ABB 6517U-101-500 Manual Del Usuario página 20

Important information
1.1.1.12
Heating-up
The dimmer heats up during operation because part of the
connected load is lost and converted into heat. The
specified rated power is designed for dimmer installation in
a solid masonry wall.
The connected load must always be reduced when several
dimmers are installed one below the other or when other
heat sources cause additional heating. In intensely heated-
up rooms, the maximum connected load must be reduced
according to the diagram (see figure 3).
At an ambient temperature of 50 °C, the allowed power is
reduced to 57%, at 60 °C to 28%.
Caution!
The connected load must be reduced accordingly in
order to avoid the risk of destruction due to
overheating!