The Rittal SK 3361500 is a wall-mounted cooling unit of the Blue e Series, designed for enclosure climate control in industrial applications. It features a total cooling capacity of 0.82 kW at 50 Hz and 60 Hz in L35 L35 operation, with cooling capacity decreasing to 0.59 kW (50 Hz) and 0.6 kW (60 Hz) in L35 L50 operation. The unit is designed for a rated operating voltage of 230 V, 1~, 50/60 Hz, making it suitable for standard power networks in Europe and other regions. The rated power consumption is 0.42 kW at 50 Hz and 0.46 kW at 60 Hz in L35 L35 operation, enabling efficient energy use. The coefficient of performance (EER) is 1.95 (50 Hz) and 1.78 (60 Hz), indicating energy efficiency under real operating conditions. The unit is constructed from sheet steel and has a RAL 7035 color, providing a robust and industrially appropriate appearance. Dimensions are 280 mm (width) × 550 mm (height) × 280 mm (depth), allowing for compact installation on walls or in enclosures.

Applications
This cooling unit is designed for industrial environments where controlled temperature inside the enclosure is required to protect electronic components from overheating. It is particularly suitable for systems operating within a temperature range of 10 °C to 55 °C. The maximum operating temperature at 60 Hz is 52 °C, enabling flexible use in various climate zones. The storage temperature range of -40 °C to 70 °C demonstrates the unit’s high robustness even under extreme storage conditions. Temperature control is managed via an e-Comfort controller, factory-set to +35 °C, with an adjustable range of 20 °C to 52 °C, allowing precise adaptation to specific system requirements.

Functions and Features in Detail
The unit includes a condenser with hydrophobic RiNano coating, which reduces condensation formation and simplifies maintenance. The airflow rate is 550 m³/h in the external circuit and 230 m³/h in the internal circuit, ensuring efficient air circulation within the enclosure. The protection rating IP is IP 34 for the external circuit and IP 54 for the internal circuit, as per EN 60 529, providing high protection against dust and splashing water. The NEMA protection rating corresponds to UL Type 12, confirming suitability for industrial environments. The unit is pre-wired with a plug-in terminal block, simplifying installation. The delivery includes a drilling template and mounting hardware to facilitate installation.

Technology Explained Simply
The cooling unit uses refrigerant R-513A with a quantity of 0.28 kg. The refrigerant has a Global Warming Potential (GWP) of 631, complying with F-gas regulation requirements. The CO₂ equivalent is 0.18 t, quantifying environmental impact. The maximum operating pressure is 28 bar, ensuring system safety under operating conditions. The pre-fuse is equipped with a 10 A fuse/automatic circuit breaker to protect the electrical connection. Starting currents are 6 A (50 Hz) and 9.6 A (60 Hz), which must be considered when dimensioning the power supply.

Compatibility and Accessories
The unit is compatible with various accessories that extend its functionality. These include an electric condensate evaporator, which reduces condensation inside the enclosure, and metal filters for cooling units aluminum, which improve air quality. For networking, an IoT interface is available, connectable via a Blue e IoT adapter to cooling units with 500 W cooling capacity or higher. Additionally, VX roller 8618420 and TS roller for TS, SE, PC are available to facilitate installation. Filter mat for cooling unit air/air heat exchanger 3 pcs and condensate hose 10 x 1.5 x 10 m length support maintenance and operation. A door position switch can be integrated for monitoring the enclosure door.

Installation and Mounting
Mounting is done on a wall or inside an enclosure using the included drilling template and mounting hardware. The plug-in terminal block enables quick and secure electrical connection. Dimensions of 280 mm (W) × 550 mm (H) × 280 mm (D) provide sufficient space for installation in standard enclosures. The IP 34 (external circuit) and IP 54 (internal circuit) protection ratings ensure safe operation in industrial environments with increased dust and moisture exposure.

Operational Advantages
The Rittal SK 3361500 offers high energy efficiency with a coefficient of performance (EER) of 1.95 (50 Hz) and 1.78 (60 Hz). The hydrophobic RiNano coating on the condenser reduces condensation and minimizes maintenance. Pre-wired connections and included mounting materials accelerate installation. Network capability via the IoT interface enables remote monitoring and control, enhancing operational reliability. The robustness of the unit, confirmed by IP 34/54 and UL Type 12 ratings, makes it a reliable solution for industrial applications.