BS PD IEC TR 60297-3-1:2023 PDF
Mechanical structures for electrical and electronic equipment. Dimensions of mechanical structures of the 482,6 mm (19 in) series-Technological schemes and applications
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Mechanical structures for electrical and electronic equipment. Dimensions of mechanical structures of the 482,6 mm (19 in) series-Technological schemes and applications
BSI Group , 02/15/2023