46
Use in Hazardous Environments
WAGO-I/O-SYSTEM 750 XTR
750-557/040-000 4AO +/-10V DC /XTR
Manual
Version 1.3.0
Figure 20: Text Detail
– Marking Example for Approved Ex i I/O Modules According to CEC 18
attachment J
Table 27: 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