With the PISA-fuse module is for the first time in addition to a pure current monitoring of the individual outputs and the 24V power supply voltage is monitored and protected against voltage dips. A protective shield in the input stage of the PISA module functions as a variable valve and can only so much power that the supply voltage is not under 21 V sinks. This is a safe and uninterrupted supply for sensitive loads possible if this to the same power supply as the PISA module can be connected. For consumers, the insensitive to short voltage dips respond or the self-the cause of error on the 24 V supply, to be connected to one of the four current monitored outputs of the PISA module.This text is machine translated.