Siemens SIPLUS HCS Series Operating Instructions Manual page 51

Power rating of the POM4220 Flexible, 45 V, 70 V and 110 V
Figure 4-10
Temperature derating with double frame
Note
With stacked mounting of the racks a temperature derating of 10 °C is required.
SIPLUS HCS4200 PROFINET/PROFIBUS DP
Operating Instructions, 07/2019, A5E35066204A/006
Power rating of the POM4220 Flexible, 45 V, 70 V and 110 V
Application planning
4.5 Power ratings
49