Rittal TopTherm fan-and-filter units

The TopTherm fan-and-filter units use diagonal fan technology for better air throughput resulting in improved ventilation in enclosures and housings. This technology creates radial and axial ventilation, which means that the air outlet direction is not in the fan’s axial direction but diagonally to the outside. This favours an even distribution of air in the enclosure and avoids the formation of hot spots, claimed to result in 43% less energy consumption.

In addition to the flat design, the key benefits are the steeper curve and the higher pressure saddle. The higher pressure stability, when installed and under operating conditions, provides a higher and more constant airflow over a wide area. This increases the operating life for the filter mats without any loss of power.

With tool-free assembly, the units can be simply mounted and the airflow direction can be quickly changed. Electrical connections and maintenance, including filter mat replacement, can be conducted easily. During installation, the snap-on mounting system allows the easy insertion of the fan-and-filter units into the prepared mounting cut-outs.

The dimensions of the mounting cut-outs are identical with those of previous models. Spring-type terminals, into which the wires or conductor sleeves are inserted, replace conventional screw terminals when making electrical connections.

The units are available in outputs ranging from 20 to 700 m³/h and in a choice of 24 VDC or 115, 230 and 400 VAC three-phase supply voltages, with an EMC version also available.