MUB-EX Insulated duct fans

Hard-wearing explosion-proof fans for critical applications

  • Combine maximum safety with maximum flexibility

  • Certified according to ATEX directive 2014/34/EU

  • Discharge direction adjustable on site

  • Low sound level

Safety first

MUB EX fans are designed for challenging environments where explosive atmospheres can occur. Which is why they are tested according to ATEX directive 2014/34/EU – to ensure they’ll perform as intended after installation.

Sturdy and strong

MUB EX fans come with an aluminium frame and impellers, double skin panels manufactured from galvanised steel, shock-resistant corners, and panel rivets. Making them highly resistant to environmental stressors in their specialised applications.


Like all MUB fans, MUB EX fans come with removable panels so the outlet side can be chosen on-site prior to installation. Giving you further flexibility if your plans or requirements change in between ordering and final installation.


MUB-EX can be used for temperature classes T1, T2 and T3. Exhaust of explosive gases in Zone 1 and Zone 2, and groups IIA and IIB plus hydrogen H² is possible.


The casing consists of a corrosion-resistant aluminium frame with fibreglass reinforced plastic corners of PA6; highly shock-resistant. Panels made of double skin galvanized sheet steel with 30 mm acoustic and thermal rockwool insulation.

The inlet nozzle is made of copper, which prevents sparking even in exceptional cases.

The MUB-EX fans are designed for straight airflow as standard. Due to its flexible components, the air direction can be adjusted on site.


The MUB-EX fans use radial impeller with backward curved blades. These are made out of alluminum, dynamically balanced and paired with corresponding external rotor motors.


Voltage controllable, explosion proof, 3-phase external rotor motor. Separate “Ex-e” connection box available as an accessory.

Motor protection

Integrated PTC thermistors, to be connected to a motor protection device.


Speed controllable by a 5-step transformer


The MUB-EX fans can be installed in any position.