The Selektivitatsmodul SITOP PSE200U splits the load current on several 24 V-feeders on & monitors these reliable on overload & short circuit. Short term current peaks, for example through a high inrush current, the electronics to, feeders with longer overload switches you dead. This is even on high ohmic lines & with "more insidious" circuits
is ensured. Here are circuit breakers not or too late for triggering, even if the power supply could provide the necessary triggering current. The intact feeders provides the SITOPErganzungsmodul absolutely interrupt & reactionless further with 24 V & avoids a total loss if necessary the system.