Phoenix Contact 2900262 A 6.2mm diameter programmable logic controller (PLC) basic terminal block is designed for input functions, featuring a push-in connection system that does not require relays or solid-state relays, and can be mounted on a DIN rail with a depth of NS 35/7.5. This terminal block also provides sensor supply voltage distribution (BB), one N/O contact, and an input voltage of 24 volts DC.