Siemens SCALANCE X-300EEC Compact Operating Instructions page 12

Safety notes
2.1 Important notes on using devices (BA X-300)
Safety notice for connectors with LAN (Local Area Network) marking
A LAN or LAN segment, with all its associated interconnected equipment, shall be entirely
contained within a single low-voltage power distribution and within a single building. The
LAN is considered to be in an "environment A" according to IEEE802.3 or "environment 0"
according to IEC TR 62102, respectively. Never connect directly to TNV-circuits (Telephone
Network) or WAN (Wide Area Network).
General notices about 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.
Opening the device
DO NOT OPEN WHEN ENERGIZED.
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WARNING
WARNING
WARNING
WARNING
WARNING
Compact Operating Instructions, 11/2015, A5E02630809-09
SCALANCE X-300EEC