Siemens SCALANCE X-400 Compact Operating Instructions page 8

Safety instructions
2.1 Important notes on using the device
Information on use in hazardous areas
Risk of explosion when connecting or disconnecting the device
EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.
Replacing components
EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION
2 OR ZONE 2.
Requirements for the cabinet/enclosure
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.
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WARNING
WARNING
WARNING
SCALANCE X-400 extender modules
Compact Operating Instructions, 04/2013, A5E00367421-10