UNE-EN 60947-8:2005/A1:2007 Low-voltage switchgear and controlgear -- Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines (IEC 60947-8:2003/A1:2006).
2013UNE-EN 60947-8:2005/A2:2013 Low-voltage switchgear and controlgear - Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines
2007UNE-EN 60947-8:2005/A1:2007 Low-voltage switchgear and controlgear -- Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines (IEC 60947-8:2003/A1:2006).
2005UNE-EN 60947-8:2005 Low-voltage switchgear and controlgear -- Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines