Siemens SIMATIC NET SCALANCE W734-1 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
You may only connect or disconnect cables carrying electricity when the power supply is
switched off or when the device is in an area without inflammable gas concentrations.
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.
38
WARNING
WARNING
SCALANCE W774-1 /W734-1
Operating Instructions, 09/2017, C79000-G8976-C325-09