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Blauberg Box-I EC 90x50

Inline centrifugal fans with EC motor. Maximum air capacity up to 10850 m³/h.
EAN codeEAN4058448014246
  • Description
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Supply and exhaust ventilation systems installed in various premises.For arranging energy-saving and controllable ventilation systems.Compatible with 600x300 up to 1000x500 mm rectangular air ducts. 


The casing and impeller are made of galvanized steel.The casing is heat- and sound-insulated with 50 mm mineral wool.The fan is rated for continuous operation always connected to power mains.The fan casing has threaded openings for connection of rectangular air ducts.The access cover on the fan casing facilitates servicing and maintenance.

Mounting angles with rubber anti vibration mounts for easy fan mounting. 


For connection to rectangular air ducts. The fan flanges are connected to the air duct by the bolts inserted into the flange holes. In case of the fan connection to the air duct via flexible connectors the fan must be secured to a mounting frame with supports, hangers or brackets. While mounting provide enough space for accessing the cover for service operations.


High-efficient direct current EC motor with external rotor and backward curved blades.

EC technologies meet the latest requirements to arrange highefficient energy saving ventilation. EC motors have energy demand by 50 % less as compared to standard motors and have efficiency up to 90 %. EC motors are featured with high performance, low noise level and well controllable total speed range. Dynamically balanced turbine.


The fan is controlled with a 0-10 V external control signal, e.g. CDT E/0-10 speed controller for EC motors. The fan capacity is regulated by various parameters, including temperature level, pressure, smoke, etc. EC motor changes its rotation speed synchronously with fluctuations of a control parameter to ensure the best suitable air flow.The fan is compatible both with 50 and 60 Hz power mains with no influence to the motor maximum speed. The parameters may be set and controlled due to data exchange between a PC and the fan. The fans can be integrated into a unified decentralized computerized network to adjust ventilation system with respect to specific user's demands.

Parameter Box-I EC 90x50 Measurement unit
Voltage 380-480 V
Phase 3 ˜
Frequency 50/60 Hz
Power 2.98 W
Current 4.60 A
RPM 2040 min-1
Maximum air capacity 10850 m³/h
Sound pressure level at 3 m distance 60 dBА
Max. operating temperature -25 +40 °С
EC motor yes -
Ingress protection rating IPX4 -
Width 900 mm
Height 500 mm
Casing material galvanized steel -
Outdoor mounting no -
Sound-insulated casing yes -
Air duct for rectangular air ducts -
Design centrifugal -
Type Exhaust , Supply -
Weight 128 kg
Mounting Inline -
Documents archieve
Documents archieve
Box-I EC - data sheet (pdf 325.61Kb)
Box-I EC - image (png 569.92Kb)

Type Dimensions [mm]
B H B1 H1 B3 H3 L G K
Box-I EC 90x50 900 500 920 520 1075 810 1000 1045 500