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Blauberg Primo EC 355

Inline mixed flow fan with EC motor. Maximum air flow up to 3685 m3/h.
EAN codeEAN4058448072871
  • Description
  • Characteristics
  • Capacity diagram
  • Downloads
  • Dimensions
  • Designation key
  • Additional characteristics

Inline fans for supply and exhaust ventilation of various commercial and industrial premises requiring powerful air flow.The fans are compatible with ∅ 200, 315, 355 and 400 mm air ducts.Combines wide capabilities and high performance features of axial and centrifugal fans, providing powerful air flow.

The fan speed is regulated by a smooth 0-10 V controller.


The casing is made of polymer (for models 315, 355 and 400 the casing is additionally reinforced with a metal housing).Due to the conically shaped polymer impeller with specially profiled blades, the air stream circular velocity increases, which results in higher air flow and pressure, as compared to characteristics of standard axial fans.The specially designed diffuser, impeller and airflow rectifier at the fan outlet provide smooth air flow distribution and enable the best combination of high capacity, powerful pressure and low noise.The fan casing is equipped with an airtight terminal box for connection to power mains.

Primo EC 200 Primo EC 315 max, 355 (max), 400

Energy efficient EC motor.
220–240 V single phase at 50 Hz.Equipped with ball bearings for longer service life (up to 40 000 hours).All motors have manual reset thermal overload protection.


The fans can be mounted at any place and at any angle within the ductwork system. Several fans may be installed in one system in parallel to attain higher air capacity or in series to increase operating pressure in the system. The fan casing is equipped with fixing brackets for suspended mounting.The fans can be installed using the appropriately sized UM Primo bracket (ordered separately, available for models 315, 355 and 400).

Parameter Primo EC 355 Measurement unit
Voltage 230 V
Phase 1 ˜
Frequency 50 Hz
Current 1.54 A
Power 346 W
RPM 2470 min-1
Maximum air flow 3685 m³/h
Maximum air flow 1024 l/s
Sound pressure level at 3 m 33–63 dBА
Transported air temperature -25…+55 °С
Motor IP rating IP44 -
Ingress protection rating IPX4 -
EC motor yes -
Outdoor mounting no -
Sound-insulated casing no -
Air duct for round air ducts -
Connection diameter 355 mm
Design mixed-flow -
Type Supply and exhaust -
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
Primo / Primo EC - user's manual (pdf 1.64Mb)
Primo / Primo EC 315-355-400 - image (png 553.14Kb)
Primo EC - data sheet (pdf 830.42Kb)
Primo / Primo ЕС - brochure (pdf 3.39Mb)

Model Overall dimensions [mm]
ØD ∅ D1 H H1 L W
Primo EC 355
355 406 408 439 372 566
Designation key
Designation key
Series Motor type Duct diameter [mm] Motor modifications Modifications
Primo EC: electronically commutated motor 200; 315; 355; 400
max: high-powered motor
FR1: smooth speed controller adjustable from 0 to 100% and power cable with mains plug
speed controller, temperature controller with external temperature sensor, power cable with mains plug
power cable with mains plug
Additional characteristics
Additional characteristics

Sound power level, A-weighted Octave frequency bands [Hz] LpA 3 m [dBA] LpA 1 m [dBA]
Total 63 125 250 500 1000 2000 4000 8000
LwA to inlet [dBA] 83 73 76 75 75 78 74 69 61 63 73
LwA to outlet [dBA] 85 70 79 75 77 81 76 71 64 65 75
LwA to environment [dBA] 76 56 64 67 70 71 68 63 53 55 65