The HELIOS HSW 250/4 fan is a high-performance axial fan specifically designed for use in ventilation systems. With a duct diameter of 250 mm, it provides efficient air circulation of up to 930 m³/h. The fan is made of galvanized steel sheet and features a robust construction with smooth ends and two reinforcing ribs for added stability. The impeller is equipped with profiled plastic blades that are aerodynamically optimized to ensure high performance. The integrated single-phase AC capacitor motor is maintenance-free and has a closed design that guarantees durability and reliability. Additionally, the fan is equipped with low-noise ball bearings that allow for long-term lubrication and promote quiet operation. The ability to control the speed through voltage reduction makes it particularly flexible in application.

• High-performance impeller with profiled blades for optimized aerodynamics
• Maintenance-free single-phase AC capacitor motor
• Low-noise ball bearings with long-term lubrication
• Speed control possible through voltage reduction
• Robust construction from galvanized steel sheet with protective grille.