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Factory default settings
The temperature and humidity controllers are preset at the factory.
Mechanical temperature controller
Electronic temperature and humidity controller
Adjustment during operation
At the place of operation of the switchgear, the integrated temperature and humidity controllers must be
adjusted to the local temperature and/or humidity conditions in the application area of the switchgear panels
by the respective operator.
Installation in the panel
The temperature and humidity controllers are installed top-left inside the switching-device compartment,
directly at the side of the vertical wiring duct.
Fig. 396: Installation of the electronic temperature and humidity controller
139-2021.9 / 07
in the switching-device compartment
NXAIR M
Temperature [°C]
approx. +30
approx. +30
Panel heater
Humidity [% r h]
─
approx. 70
239
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