Wieland blackwhite st17st18 connectors with strain relief wieland 9373233500 this white st18 3 plug with strain relief from wieland is a 3 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 screw terminal and supplied fully assembled live parts are protected against accidental contact when connected or unconnected wieland 9373233500 3 pin male