Rectangular duct fan with casing manufactured from galvanised sheet steel with a brass inlet cone.

Voltage controllable external rotor motors with pre-attached cable.

Radial impeller with forward curved blades made from galvanised steel.

Speed controllable via a 5-stage transformer.

Motor protection via PTC thermistors, combined with a separately-connected motor protection device.


The fans can be used for temperature classes T1, T2 and T3 classification in accordance with ATEX 94/9/EC.

Conveyance of potentially explosive gases in Zone 1 and Zone 2, Groups IIA and IIB as well as for applications with hydrogen is also possible.