The enclosures Series MR../MX and STC.., 6- und 9-Module, can mount two different bases:
     BASE A)   for DIN Rail acc. to DIN EN 50022
     BASE B)   for Building Automation, Domotics, Wall Mounting
These Series are interchangeable.

By changing Base A with Base B, you change an item of Series MR../MX in an item of Sreies STC, and viceversa.
The interchangeability is shown in the table on the right:
VAT  I 1328 612 0152