The Phoenix Contact ZBN 18:UNBEDRUCKT is a white, unlabeled Zack marker strip designed for easy identification in terminal block assemblies. It features five individual labels, each measuring 18 by 5 millimeters, which can be customized using tools like the CMS-P1 plotter or Plotmark system. This marker strip is designed to snap securely onto terminal blocks that are 18 millimeters wide, providing a neat and organized way to label connections. Distributed by BSP Automation, it offers a practical solution for clear and flexible terminal marking in various industrial settings.