WAGO 750 XTR - Table 71: Description of Marking Example for Approved I;O Module Ex I; Table 72: Description of Marking Example for Approved I;O Module Ex I

96 Use in Hazardous Environments WAGO I/O System 750 XTR
750-677/040-000 4PWM 24 VDC 0.2A XTR
Manual
Version 1.0.0
Figure 41: Text Detail – Marking Example for Approved I/O Module Ex i According to NEC 505
Table 71: Description of Marking Example for Approved I/O Module Ex i According to NEC 505
Marking
Description
CI I,
Explosion protection group
Zn 2
Area of application
AEx
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 20
IIC
Group
T4
Temperature class
Gc
Equipment protection level (EPL)
Figure 42: Text Detail – Marking Example for Approved I/O Module Ex i According to NEC 506
Table 72: Description of Marking Example for Approved I/O Module Ex i According to NEC 506
Marking
Description
CI I,
Explosion protection group
Zn 2
Area of application
AEx
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)