Siemens Simatic ET 200S Operating Instructions Manual page 73

Figure 4-10
Mount pluggable bridge
1. Remove the labels from the additional terminals.
2. Position the pluggable bridge between both voltage groups that are to be connected.
3. If necessary, repeat step 2.
4. Replace the labeling strips.
You can see which bridges are plugged by means of the inserted labeling strip.
ET 200S
Operating Instructions, 12/2005, A5E00515771-03
4.6 Remove / mount pluggable bridges for additional terminals
Remove bridge
Assembling
4-15