The HELI KRW EC 450/70/40 duct fan is a highly developed radial fan specifically designed for direct mounting in rectangular duct systems. With a housing made of galvanized steel sheet and standardized duct flange profiles on both sides, this fan offers a space-saving design while being service-friendly, as the motor-impeller unit can be swung out. The fan is equipped with a powerful radial impeller featuring backward-curved blades made of plastic and galvanized steel. This ensures vibration-free operation and optimized aerodynamics. The energy-efficient EC external rotor motor guarantees high efficiency and is designed with an IP54 protection class, making it particularly robust. Additionally, the fan offers integrated electronic temperature monitoring and stepless speed control, allowing for flexible adjustment to specific requirements.

• Backward-curved impeller blades for high efficiency
• Energy-saving, speed-controllable EC external rotor motor
• Integrated electronic temperature monitoring
• Vibration-free operation through dynamic balancing
• Service-friendly, swing-out motor-impeller unit.