Siemens SITOP PSU300S Manual page 20

Mounting/removal
Use in hazardous zones
If the device is to be used in a hazardous zone (Ex II 3G Ex nA nC IIC T3; Ex II 3G Ex nA
nC IIC T4) it must be installed in a distribution box with degree of protection IP54 or higher.
20
WARNING
SITOP PSU300S
Manual, 12.2016, C98130-A7587-A1-7-7629