In addition to the electronics for double voltage operation, modifications included the provision for the installation of the full variety of train protection systems in use in Europe, and the lowering of the roof by 105 mm to fit the vehicle in the international UIC 505-1 loading gauge.
除了双电压操作的电子设备，185型的变化还包括提供在欧洲使用的各类列车保护系统的安装，以及将车顶高度降低105毫米，以适应在国际UIC505-1中规定的车辆负载限界。