The Helios HRFD 400/4 EX is an axial high-performance fan specifically designed for use in demanding environments. With a rated voltage of 400 V and a frequency of 50 Hz, this fan has a power consumption of 0.37 kW and an impressive airflow of 4380 m³/h. The galvanized steel housing ensures durability and resilience, while the explosion-proof design according to ATEX provides additional safety in potentially hazardous areas. The fan is suitable for installation in ducts with a diameter of 400 mm and can operate in a temperature range of -20 °C to +40 °C. The construction includes a rotor with seven blades made of thermoplastic material, which ensures high efficiency and a low noise level. Additionally, the dynamic balancing of the fan guarantees vibration-free operation, extending the lifespan of the device and minimizing maintenance efforts.

• Axial high-efficiency fan with explosion-proof design according to ATEX
• Dynamic balancing according to quality class G 6.3 VDI 2060 and DIN ISO 1940
• Rotor with 7 blades made of thermoplastic material for high efficiency
• Quiet ball bearings with long-term lubrication for maintenance-free operation
• Suitable for temperature ranges of -20 °C to +40 °C.