80 Use in Hazardous Environments
WAGO-I/O-SYSTEM 750 XTR
750-652/040-000 Serial Interface RS-232/RS-485 XTR
Manual
Version 1.3.0
Figure 30: Text Detail – Marking Example for Approved Ex i I/O Modules According to CEC 18
attachment J
Table 58: Description of Marking Example for Approved Ex i I/O Modules According to CEC 18
attachment J
Marking
Description
Dust
Ex
Explosion protection mark
nA
Type of protection
[ia IIIC]
Type of protection and equipment protection level
(EPL): Associated apparatus with intrinsic safety
circuits for use in Zone 20
IIC
Group
T4
Temperature class
Gc
Equipment protection level (EPL)
X
Symbol used to denote specific conditions of use
Gases
Ex
Explosion protection mark
nA
Type of protection
[ia Ga]
Type of protection and equipment protection level
(EPL): Associated apparatus with intrinsic safety
circuits for use in Zone 0
IIC
Group
T4
Temperature class
Gc
Equipment protection level (EPL)
X
Symbol used to denote specific conditions of use