Finder 7F.21.9.024.3100 – 7F Series Filter Fans – Reverse flow

Why Choose the Finder 7F.21.9.024.3100 Reverse Flow Filter Fan?

The Finder 7F.21.9.024.3100 is a compact and reliable 24 V DC reverse flow filter fan designed for effective ventilation and thermal management of industrial electrical cabinets, control panels and automation enclosures. As part of the Finder 7F Series enclosure ventilation range, this fan is specifically developed to extract warm air from electrical enclosures, helping protect sensitive components from excessive operating temperatures.

Featuring a reverse airflow configuration, the 7F.21.9.024.3100 provides forced-air exhaust ventilation rather than conventional intake airflow. Its integrated synthetic fibre filter helps maintain filtration of the ventilation airflow, while the compact plastic housing and replaceable filter mat simplify installation and maintenance. The unit is designed for indoor electrical enclosure applications and provides IP54 protection when correctly installed.

With a 24 V DC supply, a nominal free-flow air volume of 100 m³/h and a rated power consumption of 7 W, the Finder 7F.21.9.024.3100 is suitable for electrical cabinets containing PLCs, power supplies, motor controllers and industrial automation equipment. Its Size 3 mounting format and compact construction enable straightforward integration into electrical enclosure sidewalls.

Key Advantages

• Reverse flow exhaust ventilation helps remove accumulated heat from industrial electrical enclosures.
• 100 m³/h nominal free-flow air volume supports effective cabinet thermal management.
• 24 V DC operating voltage is suitable for compatible industrial control power systems.
• 7 W rated power consumption provides efficient forced-air ventilation.
• IP54 protection rating helps protect enclosure interiors against dust and water ingress when correctly installed.
• Replaceable synthetic fibre filter mat simplifies routine servicing and maintenance.
• Compact Size 3 construction supports installation in electrical cabinets with limited mounting space.
• Low acoustic noise makes the fan suitable for industrial control panel applications.
• Snap-in mounting arrangement helps reduce installation time.
• Durable plastic housing provides a practical solution for long-term industrial enclosure ventilation.

Key Features

• Finder 7F Series industrial filter fan.
• 7F.21 reverse flow configuration for exhaust ventilation.
• 24 V DC nominal supply voltage.
• 100 m³/h nominal free-flow air volume.
• 7 W rated electrical power.
• Size 3 enclosure mounting format.
• 177 × 177 mm nominal mounting cut-out.
• 209 × 209 mm external face dimensions.
• 80.2 mm overall depth.
• IP54 protection rating according to EN 60529.
• Replaceable synthetic fibre filter mat.
• G3 filtration class according to EN 779.
• 45 dB(A) nominal acoustic noise level.
• Plastic housing with RAL 7035 light grey finish.
• Snap-in sidewall mounting for electrical cabinets.
• Indoor enclosure ventilation design for industrial applications.

Reliable Thermal Management for Industrial Electrical Enclosures

Electrical cabinets containing power supplies, PLCs, motor drives, contactors and other automation components generate heat during normal operation. Without adequate ventilation, internal temperatures can rise and affect equipment reliability, component lifespan and operational performance. The Finder 7F.21.9.024.3100 reverse flow filter fan helps manage these conditions by actively extracting warm air from the enclosure and supporting controlled airflow through the cabinet.

The Finder 7F.21 Series is designed for reverse flow operation, making it suitable for applications where exhaust ventilation is preferred over conventional filtered air intake. Its compact construction, low-noise operation and replaceable filtration system support practical integration into industrial control cabinets. When paired with a suitably sized replacement-air opening or filter arrangement, the fan helps maintain effective airflow and dependable enclosure thermal management.

Typical Applications

• Industrial electrical cabinets and control panels.
• PLC and industrial automation enclosures.
• Electrical distribution and switchgear cabinets.
• Motor control panels and variable frequency drive enclosures.
• 24 V DC industrial control systems.
• Machine-building and OEM electrical equipment.
• Industrial power supply and electronic equipment cabinets.
• Packaging and manufacturing machinery control panels.
• Material handling and conveyor automation systems.
• Electrical enclosure ventilation and thermal management installations.