MBPX 31 T4 0,25kW Zone 2 (Ex db IIC T4)

The Casals MBPX 31 T4 0.25kW centrifugal fan is designed for corrosive air transport in ATEX Zone 2 classified environments — where an explosive atmosphere may occasionally occur during normal operation. Its fully polypropylene construction combined with a II2G Eex-d certified motor makes it the correct solution for chemical and petrochemical industry, laboratory extraction cabinets, chemical coating plants and any application where the air simultaneously contains corrosive and flammable vapours.

ATEX certification: Certified ATEX II3G (Zone 2, gas) and II3D (Zone 22, dust) under Directive 2014/34/EU. The installed motor is II2G Eex-d IIC T4 — one category more restrictive than the Zone 2 minimum requirement — providing an additional safety margin.

Construction:

• Antistatic PE-el polypropylene housing — resistant to acids, alkalis, chlorine vapours and saline solutions
• Backward curved polypropylene impeller — dynamically balanced, self-cleaning
• Motor support in rolled steel sheet with epoxy polyester powder coat — corrosion protected
• Stainless steel nuts and bolts throughout
• Squirrel-cage asynchronous motor, IP-55, Class F insulation, 230/400V 50Hz
• Standard orientation: LG270

Performance data (air at 20°C, density 1.2 kg/m³):

Acoustic data:

Mechanical data:

• Inlet diameter: Ø250 mm
• Fan weight: 19 kg
• Motor weight: 6.5 kg
• Max current at 400V: 0.84 A
• Motor efficiency: 55%

Recommended applications:

• Chemical and petrochemical industry — acid or alkaline vapour transport with occasional explosion risk
• Laboratory extraction cabinets handling organic solvents
• Chemical coating plants (zinc plating, phosphating, anodising) in Zone 2
• General ventilation of ATEX Zone 2 classified spaces

Maximum admissible temperature varies depending on the corrosive gas being transported — check the compatibility table in the technical datasheet or contact us before ordering.

Available certified accessories for this model:

• Safety switch
• ATEX switch 
• PVC anti-vibration flexible joint 
• Circular gravity damper 
• Adjustable damper
• Stainless steel protection grid
• Anti-vibrating flange
• Frequency speed controller 
• Drain plug — recommended for condensate-forming environments

On request: 60Hz motors and special voltage motors, two-speed motors.