Shutter, electric

BK 25

Article number: 0093.0901
Manufacturer: MAICO
Electric shutter with bimetal cap for ventilation channels, DN 250
BK 25 IM0009752.PNG Electric shutter with bimetal cap for ventilation channels, DN 250

Characteristic curve

Dimensioned drawing

BK 25 - Dimensioned drawing [mm]

  1. Cable entry
A: 370 mm
B: 262 mm
C: 320 mm
D: 105,5 mm

Technical data

BK 25 - Technical data

Article BK 25
Loss of pressure 11 Pa
Type of voltage Alternating current
Rated voltage 230 V
Frequency 50 Hz/60 Hz
Nominal output 25 W
Inom 0,1 A
Imax 1,8 A
Starting current 1,8 A / 1 s
Degree of protection IP 55
Drive Bimetal
Installation outside
Installation site Wall
Installation position vertical
Material Synthetic material
Colour Traffic white, similar to RAL 9016
Lamella colour Silver grey
Weight 1,4 kg
Type of shutter electrical
Suitable for nominal size 250 mm
Width 370 mm
Height 370 mm
Depth 50,5 mm
Ambient temperature 40 °C
Packing unit 1 piece
Range C
GTIN (EAN) 4012799939016
Article number 0093.0901

BK 25 -

Product description

Productdescription

BK 25

short description

Electric shutter with bimetal cap for ventilation channels, DN 250

Product description

  • Electrical shutter for weather protection and prevention of cold air entry when fan is switched off.
  • MK with gear motor: Rated power 3 W, nominal current 0.015 A.
  • BK with bimetal cap: Rated power 25 W, rated current 0.01 A, start-up current 1.8 A - 1s. Speed control only with STU 2,5 / ST 2,5 speed controller.
  • Installation in accordance with protection class II (without protective-conductor terminal).
  • Opens and closes when the fan is switched on and off.
  • MK needs 4-core mains cable.
  • BK needs 3-core mains cable.
  • Special models with limit switch can be supplied on request. Limit switch is activated when the shutter is completely open.

Table of contents

Wiring diagram

BK 25 - Wiring diagram

ENR 20, ENR 25, ENR 31 with on/off switch and three-position switch

S1 - On / Off

S2 - Switching between air extraction and ventilation

Terminal 5 - Air extraction

Terminal 6 - Ventilation

* - duct only for MK... shutter



BK with EN... wall fan, without speed control

S1 fan On/Off, to be supplied by the customer



BK with EN... wall fan, without speed control

S1 fan On/Off, to be supplied by the customer



ENR 20, ENR 25, ENR 31 with W 1, WU 1 reversing switch

W 1 - Reversing switch (air extraction or ventilation), surface-mounted

WU 1 - Reversing switch (air extraction or ventilation), recessed-mounted

* - duct only for MK... shutter



BK with ENR... fan and STW 2,5 speed controller for surface installation

FS6 - Step switch: 2 speeds, ventilation / air extraction (FS 6 cannot be used for ENR 31)

FS7 - Step switch: Ventilation / air extraction



BK with ENR... fan and STW 2,5 speed controller for surface installation

FS6 - Step switch: 2 speeds, ventilation / air extraction (FS 6 cannot be used for ENR 31)

FS7 - Step switch: Ventilation / air extraction



ENR 20, ENR 25, ENR 31 with TRE 5-step transformer and three-position switch

TRE - 5-step transformer (on/off, 5-speed)

S1 - Reversing switch (air extraction or ventilation)

* - duct only for MK... shutter



ENR 20, ENR 25, ENR 31 with TRE..S 5-step transformer and ESS 20 5-step switch.

TRE - 5-step transformer, control cabinet installation

ESS 20 - 5-step switch (on/off, 5-speed)

S1 - Reversing switch (air extraction or ventilation)

* - duct only for MK... shutter



Predecessor - successor

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