Siemens SIMATIC ET 200SP Manual page 50

The following values apply to channel currents of 2 A to 4 A for the utilization category AC-12
(IEC 60947-5-1):
Figure 5-2
Note that the rms values are in effect for the channel and total currents.
Note
Loads with PTC thermistor properties
For PTC thermistors up to 4 A continuous current and power ratings above 100 W (e.g.
infrared sources), you must observe the significantly higher inrush current.
Ensure that the switch-on peak current does not exceed 15 A.
To reduce the inrush current, preheat the load or use the function "Output filter with phase
control".
This slowly increases the switch-on duration of the load and the inrush current of the load
being heated is limited.
Use an output filter time of 5 s or a preheating with 25 ° phase control, for example, for a
PTC thermistor with a power rating of 900 W and an estimated factor 10 of the inrush current
overshoot.
If you want to connect multiple PTC thermistors per module at the same time, use the
"Startup delay" function.
By doing so, you connect the channels at different times so that the inrush current
overshoots do not overlap and the fuse is not overloaded.
DQ 4x24..230VAC/2A HF digital output module (6ES7132-6FD00-0CU0)
Manual, 02/2018, A5E42404845-AA
Derating depending on ambient temperature - channel current 4 A
Technical specifications
49