Customer terminal block -X55 is the interface with the I/O devices and marshals a range of cabinet-internal signals to a central terminal block module mounted in the lower part of the cabinet.

It can be used for Motor Modules in the chassis format as well as together with options K90 (Control Unit CU320-2 DP) or K95 (Control Unit CU320-2 PN) for Basic Line Modules, Smart Line Modules, Active Line Modules and Booksize Cabinet Kits.