Wieland blackwhite st17st18 connectors with strain relief wieland 9373245530 this black st18 5 plug with strain relief from wieland is a 5 pin male connector which has been designed for general wiring distribution and is suitable for secure installation of lighting systems or light fittings where space is limited equipped with a strain relief clamp for round cable plus l1 n earth conductors wieland 9373245530 5 pin male compact connector with strain relief black