Siemens SINAMICS S120 Device Manual page 483

Note
Installation of a fan in the top hat
In the Line Connection Module with option L43 and in the Booksize Base Cabinet, a fan is
installed in the top hat for enclosure NEMA1 filtered (IP23), IP43 and NEMA12 ventilated
(IP54).
Note
Installing the canopy or top hat at an early stage
We recommended that you attach the canopy or top hat at an early stage to prevent foreign
bodies from entering the cabinet units.
Figure 8-51
If the degree of protection of the Cabinet Modules is to be increased, the additional top hats
and filter media are delivered separately.
The top hats are flush with the cabinets at the side and front and have a recess at the rear
so that air can escape even if the cabinet is wall mounted. Air escapes from the front and
back.
The top hats are easily installed and filter media easily changed from outside the cabinet. Air
escapes from the front and back. Compliance with the increased degree of protection
requires intact filter media, which must be replaced on a regular basis according to the
prevailing environmental conditions.
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
8.39 M23/M43/M54, enclosure IP23 (NEMA1 filtered)/IP43/IP54 (NEMA12 ventilated)
Cabinet with top hat is 16" (400 mm) higher
Options
483