The Siemens 3RK1902-1BA00 is a field-attachable M12 connector for PROFIBUS networks — angled cable outlet, B-coded, 5-pole, with screw terminals. No terminating resistor is integrated, so you add one at the bus end if needed. The IP67 rating means the connector body and the mated interface withstand washdown — suitable for food-and-bev lines, packaging cells, or any zone where hoses are used. The housing is zinc diecast, nickel-plated; the contact is brass with gold plating. Cable entry accepts 6–8 mm diameter cable, secured by a pressure screw and pinch ring.
The M12 x 1 thread with B-coding mates directly to standard PROFIBUS device ports and junction boxes. The angled outlet keeps the cable profile low against the panel or machine frame — useful in tight enclosures or along cable trays where a straight plug would snag. Screw terminals accept flexible conductors up to 0.75 mm². The 100 mating-cycle mechanical life is typical for field-attachable M12s; plan for occasional replacement if the connector is frequently disconnected during line changeovers.