PSSu BS-R 2/8 C-T 314655 These modules are simply inserted on to the base modules and are easy to change when making system adjustments. PSSu, base module for supply voltage modules, infeed module supply, infeed periphery supply, infeed C-rail, 2-row, 4 connection levels, 8 terminals, spring-loaded connection, forincreased environmental requirements. Only to refresh the supply voltage and to form supply groups