Enhance organization and clarity with the PHOENIX CONTACT part BN WH marker for terminal blocks. This stud-shaped marker in white is easily labeled using a marker pen and is designed to plug in for seamless installation. Specifically intended for terminal blocks with a width of 4.2 mm, this marker provides a spacious lettering field size of 4 x 4 mm for clear identification. Improve efficiency and accuracy in your terminal block labeling system with the BN WH marker from PHOENIX CONTACT.