Axial fan FB

ductACsteel

Overview
The ZIEHL-ABEGG FB series are axial fans with aluminium sheet (pressed-steel) blades, optimised for short-nozzle installations and enabling bi-directional airflow. Blade pitch is adjustable to three positions. The fans are 100% speed-controllable and are available in nominal diameters from 200 to 630 mm. Typical applications include refrigeration, heating technology, chillers, cold chain and industrial/process refrigeration.

Product specification
Designed for short-nozzle use with proven AC external-rotor motor technology. Available dimensions mentioned: 200–630 mm; free-blowing volumetric flow up to 12,500 m³/h and static pressure increases up to 159 Pa for selected sizes.

Properties & special features

• Pressed-sheet/aluminium blades, adjustable to three angles
• Optimised for short nozzles and compact housings
• Bi-directional airflow capability
• 100% speed-controllable
• Compliance and certifications: ErP 2015, VDE, UL, CCC, CE (additional approvals such as GOST/EAC where applicable)
• ATEX-certified variants available for hazardous atmospheres

Motor concepts

• External-rotor motors
• AC technology

Explosion protected version

• Anti-static powder coating (black RAL 9005)
• Available sizes for explosion-protected variants: 350–650 mm
• Temperature class: T3 / T4
• Equipment group: IIB
• External-rotor motor (AC)
• EPL: Gb / Gc
• Suitable for Zone 1 / 2
• Motor ignition protection: Ex eb
• Fan ignition protection: Ex h (constructional safety “c”)
• Operating ambient temperature (explosion-protected variant): −20 to +40 / +60 °C
• Certificates: ATEX

Technical specifications

• Model name: FB series
• Type: Axial fan with pressed-sheet/aluminium blades
• Blade material: aluminium sheet, adjustable to three angles
• Speed control: 100% speed-controllable
• Available dimensions (mentioned): 200–630 mm (explosion variants: 350–650 mm)
• Designed for: short-nozzle applications (refrigeration, heating, chillers, cold chain, process/industrial refrigeration)
• Motor concept: external-rotor motor, AC technology
• Surface finish (explosion variant): anti-static powder coating (black RAL 9005)
• Explosion protection: ATEX-certified options; Equipment group IIB; Temperature class T3/T4; EPL Gb/Gc; Zone 1/2
• Ignition protection: Motor Ex eb; Fan Ex h (constructional safety “c”)
• Operating ambient temperature (explosion-protected variant): −20 to +40 / +60 °C
• Certifications: VDE, UL, CCC, CE, ATEX (where applicable)