Siemens SCALANCE XR-100WG Operating Instructions Manual page 22

Installation
3.1 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:
To fulfill the requirements of the FM approval rack mounting is only possible in a vent free, tool-
secured enclosure.
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.
Explosion hazard
Do not disconnect equipment when a flammable or combustible atmosphere is present.
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Operating Instructions, 09/2020, C79000-G8976-C455-04
SCALANCE XR-100WG