Siemens SCALANCE X-300 - Important Notes on Using the Device in Hazardous Areas; Pelv

Safety instructions
2.3 Important notes on using the device in hazardous areas
SCALANCE X-300
14 Compact Operating Instructions, 05/2016, A5E00982643-14
2.3
Important notes on using the device in hazardous areas
WARNING
WARNING - EXPLOSION HAZARD -
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE
NON-HAZARDOUS.
WARNING
Restricted area of application
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
WARNING
Restricted area of application
This equipment is suitable for use in Class I, Zone 2, Group IIC or non-hazardous locations
only.
2.4
PELV
Note
Safety extra-low voltage
The supply of the devices by PELV (Protective Extra Low Voltage) according to DIN VDE
0100
-410 or IEC 60364-4-41 is permitted when the generated nominal voltage does not
exceed the voltage limits 25 VAC or 60
VDC.