This Order, made under s.269P of the Customs Act 1901, declares that certain passenger-train power modules (tariff classification 8537.20.90; specified voltage and impedance) are to which item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 4 June 2009 until revoked (s.269SC/s.269SD). Mechanically, it changes the tariff treatment applied at import for those specific modules, so importers (and their customs brokers) bear the compliance task of using this classification and may pay different duties as a result.