The HELI VARD280/4/2TK high-pressure duct fan is a powerful ventilation fan designed for use in demanding applications. With its cylindrical duct housing made of galvanized steel sheet and flanges on both sides, it offers a robust and durable construction. The fan is directly driven and features a built-in afterwheel that optimizes efficiency and performance. The semi-axial impeller with eight spatially curved blades made of thermoplastic ensures vibration-free operation, which is guaranteed by dynamic balancing according to quality level G 6.3 VDI 2060 and DIN ISO 1940. The three-phase short-circuit rotor motor with Dahlander winding allows for flexible speed adjustment, while the closed design and maintenance-free, low-noise ball bearings with long-term lubrication enhance the reliability of the device. With an IP54 protection rating, the fan is also protected against dust and splashes, making it ideal for various applications.

• Cylindrical duct housing made of galvanized steel sheet for high stability
• Dynamic balancing according to quality level G 6.3 for vibration-free operation
• Built-in afterwheel for increased efficiency
• Maintenance-free motor with low-noise ball bearings
• Protection class IP54 for dust and splash protection.