Siemens SENTRON 3KC0 Manual page 42

Connection
6.2 Connecting to the circuit
Procedure
1. Push the protective covers back so that the openings are exposed.
2. Ensure that the orientation of the bridging bar is correct.
3. Push the bridging bar into the lower openings of the box terminals.
4. Fix the bridging bar using a wrench.
As an alternative to a bridging bar, you can connect the two poles of sources I and II that
belong together using cables. The cables must be of the following minimum lengths:
● Size 1: Minimum length 220 mm
● Size 2: Minimum length 250 mm
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3KC0 manual transfer switching equipment
Manual, 09/2018, L1V30368969105-01