Siemens PSU300B Manual page 68

Applications
9.2 Parallel connection for redundancy
Figure 9-3
You can find additional information at:
SITOP PSE202U manual (http://support.automation.siemens.com/WW/view/en/42248598)
68
Redundant configuration with two power supplies and two SITOP PSE202U redundancy
modules
SITOP PSU300M/300B
Manual, 11.2014, C98130-A7574-A2-2-7629