Safety symbols
C.2 Safety-related symbols for devices with Ex protection
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
309
Symbol
Meaning
For Zone 2 potentially explosive atmospheres, be aware that the device may only
be used when it is installed in an enclosure with a degree of protection
≥ IP54.
For Zone 22 potentially explosive atmospheres, be aware that the device may
only be used when it is installed in an enclosure with a degree of protecti
on ≥
IP6x.
Summary of Contents for Simatic S7-1500H
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