Phoenix Contact QUINT4-PS/12-24DC/24DC/1.3/SC Manual page 30

14.3 Position-dependent derating
The fanless convection-cooled power supply can be snapped onto all DIN rails according to EN 60715.
The power supply should be mounted horizontally for heat dissipation reasons (input connection terminal blocks
facing downward). Please observe the derating for any mounting other than the normal mounting position. Reduce
the output power based on the prevailing ambient temperature.
The recommended output power for different mounting positions and ambient temperatures can be found in the
characteristic curves below.
Exceeding these values will reduce the service life of the power supply.
14.3.1 Normal mounting position
14.3.2 Rotated mounting position 90° Z-axis
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