IEC 60570:2003+A1:2017 applies to track systems for ordinary interior use with two or more poles and with provision for earthing (Class 1), with a rated voltage not exceeding 440 V between poles (live conductors), rated frequency not exceeding 60 Hz and a rated current not exceeding 16 A per conductor for the connection of luminaires to the electrical supply. This consolidated version consists of the fourth edition (2003) and its amendment 1 (2017). Therefore, no need to order amendment in addition to this publication.