SK3241.900 Rittal Blue e+ EC fan-and-filter unit 272 m³/h, 100 V-240 V, RAL 7035

Why Choose the Rittal SK 3241.900 Blue e+ Filter Fan?

The Rittal SK 3241.900 is a compact and energy-efficient Blue e+ EC filter fan unit designed for reliable cooling of electrical enclosures. It combines advanced EC motor technology with intelligent control features to deliver consistent airflow while reducing energy consumption.

With a wide input voltage range of 100–240 V AC, this unit is suitable for global applications and modern automation environments. Its integrated interfaces enable monitoring and control, making it ideal for Industry 4.0 installations and smart enclosure systems.

Delivering airflow of up to 272 m³/h with a pleated filter, and scalable performance up to 1,160 m³/h depending on system configuration, the SK 3241.900 ensures effective thermal management for small to medium-sized enclosures.

Key Advantages

• Energy-efficient EC fan technology reduces operating costs.
• Wide voltage range (100–240 V AC) for global compatibility.
• Compact design ideal for smaller enclosures.
• Supports IoT monitoring and smart control integration.
• Improved airflow stability using diagonal fan design.
• Tool-free installation for fast setup and maintenance.

Key Features

• Rittal Blue e+ fan-and-filter unit.
• Advanced electronically commutated (EC) motor.
• Integrated pleated filter supplied as standard.
• 0–10 V / PWM input and ModBus (RS485) interface.
• Automatic filter monitoring and maintenance indication.
• Optimised louvre grille for airflow and enclosure protection.
• Snap-fit mounting with optimised detent hooks.

Technical Specifications

• Manufacturer: Rittal
• Series: Blue e+
• Model: SK 3241.900
• Product type: EC filter fan unit
• Airflow (with pleated filter): approx. 272 m³/h
• Airflow range: 175 – 1,160 m³/h (system dependent)
• Voltage: 100–240 V AC, single phase
• Frequency: 50 / 60 Hz
• Power consumption: approx. 19.8 W
• Current: approx. 0.3 A
• Protection rating: IP54–IP56 depending on configuration
• Dimensions (W × H × D): 255 × 255 × 137.5 mm
• Installation depth: approx. 116.5 mm
• Operating temperature: -25 °C to +55 °C
• Noise level: approx. 54 dB(A)
• Weight: approx. 2.1 kg

Efficient Cooling for Compact Enclosures

The SK 3241.900 ensures stable internal temperatures by delivering filtered airflow into electrical enclosures. Its diagonal fan technology improves pressure stability and ensures even air distribution, reducing hotspots and enhancing system reliability.

The integrated pleated filter improves airflow efficiency while preventing dust ingress, helping to maintain clean internal conditions and reduce maintenance requirements in industrial environments.

Typical Applications

• Small to medium industrial control panels.
• Automation and machinery enclosures.
• IT and network cabinets.
• Telecommunications equipment housings.
• Energy and power distribution systems.
• OEM machine building applications.

Trusted by Panel Builders and Engineers

Rittal Blue e+ filter fan units are widely trusted for delivering energy-efficient, intelligent and reliable enclosure cooling across industrial and IT environments.