Why Choose the Finder 7F.31.8.120.4250 Outdoor Reverse Flow Filter Fan?
The Finder 7F.31.8.120.4250 is a high-performance 120 V AC outdoor reverse flow filter fan designed for effective ventilation and thermal management of industrial electrical cabinets, control panels and equipment enclosures. As part of the Finder 7F Series, this fan provides forced-air exhaust ventilation to help remove accumulated heat and maintain suitable operating conditions for sensitive electrical and electronic components.
Featuring a reverse airflow configuration, the Finder 7F.31.8.120.4250 extracts warm air from electrical enclosures rather than introducing air through a conventional intake fan. Its outdoor-rated construction, replaceable filter mat and robust plastic housing support reliable ventilation in demanding industrial environments. The unit provides IP54 ingress protection, IK08 impact resistance and NEMA Type 3R protection when correctly installed.
With a 120 V AC, 50/60 Hz supply, nominal free-flow airflow of 250/295 m³/h and a Size 4 mounting format, the Finder 7F.31.8.120.4250 is suitable for outdoor electrical cabinets, industrial automation systems and machinery control enclosures requiring dependable exhaust ventilation. Its ball-bearing fan construction and easily replaceable filter mat support long-term operation and straightforward maintenance.
Key Advantages
- Outdoor-rated reverse flow ventilation helps extract warm air from industrial electrical cabinets.
- 250/295 m³/h nominal free-flow airflow at 50/60 Hz supports effective enclosure cooling.
- 120 V AC operation provides compatibility with suitable industrial electrical supplies.
- 195/228 m³/h nominal airflow with an exhaust filter installed at 50/60 Hz.
- IP54 ingress protection helps protect against dust and splashing water when correctly installed.
- IK08 impact resistance supports durability in demanding environments.
- NEMA Type 3R classification supports suitable outdoor enclosure applications.
- Replaceable filter mat simplifies routine maintenance and servicing.
- Size 4 mounting format provides effective ventilation for industrial control cabinets.
- Ball-bearing fan mechanism supports dependable operation and extended service life.
- 56 dB(A) nominal acoustic noise level supports industrial ventilation applications.
- Snap-in installation helps reduce installation time and simplifies maintenance.
Key Features
- Finder 7F Series industrial enclosure filter fan.
- 7F.31 outdoor reverse flow configuration for exhaust ventilation.
- 120 V AC nominal supply voltage.
- 50/60 Hz operating frequency.
- 250 m³/h nominal free-flow airflow at 50 Hz.
- 295 m³/h nominal free-flow airflow at 60 Hz.
- 195 m³/h airflow with exhaust filter at 50 Hz.
- 228 m³/h airflow with exhaust filter at 60 Hz.
- 42 W nominal input power.
- 0.35/0.40 A current consumption at 50/60 Hz.
- Size 4 enclosure mounting format.
- 255 × 255 mm external face dimensions.
- 90.2 mm installation depth.
- IP54 ingress protection rating.
- IK08 mechanical impact protection.
- NEMA Type 3R outdoor enclosure classification.
- 56 dB(A) nominal noise level.
- Ball-bearing axial fan.
- 50,000-hour specified fan lifetime at 40 °C.
- Replaceable filter mat for convenient maintenance.
- Dark grey RAL 7000 housing.
Technical Specifications
- Manufacturer: Finder
- Series: 7F Series
- Model: 7F.31.8.120.4250
- Manufacturer part number: 7F.31.8.120.4250
- Product type: Outdoor reverse flow filter fan
- Ventilation function: Forced-air exhaust ventilation
- Airflow direction: Reverse flow / exhaust
- Rated supply voltage: 120 V AC
- Supply frequency: 50/60 Hz
- Operating voltage range: 0.8–1.1 × nominal voltage
- Free-flow airflow at 50 Hz: 250 m³/h
- Free-flow airflow at 60 Hz: 295 m³/h
- Airflow with exhaust filter at 50 Hz: 195 m³/h
- Airflow with exhaust filter at 60 Hz: 228 m³/h
- Nominal input power: 42 W
- Current consumption at 50 Hz: 0.35 A
- Current consumption at 60 Hz: 0.40 A
- Fan type: Axial
- Bearing type: Ball bearing
- Enclosure size: Size 4
- External face dimensions (H × W): 255 × 255 mm
- Installation depth: 90.2 mm
- Ingress protection: IP54
- Impact protection: IK08
- NEMA protection classification: Type 3R
- Filter maintenance: Replaceable filter mat
- Housing colour: Dark grey, RAL 7000
- Nominal acoustic noise: 56 dB(A)
- Specified fan lifetime: 50,000 hours at 40 °C
- Mounting type: Snap-in electrical enclosure mounting
- Installation environment: Indoor and outdoor electrical enclosures
- Compliance: RoHS, CE and UKCA
Reliable Exhaust Ventilation for Outdoor Electrical Enclosures
Industrial electrical cabinets frequently contain heat-generating components such as PLCs, power supplies, variable frequency drives, contactors and electronic control systems. In outdoor installations, internal heat generation can combine with elevated ambient temperatures and solar exposure, creating challenging operating conditions. The Finder 7F.31.8.120.4250 outdoor reverse flow filter fan helps manage these conditions by actively extracting warm air from the enclosure and promoting continuous ventilation.
The Finder 7F.31 Series is developed for outdoor reverse flow ventilation applications, combining IP54 ingress protection, IK08 impact resistance and NEMA Type 3R classification with practical installation and maintenance features. Its replaceable filter mat and ball-bearing fan support dependable operation, while the compact Size 4 construction facilitates integration into industrial electrical cabinets. For effective thermal management, the fan should be installed with an appropriately sized replacement-air opening or intake filter, taking account of enclosure heat load, ambient temperature and airflow restrictions.
Typical Applications
- Outdoor industrial electrical cabinets and control panels.
- Electrical distribution and switchgear enclosures.
- PLC and industrial automation control cabinets.
- Variable frequency drive and motor control enclosures.
- Outdoor machinery and equipment control systems.
- Industrial power supply and electronic equipment cabinets.
- Utility infrastructure and electrical control enclosures.
- Manufacturing and process automation installations.
- Machine-building and OEM electrical equipment.
- Industrial enclosure exhaust ventilation and thermal management systems.
