SIMATIC S7-300, Front connector with screw contacts, 40-pole SIMATIC S7-300, Front connector with screw contacts, 40-pole SIMATIC S7-300, Front connector with screw contacts, 40-poleSIMATIC S7-300, Front connector with screw contacts, 40-pole No Product available SIMATIC S7-300, Front connector with screw contacts, 40-poleSIMATIC S7-300, Front connector with screw contacts, 40-poleNo Product available removeadd