DIN 49075-2-1989 安装在不同于 φ45 mm 孔径的不带规定插入件的安装盒开关装置、电气插座及其附件用盖板.第2部分:主要尺寸
Cover plates for use with switches, socket-outlets and other accessories intended to be mounted into mounting boxes with openings other than of diameter 45 mm without inserts; main dimensions
This standard specifies dimensional requirements for cover plates for use with accessories according to DIN VDE 0620, DIN VDE 0632 and DIN VDE 0632 part 1 to be mounted into mounting boxes and without inserts.#,,#