... metal rail 2.steel or aluminum 3. CE certificated Din RailA DIN rail or top-hat rail is a standardized 35 mm ... 7.5 mm top-hat rail (EN 50022, BS 5584, DIN 46277-3), several less widely used types of mounting rails ... , 15 mm x 5.5 mm (EN 50045, BS 6273, DIN 46277-2);7.5 mm wide top-hat rail (EN ... 50023, BS 5585);G-type rail (EN 50035, BS 5825, DIN 46277-1).