WARNING
If the device is installed in a cabinet, the inner temperature of the cabinet corresponds to the
ambient t
emperature of the device.
Safety notices on use in hazardous areas
Gener
al safety notices relating to protection against explosion
WARNING
When used in hazardous environments corresponding to Class I, Division 2 or Class I, Zone 2,
t
he device must be installed in a cabinet or a suitable enclosure.
WARNING
EXPLOSION HAZARD
Replacing com
ponents may impair suitability for Class 1, Division 2 or Zone 2.
WARNING
The device may only be operated in an environment of contamination class 1 or 2 (see EN/IEC
60664-1, GB/T 16935.1).
Notes for use in hazardous locations according to ATEX, IECEx, UKEX and CCC Ex
If y
ou use the device under ATEX, IECEx, UKEX or CCC Ex conditions you must also keep to
the following safety instructions in addition to the general safety instructions for protection
against explosion:
WARNING
To comply with EU Directive 2014/34 EU (ATEX114), UK-Regulation SI 2016/1107 or the
conditions
of IECEx or CCC-Ex, the housing or cabinet must meet the requirements of at least
IP54 (according to EN/IEC 60529, GB/T 4208) in compliance with EN IEC/IEC 60079‑7, GB
3836.3.
Installation and removal
5.1Safety notices for installation
SCALANCE MUM853-1
34 Operating Instructions, 03/2023, C79000-G8976-C650-05
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