EN 60715-2001 低压开关设备和控制设备的尺寸.开关设备和控制设备中电气器件的机械支承用轨道上的标准化安装 IEC 60715-1981+A1-1995
Dimensions of Low-Voltage Switchgear and Controlgear - Standardized Mounting on Rails for Mechanical Support of Electrical Devices in Switchgear and Controlgear Installations