, technically non-essential cookies and measurements of reach are only used if you provide permission in advance by clicking “ACCEPT ALL AND CLOSE”. Details and options for customising your consent can be found under Data protection settings.

Here you can select a variety of different categories of services or cookies. By activating the corresponding “Statistics & analytics” checkbox and confirming “Save settings”, you can give your informed consent to the use of cookies for customisation purposes. At the bottom of the website under “Data protection settings”, you can change or revoke your consent and settings for the individual services at any time with effect for the future.

Necessary cookies are absolutely necessary for the operation of the website. Without these cookies, the website would not function properly.

These cookies and services collect and process data for statistics and analytics and thus enable further improvements of this website for users. Google Analytics and Google Adwords Conversion are used for this purpose. You will find a detailed description of such use in our Privacy Policy.

Save settings ACCEPT ALL AND CLOSE Data protection settings
Data protection