Product Details Supplier Info More products

Rittal has redeveloped the TopTherm fan-and-filter unit to use diagonal technology, which creates an even distribution of air and avoids the formation of hot spots, improving ventilation in housings.

Diagonal technology means that the air outlet direction is not, as previously, in the fan’s axial direction but instead diagonally to the outside.

Tests have shown energy savings of 43 per cent, while still having a higher and more constant air flow over a wide area than competitor models.

In addition to the flat design, it possesses a steeper curve and higher pressure saddle, delivering higher pressure stability.

This in turn means an increased operating life for the filter mats without having to settle for any loss of power in return.

Rittal has conducted extensive tests that allow a direct comparison between the old and new technologies, in order to demonstrate the performance of the new fan-and-filter units.

A conventional fan-and-filter unit and a new TopTherm unit were installed in each of two identical test setups.

The enclosures used were equipped with a heater and temperature sensors.

Both fan-and-filter units were controlled by a digital enclosure temperature controller during the one-and-a-half-month test period.

Results showed that running time of the TopTherm filter was cut by around 40 per cent and that power consumption was thus around 43 per cent below the conventional level.

Through completely tool-free assembly, the fan-and-filter units can be simply mounted and the air flow direction can be quickly changed.

Electrical connections can be made easily and maintenance, including filter mat replacement, is conducted without a hitch.

During installation, the snap-on mounting system allows quick insertion of the fan-and-filter units into the prepared mounting cut-outs.

The dimensions of the mounting cut-outs are identical to those of previous models.

Spring-type terminals, into which the wires or conductor sleeves are inserted, replace conventional screw terminals when making electrical connections.

A new release mechanism lets the louvered grille fold down forwards during maintenance work, snapping into position at an opening angle of around 70deg.

This leaves the user both hands free to replace a filter mat, leading to less additional maintenance and reduced costs.

The procedure is the same with the outlet filters.

To improve performance, several fan-and-filter units can be seamlessly bayed to one another without leaving any gaps.

TopTherm fan-and-filter units are available in various outputs, ranging from 20m3/h to 700m3/h.

There is also a choice of 24V (DC) or 115V, 230V and 400V three-phase (AC, 50/60Hz) supply voltages.

Besides the standard fan-and-filter units, an EMC version is also available.

Rittal is your top supplier worldwide for innovative enclosure and housing technologies from A to Z.

  • 10,000 committed staff worldwide
  • 19 high-tech-production facilities around the world
  • 60 international subsidiaries
  • 22 delivery centres in England, more than 150 worldwide
  • More than 70 international agencies
  • More than 10,000 standard products available immediately

View full profile