Inputs and outputs:

5 predefined standard variants with 
4 current transformers, 4 voltage transformers, 
11 to 59 binary inputs, 9 to 33 binary outputs

Hardware flexibility:

Flexible, adaptable and expandable I/O quantity structure within the scope of the modular 
SIPROTEC 5 building blocks, 
1/6 expansion 
modules can be addedAvailable with large or small display or without display

Width of housing:

1/3 x 19'' to 2/1 x 19''