The HELI HRFD 50/4 EX high-performance fan from Helios is a powerful axial fan specifically designed for demanding ventilation applications. With its cylindrical duct sleeve and flanges on both sides, it provides a robust and reliable solution for air circulation. The fan is explosion-proof according to ATEX, making it suitable for use in potentially hazardous environments. Made from galvanized sheet steel, the fan features a rotor equipped with seven thermoplastic blades, contributing to high efficiency and low operating noise. The dynamic balancing ensures vibration-free operation, while the closed squirrel cage motor is maintenance-free and equipped with low-noise ball bearings. The HELI HRFD 50/4 EX is designed for use in temperature ranges from -20 °C to +40 °C, offering reliable performance in various environments.

• Explosion-proof according to ATEX for use in hazardous environments
• Dynamic balancing according to quality level G 6.3 VDI 2060 and DIN ISO 1940 for vibration-free operation
• Rotor with 7 thermoplastic blades for high efficiency and low noise generation
• Maintenance-free closed squirrel cage motor with long-term lubrication
• Suitable for temperature ranges from -20 °C to +40 °C.