The PLC-OSC- 24DC/ 48DC/100 is a Solid State Relay PLC Interface Module with SPST-NO contact, zero voltage turn on switching mode and screw terminals. This DIN-rail-mount relay module features functional plug-in bridges, protection against polarity reversal and free-wheeling diode, integrated input circuit, efficient connection to system cabling using V8 adapter and RT III sealed solid-state relay. PLC interface consists of basic terminal block PLC-BSC with screw connection and pluggable miniature optocoupler for mounting on DIN-rail NS 35/7.5.