Siemens SIMATIC ET 200SP HA System Manual page 110

Technical specifications
11.5 Information on insulation, protection class, degree of protection and rated voltage
Table 11-6
Rated voltage
24 V DC
Static value: Creation as functional extra-low voltage with safe electrical isolation according to
1
EN / IEC 60364-4-41
2 Dynamic value: Including ripple, e.g. as in the case of three-phase bridge power rectification
110
Rated voltage for operation
Tolerance range
19.2 to 28.8 V DC
1
18.5 to 30.2 V DC
2
Modules for devices in a hazardous area
System Manual, 04/2021, A5E50165138-AA