The enclosure apra Rail MB can be flexibly mounted on a cap rail or on a wall. This is easy because all components can be fitted without using any tools. By default, there are four different versions that differ concerning their side panels and their front side. All types are available in different dimensions. Boards can be installed at various positions depending on the chosen type. Several accessory parts like terminal covers or snap-in front panels allow you to design the apra Rail MB enclosure individually.