22 •
Use in Hazardous Environments
Marking Configuration Examples
WAGO-I/O-SYSTEM
750
I/O
Modules
3.1.2 Marking for America according to NEC 500
Figure 5: Side marking example for I/O modules according to NEC 500
Figure 6: Text detail – Marking example for I/O modules according to NEC 500
Table 3: Description of marking example for I/O modules according to NEC 500
Printing on Text
Description
CL 1
Explosion protection group (condition of use
category)
DIV 2
Area of application (zone)
Grp. ABCD
Explosion group (gas group)
Optemp code T4
Temperature class
