The 2020 revision introduced mandatory color-coding for vacuum circuits (Red = unsafe, Green = safe). Pirated black-and-white scans obscure these critical safety distinctions.
Avoid sites offering the PDF for $19.99. They are invariably using the obsolete 2007 version or a corrupted scan missing Annex ZA. din en 13155 pdf exclusive
: The official source for DIN EN 13155:2022-03 in both German and English. din en 13155 pdf exclusive