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Blauberg Centro-M EC 250 L

Inline centrifugal fans with EC motor. Maximum air flow up to 985 m³/h.
EAN codeEAN4058448050916
  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Designation key

Supply and extract ventilation systems installed in various premises. Direct mounting inside air ductworks. For arranging energy-saving and controllable ventilation systems. Compatible with Ø 100 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.


The casing is made of steel with a special polymer coating. Aerodynamically shaped casing. External 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.

Any mounting position.Fans are fixed to wall or ceiling with mounting brackets supplied as a standard.Flexible air ducts are fixed on the fan spigots with clamps.

Parameter Centro-M EC 250 L Measurement unit
Voltage 230 V
Phase 1 ˜
Frequency 50/60 Hz
Current 0.74 A
Power 100 W
RPM 2500 min-1
Maximum air flow 274 l/s
Maximum air flow 985 m³/h
Sound pressure level at a distance of 3 m 44 dBА
Max. operating temperature -25...+60 °С
EC motor yes -
Ingress protection rating IPX4 -
Weight 5.09 kg
Casing material polymer coated steel -
Outdoor mounting no -
Sound-insulated casing no -
Air duct for round air ducts -
Connection diameter 250 mm
Design centrifugal -
Type Exhaust, Supply -
SEC class B -
Mounting Inline -
ErP 2018 -
Capacity diagram
Capacity diagram
  • Selection method:
  • Air capacity:
  • Pressure:
Operating point
  • Air capacity: --
  • Pressure: ---
Documents archieve
Documents archieve
Centro-M EC - data sheet (pdf 1Mb)
Centro-M EC - user's manual (pdf 2.43Mb)
Centro-M EC - image (png 455.81Kb)

Type Dimensions [mm]
ØD ØD1 B B1 L L1 L2 L3
Сentro-M EC 250 L 248 345 395 355 250 25 30 40
Designation key
Designation key
Series Motor type Duct diameter [mm] Options


electronically commutated motor

100; 125; 150; 160; 200; 250; 315

max: high-powered motor
L: low-powered motor
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
W1: power cable with mains plug