6.4 Power supply 100 to 240VAC / 110 to 250VDC
Notes on the power supply
WARNING
Danger from line voltage
The supply voltage for the devices listed is 100 to 240VAC / 110 to 250VDC.
This device can only function correctly and safely if it is transported, stored, set up, and installed
correctly, and operated and maintained as recommended.
Terminal blocks may only be connected and disconnected by a qualied electrician.
Connect or disconnect power supply cables only in the de-energized state.
WARNING
Devices with a 100 to 240 V AC/110 to 250 V DC power supply do not have an approval for
hazardous areas.
Devices with a 100 to 240VAC / 110 to 250VDC power supply are not approved for use in
hazardous areas according to ATEX, IECEx, FM and UL HazLoc.
WARNING
Restricted access area
• Operate the device including the power supply units in a restricted access area according to
IEC 62368-1.
NOTICE
Securing cables with dangerous voltage
• Make sure that the connector cannot be released accidentally by pulling on the connecting
cable.
• Lay the cables in cable ducts or cable channels and secure the cables, where necessary, with
cable ties.
Information on the power supply
There are two possibilities for connecting the power supply:
• Via a C14 IEC plug (100 to 240VAC)
• Via a DC terminal block (110 to 250VDC)
The connections for the power supply are located on the rear of the device.
The two connection options are next to each other. The unused connection is protected
against use by a sliding cover. When shipped, the IEC plug is available.
The power supply is either single or redundant, depending on the device version.
Connecting up
6.4Power supply 100 to 240VAC / 110 to 250VDC
SCALANCE XR-300
64 Operating Instructions, 03/2023, C79000-G8976-C586-02