This Tariff Concession Order (under s.269P of the Customs Act 1901) applies item 50 of Part III, Schedule 4 of the Customs Tariff Act 1995 to imported passenger-train power units (tariff heading 8504.40.90) that contain a cooled power semiconductor, weigh no more than 250 kg and operate at 1,500–2,100 V DC, effective 9 Sept 2010. Mechanically, it changes the tariff treatment for those specific imports while in force until revoked under ss.269SC–269SD; importers meeting the description are the parties who experience the altered duty outcome.