The Helios AMW 355/4 is a medium pressure axial fan designed with a long cylindrical duct casing constructed from sheet steel, which houses both the impeller and motor. It features flanges on both sides with hole patterns conforming to DIN 24155 Pt.3 for easy installation.
This model incorporates an axial impeller with 14 aerodynamically profiled polymer blades, dynamically balanced to DIN ISO 1940 – 1 class 6.3 to ensure smooth, low-vibration operation. The totally enclosed AC condenser motor is maintenance-free and equipped with built-in thermal contacts for enhanced safety. Speed control is facilitated by voltage reduction. The motor uses low-noise sealed-for-life ball bearings and is not reversible.