Rittal unpacks with new NEMA 3R/4 cooling units

Smart cooling, even in extreme weather conditions

Cooling technology for outdoor applications must always work reliably, even in extreme heat and cold or in humid and dusty conditions. But the demands are even higher: plant builders and operators expect state-of-the-art cooling systems, maximum energy efficiency, smart networks, the highest international certifications and global service. Rittal's NEMA 3R/4 cooling units meet all these requirements. Moreover, these newcomers also score with their IP 56 protection, energy-efficient Blue e technology, smart IoT capability and cULus Listed seal of approval. 

Outdoor installations for wastewater treatment, solar and alternative energy applications, and infrastructure projects such as toll stations, often cause designers and operators a great deal of headaches. After all, the associated control and switchgear installed outdoors must also operate flawlessly in extreme weather conditions. To ensure that control cabinet technology can always be used safely, Rittal has developed the NEMA 3R/4 cooling units. They ensure optimum protection and reliable operation of the technology even in rain, snow and ice formation (NEMA 3R) or wind-driven dust and rain, spray and water jets (NEMA 4).

The new sheet steel cooling units are available in 4 power ratings from 500 to 2500 W. They can be used in a temperature range from -20 °C to +50 °C. If the outside temperature is below +10 °C, the unit automatically switches to an operation in which only the indoor fan is active. The NEMA 3R/4 cooling units feature UL Type 3R/4, UL Type 12 and IP 56 protection classes.

Energy efficiency and IoT capabilities

The new units are available as standard as energy-efficient Blue e wall-mounted cooling units with integrated e-Comfort controller, RiNano coating on the condenser and electric condenser evaporation (from 1000 W). In combination with the IoT interface and Blue e adapter, Rittal also enables intelligent networking and digitalization of the Blue e cooling units. Thus, the devices can be easily implemented in Industrie 4.0 environments without interfering with the automation logic. Configuration and commissioning of the IoT interface is carried out quickly, easily and without programming via the integrated Web server. This enables condition monitoring of up to 10 cooling units in the master/slave network. For example, alarm and system messages and the indoor and ambient temperature of the control cabinet can be displayed.

Simplified licensing and global service

In addition to the cULus FTTA, CE and EAC certifications, the new cooling units also carry the cULus Listed seal of approval. This means that international machinery and equipment manufacturers targeting the US and Canadian markets will find it much easier to obtain approval from UL (Underwriters Laboratories) and CSA (Canadian Standards Association). Naturally, this will lead to significant cost savings. In addition, Rittal always provides particularly fast service thanks to its local presence and more than 1,000 well-trained technicians worldwide. More information at www.rittal.com.