Connecting
6.4 Power supply
SCALANCE X-300
132 Operating Instructions, 10/2010, A5E01113043-10
6.4.2.2 Connecting the power supply 100 ...240 V AC
Connecting the power supply 100...240 V AC via the 2-pin terminal block
There are devices with single (1 x 100...240 V) or redundant power supply (2 x 100...240 V).
The cable outlet can be to the front or rear depending on the device type.
● The power supply is connected using a 2-pin plug-in terminal block.
● The power supply can be connected redundantly. Both inputs are isolated. There is no
distribution of load. When a redundant power supply is used, the power supply unit with
the higher output voltage supplies the IE Switch X-300 alone.
● The two power inputs are always non-floating.
Terminal block assignment (2-pin)
Table 6- 5 Pin assignment of the power supply 100 ...240 V AC
Pin number Assignment Labeling
Pin 1 L1 (100...240 V)
Pin 2 N
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