The HELI 5658 radial duct fan from Helios is a powerful fan specifically designed for installation in duct systems. With two power levels, it enables efficient air volume transport, even against high resistance. The housing is made of galvanized steel sheet, ensuring durability and stability. The fan is equipped with a radial impeller featuring backward-curved plastic blades to guarantee high efficiency and quiet operation. The single-phase external rotor motor is maintenance-free and includes built-in thermal contacts as well as sealed ball bearings with long-term lubrication, extending the device's lifespan. The HELI 5658 is ideal for applications where reliable air circulation is required.

• Two power levels for flexible application possibilities
• Maintenance-free external rotor motor with high efficiency
• Quiet ball bearings with long-term lubrication
• Compatible with electronic controllers and step transformers for power regulation.