IEC 60601-1:2005+A1:2012 contains requirements concerning basic safety and essential performance that are generally applicable to medical electrical equipment. For certain types of medical electrical equipment, these requirements are either supplemented or modified by the special requirements of a collateral or particular standard. Where particular standards exist, this standard should not be used alone. This consolidated version consists of the third edition (2005) and its amendment 1 (2012). Therefore, there is no need to order the amendment in addition to this publication. This document includes the contents of the corrigenda 1 (2006) and 2 (2007), the contents of the corrigendum to Amendment 1 (2014), as well as the interpretation sheets 1 (2008), 2 (2009) and 3 (2013).