This Tariff Concession Order declares that a specific product—“residual current device (RCD), DIN rail mount” (tariff heading 8536.50.99)—is eligible for item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 from 5 Sept 2008. Mechanically, it applies the Schedule 4 concession to those imported RCDs (changing how customs duty is calculated). The decision was made by a delegate of the Chief Executive Officer under s.269P and can be revoked under ss.269SC–269SD; importers must classify goods correctly to rely on the concession.