Siemens SCALANCE XR-300WG Series Operating Instructions Manual page 28

Installation
4.1 Safety notices for installation
When used in hazardous environments corresponding to Class I, Division 2 or Class I,
Zone 2, the device must be installed in a cabinet or a suitable enclosure.
Safety notices for use according to ATEX and IECEx
If you use the device under ATEX or IECEx conditions you must also keep to the following
safety notices in addition to the general safety notices for protection against explosion:
To comply with EC Directive 2014/34/EU (ATEX 114) or the conditions of IECEx, this
enclosure or cabinet must meet the requirements of at least IP54 in compliance with EN
60529.
If the temperature of the cable or housing socket exceeds 70 °C or the branching point of
conductors exceeds 80 °C, special precautions must be taken. If the equipment is operated
in an air ambient in excess of 50 °C to 60 °C, only use cables with a permissible operating
temperature of at least 85 °C.
Safety notices when using according to FM
If you use the device under FM conditions you must also keep to the following safety notices
in addition to the general safety notices for protection against explosion:
Wall mounting outside of the control cabinet or housing does not fulfill the requirements of
the FM approval.
Substitution of components may impair suitability for Division 2.
Do not remove or replace while circuit is live when a flammable or combustible atmosphere
is present.
28
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
Operating Instructions, 05/2017, C79000-G8976-C454-01
SCALANCE XR-300WG