ELECTRONIC PROTECTION CONCEPT FOR 24VDC SYSTEMS More cost-effective than current solutions In addition, industry's first input voltage monitor included

sensitive loads The better concept for protecting PISA – Unique System P ro t e c t i o n C o n c e p t PISA is a new and innovative concept for current distribution and protection of branch circuits. It features a comprehensive protection package for 24VDC loads which are supplied from one power supply. The PISA module is clearly superior to traditional miniature circuit breakers and also provides better protection than costly electronic fuses. The PISA module can also be used to build NEC Class 2 circuits. PISA is unique In addition to the over-current protection of the individual outputs,...

very cost effective solution PISA permits 100% current for your application With conventional protection designs, the power supply must be oversized to allow for the “extra current” which is needed for a fast trip in case of a fault in the system. Electronic fuses usually require a tripping current, which is 1.5 to 1.8 times higher than the rated current. For miniature circuit breakers, the factor is even higher than those values. If this sizing not taken into account, shutting down the faulty branch is delayed and a drop of the supply voltage is most likely. The PISA module has clear benefits...

Output Terminals Red Failure LEDs indicates the channel causing the problem ON / OFF and Reset Button Signal Connector - Synchronization - Output-OK relay - ON / OFF signal input - Remote reset Input Status LED indicates a low input voltage Input Terminals The PISA protection module has four output channels to which the current is distributed. Sensitive loads such as PLCs are connected directly to the power supply. Less critical loads that are not affected by short voltage interruptions or that could even be the cause of a fault on the 24V supply voltage are connected to one of the four outputs...