The resistance heaters are used for preventing the formation of condensation and to ensure that the temperature does not drop below a specific minimum. They must only be operated in stationary, closed electric cabinets. For heaters without integrated thermostat, a separate thermostat is to be connected in series to control the room temperature. A hygrostat can be connected upstream in series to control the humidity in the cabinet.
Thermal control device (Thermostat)
The use of thermal controllers such as thermostats or hygrostats helps stabilise the temperature and humidity conditions inside the enclosure.
It also helps optimise the power consumption required to maintain good thermal conditions.
Install the thermostats in the top of the enclosure: this is the hottest part.