Siemens SCALANCE W774-1 Operating Instructions Manual page 38

Connection
5.1 Lightning protection, power supply and grounding
General notes on use according to ATEX and IECEx
EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.
General notes on use in hazardous areas according to UL-HazLoc
EXPLOSION HAZARD
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE
NON-HAZARDOUS.
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
This equipment is suitable for use in Class I, Zone 2, Group IIC or non-hazardous locations
only.
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WARNING
WARNING
SCALANCE W774-1 /W734-1
Operating Instructions, 01/2017, C79000-G8976-C325-08