Not registered yet? Take advantages of registration:
Products saving in a binding to the projects
Online consultation from experts

Privacy policy

Blauberg Iso-B 125

Sound-insulated centrifugal fans. Maximum air capacity up to 330 m³/h.
EAN codeEAN4058448016233
  • Description
  • Characteristics
  • Downloads

Supply and exhaust ventilation systems installed in premises with high requirements to the noise level.Compatible with Ø 100 up to 315 mm round air ducts.Suitable for limited mounting space.


Galvanized steel casing internally filled with 30 mm thermal- and sound-insulating layer made of non-flammable foamed polyurethane.Connecting spigots are equipped with rubber seals.Fixing brackets for easy mounting.


Two-pole external rotor asynchronous motor with centrifugal impeller and backward curved blades.The motor is installed on specially designed vibration-damping mounts to absorb vibration and noise.Equipped with ball bearings for longer service life.Integrated thermal protection with automatic restart.Dynamically balanced turbine.


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


Mounting in any position.Fixed to wall or ceiling with a fixing bracket supplied as a standard.Flexible air ducts are fixed on fan spigots with clamps.Power is supplied through an external terminal box.


G – temperature and speed controller with external temperature sensor fixed on 4 m cable. The fan is equipped with a power cord with a socket or a plug (G1).GI – temperature and speed controller with a sensor built into the fan casing. The fan is equipped with a power cord with a socket or plug (GI1).
G and GI options are used for automatic speed control depending on indoor temperature. The best ventilation solution for the premises requiring permanent temperature control as greenhouses, orangeries, etc.
W – the fan is equipped with a power cord and a socket or plug (W1).
max – high-powered motor.

Parameter Iso-B 125 Measurement unit
Voltage 230 V
Frequency 50 Hz
Current 0.32 A
Power 73 W
RPM 2590 min-1
Maximum air capacity 330 m³/h
Sound pressure level at a distance of 3 m 35 dBА
Max. operating temperature -25 +55 °С
EC motor no -
Ingress protection rating IPX4 -
Casing material galvanized steel -
Outdoor mounting no -
Sound-insulated casing yes -
Air duct for round air ducts -
Design centrifugal -
Type Exhaust, Supply -
SEC class C -
Weight 5.4 kg
Mounting Inline -
Documents archieve
Documents archieve
Iso-B - data sheet (pdf 289.34Kb)
Iso-B - user manual (pdf 2.5Mb)
Iso-B - image (png 558.16Kb)
Iso-B - certificate GS (pdf 260Kb)

Type Dimensions [mm]
D B B1 H L L1 L2
Iso-B 125 124 322 280 192 447 380 350