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Blauberg Centro-M 250 E

Inline centrifugal fans. Maximum air flow up to 900 m³/h.
EAN codeEAN4058448073847
  • Description
  • Characteristics
  • Downloads
  • Dimensions
  • Additional characteristics
  • Designation key
  • Accessories

Supply and extract ventilation systems installed in various premises.Direct mounting inside air ductworks.Compatible with ∅ 100 to 450 mm round air ducts.

Smooth speed control with an external thyristor controller or step speed control with an external auto transformer (both available upon separate order).


The casing is made of steel with a special polymer coating.Aerodynamically shaped casing.External terminal box for connection to power mains.

max: high-powered motor.L: low-powered and low-noise motor.FR1 (for standard sizes 100–315): 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.W1: power cable with mains plug.

Single-phase external rotor motor with a centrifugal impeller with backward curved blades.Equipped with ball bearings for longer service life.Overheat protection with built-in thermal switches with automatic restart.Dynamically balanced impeller.Some standard sizes have high-powered motors (Centro-M max).For ventilation of premises with high requirements to noise level low-noise modifications are available (Centro-M L).


Any mounting position.The fans with the connecting diameter from 100 up to 315 mm are fixed to wall or ceiling with mounting brackets supplied as a standard.The fans with the connecting diameter from 355 up to 450 mm are fixed with mounting brackets fixed on the casing.Flexible air ducts are fixed on the fan spigots with clamps.

Centro-M 100 – Centro-M 315 Centro-M 355 – Centro-M 450
Parameter Centro-M 250 E Measurement unit
Voltage 220-240 V
Phase 1 ˜
Frequency 50 Hz
Power 95 W
Current 0.47 A
RPM 2050 min-1
Maximum air flow 250 l/s
Maximum air flow 900 m³/h
Sound pressure level at 3 m 47 dBА
Transported air temperature -25...+45 °С
Motor IP rating IP44 -
Ingress protection rating IPX4 -
EC motor no -
Weight 6.2 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 C -
Mounting Inline -
ErP 2018 -
Documents archieve
Documents archieve
Select a document type
  • Catalogues
  • Technical documentation
  • Certificates
Centro-M - user's manual (pdf 1.06Mb)
Centro-M - image (png 396.7Kb)
Centro-M - data sheet (pdf 1.05Mb)
Centro-M, Centro-MZ - certificate GS (pdf 449.98Kb)
Centro-M, Centro-MZ - certificate LVD (pdf 309.45Kb)


Model Dimensions [mm]
ØD ØD1 B B1 L L1 L2 L3
Centro-M 250 E 248 345 395 355 250 25 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 76 83 81 83 79 75 64 68 78
LwA to outlet [dBA] 87 63 75 72 80 82 80 75 62 66 76
LwA to environment [dBA] 67 34 48 59 62 62 60 49 38 47 57
Designation key
Designation key
Series Duct diameter [mm] Motor modifications Options
Centro-M 100; 125; 150; 160; 200; 250; 315; 355; 400; 450 max: high-powered motor
L: low-powered motor
FR1 (available for Ø 100-315): 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
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