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Blauberg Centro EC 250

Inline centrifugal fans with EC motor. Maximum air flow up to 1250 m³/h.
EAN codeEAN4058448030802
  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Designation key
  • Dimensions
  • Additional characteristics
  • Accessories

Supply and exhaust ventilation and air conditioning systems of various premises requiring cost-saving controllable  ventilation. The best ventilation solution for exhaust ventilation of bathrooms, kitchens and other humid premises. Compatible with Ø 100 up to 315 mm round air ducts. 

The fan speed is controlled with a 0–10 V control signal from the following sources:

  • integrated or external speed controller
  • controller with sensors
  • central BMS system.

The control signal value changes depending on air temperature, pressure, smoke concentration and other parameters. During signal value change the fan with EC motor correspondingly changes the rotations speed and delivers required air volume to the ventilation system. The computer central building management systems (BMS) enable integration of several EC motors in network and precise individual operation control for each fan.


Durable, impact-resistant and corrosion-free ABS-plastic casing. Aerodynamically shaped casing. Airtight terminal box for connection to power mains.


High-efficient direct current EC motor with external rotor and backward curved blades. EC technology meets the up-to-date requirements to energy-saving and controllable ventilation and provides up to 35 % energy saving as compared to asynchronous motors. EC motor ensures totally controllable speed range for the fan and has integrated overheating protection with automatic restart. EC motor has no friction and wearing parts as capacitor und brushes. Instead a maintenance-free EC controller electronic circuit board is used. The impeller is dynamically balanced. The fan is compatible with 50 Hz and 60 Hz power mains and the maximum speed does not depend on power mains frequency. 

FR1: smooth speed controller adjustable from 0 to 100 % and power cable with mains plug.

G1: speed controller, temperature controller with external temperature sensor (cable length 4 m), power cable with mains plug.GI1: speed controller, temperature controller with integrated temperature sensor and power cable with mains plug.The G1 and GI1 modifications enable automatic speed control depending on indoor temperature. The optimal ventilation solution for premises requiring permanent temperature control as greenhouses, orangeries, etc.W1: power cable with mains plug.


The fans are designed for duct mounting in any point of the ventilation system with the casing mounted at any angle. In case of vertical mounting a protective outer hood must be installed on the top. Fixation to the floor wall or ceiling is performed with the supplied mounting brackets. Electric connection and installation must be performed in compliance with the manual and the wiring diagram on the terminal box.

Parameter Centro EC 250 Measurement unit
Voltage 230 V
Phase 1 ˜
Frequency 50 Hz
Power 165 W
Current 1.10 A
RPM 2600 min-1
Maximum air flow 347 l/s
Maximum air flow 1250 m³/h
Sound pressure level at 3 m 48 dBА
Transported air temperature -25...+60 °С
Motor IP rating IP44 -
Ingress protection rating IPX4 -
EC motor yes -
Weight 4.3 kg
Air duct for round air ducts -
Design centrifugal -
Type Supply and exhaust -
SEC class -
Mounting Inline -
ErP 2018 -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air capacity:
  • Pressure:
Operating point
  • Air capacity: --
  • Pressure: ---
Documents archieve
Documents archieve
Select a document type
  • Catalogues
  • Technical documentation
  • Certificates
Centro EC - data sheet (pdf 718.97Kb)
Centro EC - image (png 461.26Kb)
Centro EC - user's manual (pdf 1.31Mb)
Centro EC 250 - specification (pdf 32.06Kb)
Designation key
Designation key
Series Motor Spigot diameter [mm] Options


electronically commutated motor

100; 125; 150; 200; 250; 315

FR1: smooth speed controller adjustable from 0 to 100 % and power cable with mains plug
G1: speed controller, temperature controller with external temperature sensor, power cable with mains plug
GI1: speed controller, temperature controller with integrated temperature sensor and power cable mains plug
W1: power cable with mains plug 


Model Dimensions [mm]
ØD ØD1 B L L1 L2 L3
Centro EC 250 250 340 354 265 30 30 40
Additional characteristics
Additional characteristics

To comply with ErP 2018 it is necessary to use a speed controller and local demand control typology (connect the sensor).

Sound power level, A-weighted Total Octave frequency bands [Hz] LpA 3 m LpA 1 m
63 125 250 500 1000 2000 4000 8000
LwA to inlet [dBA] 89 60 77 84 82 84 80 76 64 69 79
LwA to outlet [dBA] 87 63 76 72 81 83 81 76 62 67 77
LwA to environment [dBA] 68 30 49 58 62 65 61 52 38 48 58
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VK / VKA CDT E/0-10