SK3237.100 Rittal TopTherm fan-and-filter unit 20/25 m/h 230 V 1~ 50/60 Hz

Why Choose the Rittal SK 3237.100 TopTherm Fan-and-Filter Unit?

The Rittal SK 3237.100 is a compact and reliable TopTherm fan-and-filter unit designed to provide efficient ventilation and heat dissipation for industrial electrical enclosures. Using proven axial fan technology, it draws filtered ambient air into the enclosure to help remove excess heat generated by electrical and electronic components.

The fan-and-filter unit incorporates diagonal airflow technology for improved pressure stability and more consistent air performance. This airflow pattern helps distribute cooling air more evenly within the enclosure, reducing localised hot spots and supporting dependable operation of PLCs, power supplies, relays and other heat-sensitive equipment.

Operating from a 230 V AC, single-phase, 50/60 Hz supply, the SK 3237.100 delivers an unimpeded airflow of 20 m³/h at 50 Hz and 25 m³/h at 60 Hz. The compact 116.5 × 116.5 mm format, 43 mm installation depth and standard IP54 protection make it suitable for space-conscious industrial enclosure ventilation.

Key Advantages

• Compact fan-and-filter unit for industrial enclosure ventilation.
• 20 m³/h airflow at 50 Hz and 25 m³/h at 60 Hz.
• IP54 protection as standard with the supplied chopped-fibre filter mat.
• Diagonal airflow technology provides improved pressure stability and even heat dissipation.
• Tool-free mounting supports fast and straightforward installation.
• Low power consumption of 12 W at 50 Hz and 10 W at 60 Hz.
• Supplied as a complete ready-to-install unit with filter mat.
• Compact design requires only 43 mm installation depth.

Key Features

• Rittal TopTherm fan-and-filter unit.
• 230 V AC, 1~, 50/60 Hz rated operating voltage.
• 20 m³/h unimpeded airflow at 50 Hz.
• 25 m³/h unimpeded airflow at 60 Hz.
• Airflow with one SK 3237.200 outlet filter: 15 m³/h at 50 Hz and 18 m³/h at 60 Hz.
• Airflow with two SK 3237.200 outlet filters: 16 m³/h at 50 Hz and 20 m³/h at 60 Hz.
• Axial shaded-pole motor.
• Power consumption of 12 W at 50 Hz and 10 W at 60 Hz.
• Maximum rated current of 0.065 A at 50 Hz and 0.07 A at 60 Hz.
• IP54 protection category.
• Operating temperature range of -15 to +55 °C.
• Supplied with chopped-fibre filter mat.

Reliable Ventilation for Industrial Electrical Enclosures

Fan-and-filter units provide a simple and energy-efficient method of removing excess heat from electrical enclosures when the surrounding air is cool and sufficiently clean. The Rittal SK 3237.100 draws filtered ambient air into the enclosure and promotes continuous circulation around heat-generating components, helping maintain suitable internal operating temperatures.

The TopTherm design uses a diagonal airflow path to improve pressure stability and distribute air more evenly than conventional arrangements. When used with a compatible outlet filter, the system creates a controlled ventilation path through the enclosure while the filter media helps reduce the ingress of airborne dust.

Typical Applications

• Industrial electrical control enclosures.
• Automation and PLC control panels.
• Machine-building electrical cabinets.
• Relay and power-supply enclosures.
• Switchgear and distribution cabinets.
• Small electronic equipment enclosures.
• Industrial applications requiring filtered forced ventilation.
• Control systems with low to moderate internal heat loads.