Centrifugal blower

GRK 25/4 D

Article number: 0073.0308
Manufacturer: MAICO
Centrifugal blower made of plastic with rectangular exhaust opening, size 250, three-phase AC
Application examples: Industrial applications
Product data sheet
GRK 25/4 D IM0020613.PNG Centrifugal blower made of plastic with rectangular exhaust opening, size 250, three-phase AC

Characteristic curve

GRK 25/4 D - Characteristic curve

Dimensioned drawing

GRK 25/4 D - Dimensioned drawing [mm]

GRK 25/4 D - Dimensioned drawing Housing orientation [mm]

  1. RD Right-hand version
  2. LG Left-hand version

The GRK 12/2 E and GRK 12/4 D variants are not available in right-hand version RD!

The standard orientation is always LG 270°

Technical data

GRK 25/4 D - Technical data

Article GRK 25/4 D
Air flow volume 3.750 m³/h
Rotating speed 2.900 1/min
Impeller type radial
Speed controllable
Reversing capacity
Type of voltage Three-phase AC
Rated voltage 400 V
Frequency 50 Hz
Nominal output 1.100 W
Inom 3,2 A
Degree of protection IP 55
Insulation class F
Pole-changeable
Installation site Duct connection
Installation position Horizontal
Housing material Plastic, polypropylene
Impeller material Plastic, polypropylene
Colour White
Weight 29 kg
Weight including packaging 32 kg
Size 250 mm
Width 513 mm
Height 590 mm
Depth 568 mm
Width with packaging 600 mm
Height with packaging 700 mm
Depth with packaging 700 mm
Airstream temperature at IMax 50 °C
PTC DIN 44082 M 100
Sound pressure level 65 dB
Packing unit 1 piece
Range C
GTIN (EAN) 4012799733089
Article number 0073.0308

Accessories

GRK 25/4 D - Accessories

Specific accessories

Product type Name Art. No. Price*(EUR) Action
Transition adapter URRI GR 25 0073.0313 on request
  • On the notes

General accessories

Product description

Productdescription

GRK 25/4 D

short description

Centrifugal blower made of plastic with rectangular exhaust opening, size 250, three-phase AC

Product description

Features

  • Centrifugal blower with spiral housing made of plastic.
  • Powerful fans for industrial applications.
  • Suitable for conveying corrosive and acidic media.
  • For simple and direct mounting on a duct system.
  • Low noise level and high efficiency.
  • The motor is outside the air flow.
  • The plastic motor base for mounting the fan is included in the scope of delivery.
  • Housing made of plastic.
  • Standard orientation for LG 270° housing.
  • Suitable for temperature ranges up to 50 °C.
  • Centrifugal impellers with backward curved blades made of polypropylene.

Three-phase AC motor

  • Three-phase AC motor.
  • Protection class IP 55.
  • IE3 motor.
  • S1 operating mode (continuous operation).
  • Speed-controllable with frequency converter.
  • Permissible frequency range for speed control with frequency converter 20-50 Hz.
  • The temperature in the fan motor is monitored by PTC thermistors. The PTC thermistors must be connected to a release system, that permanently disconnects the fan from the power supply if the temperature is too high.

Electrical connection

  • Connection in the terminal box on the motor.

Special versions

  • The following special versions are available on request, at an extra cost:
    • Deviating housing orientation.
    • Version for explosion-proof areas.

Table of contents

Wiring diagram

GRK 25/4 D - Wiring diagram



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