Helios Fans GBW EC 400 B

The Helios GBW EC 400 B is an energy-efficient cubic ventilation box designed to provide reliable air intake and extraction for industrial and commercial environments. It includes intake and extract spigots equipped with flexible sleeves that minimize vibration transmission, contributing to quiet and stable fan operation. Its adaptable side panels allow for easy customization to fit varying structural needs. The unit can be easily positioned using standard crane hooks.

Constructed with a self-supporting enclosure frame of aluminium hollow sections, the ventilation box is durable and built to last. The double-walled side panels, made from galvanised sheet steel and 20 mm thick, are lined with non-combustible mineral wool for excellent sound and thermal insulation. These panels are replaceable and compatible with various accessories, including weather louvres and condensate trays. Additional accessories such as wall brackets and weather protection roofs can be mounted both inside and outside the unit.

At the heart of the GBW EC 400 B is a free-running backward curved centrifugal impeller made of aluminium, directly driven for optimal energy efficiency and low noise levels. The impeller and motor assembly is dynamically balanced according to DIN ISO 1940 Pt.1 class 6.3, ensuring smooth and vibration-free performance.

The fan is powered by an energy-saving, speed-controllable EC external rotor motor rated IP54 for protection and maximum efficiency. This motor is maintenance-free, resistant to radio interference, and ball bearing mounted for longevity. Integrated electronic temperature monitoring safeguards the motor and electronics from overheating.

Speed adjustments are conveniently managed via an internal potentiometer included as standard, allowing precise control of voltage and fan speed. For flexible operation, the fan also supports stepless speed control through an external potentiometer or the universal EUR-EC control system. Electrical connections are made easily through a standard IP54 terminal box connected by cable.

Combining robust construction, energy efficiency, and quiet operation, the Helios GBW EC 400 B is an ideal ventilation solution for demanding industrial applications.