Helios Fans AMD 355/4

The Helios AMD 355/4 is a dependable and efficient axial fan designed for medium-pressure ventilation in industrial and commercial applications. With a 355mm diameter galvanized steel cylindrical housing and flanges according to DIN 24155 Part 3, the fan offers seamless integration into standard duct systems.

Powered by a 4‑pole, 3‑phase direct-drive motor, the AMD 355/4 operates at lower speeds, making it ideal for installations where low noise and steady airflow are essential. The motor is maintenance-free, features sealed-for-life ball bearings, integrated thermal contacts, and an IP54 rating for durable performance in challenging environments.

Its 14-blade aerodynamically optimized polymer impeller is dynamically balanced to DIN ISO 1940 – 1 (class 6.3), ensuring quiet, vibration-free operation. Speed can be regulated via voltage reduction, allowing airflow to be tailored to system requirements.

Capable of handling air temperatures up to 40°C (controlled) or 60°C (uncontrolled), the AMD 355/4 is well-suited for HVAC systems, workshops, manufacturing plants, and commercial buildings requiring reliable and quiet ventilation.

With its sturdy build, noise-reducing performance, and energy-efficient design, the Helios AMD 355/4 is a solid choice for long-term ventilation reliability.