WAGO-I/O-SYSTEM 750 XTR
Use in Hazardous Environments 43
750-407/040-000 2DI 220V DC 3.0ms XTR
Manual
Version 1.3.0
Table 23: Description of Marking Example for Approved Ex i I/O Module According to ATEX and
IECEx
Marking
Description
TUEV 12 ATEX 106032 X
IECEx TUN 12 0039 X
Approving authority resp. certificate numbers
Dust
II
Equipment group: All except mining
3 (1) D
Category 3 (Zone 22) equipment containing a safety
device for a category 1 (Zone 20) equipment
Ex
Explosion protection mark
tc
Type of protection: Protection by enclosure
[ia Da]
Type of protection and equipment protection level
(EPL): Associated apparatus with intrinsic safety
circuits for use in Zone 20
IIIC
Explosion group of dust
T135°C
Max. surface temperature of the enclosure
(without a dust layer)
Dc
Equipment protection level (EPL)
Mining
I
Equipment Group: Mining
M2 (M1)
Category: High level of protection with electrical
circuits which present a very high level of protection
Ex
Explosion protection mark
d
Type of protection: Flameproof enclosure
[ia Ma]
Type of protection and equipment protection level
(EPL): Associated apparatus with intrinsic safety
electrical circuits
I
Explosion group for electrical equipment for mines
susceptible to firedamp
Mb
Equipment protection level (EPL)
Gases
II
Equipment group: All except mining
3 (1) G
Category 3 (Zone 2) equipment containing a safety
device for a category 1 (Zone 0) equipment
Ex
Explosion protection mark
ec
Equipment protection by increased safety “e”
[ia Ga]
Type of protection and equipment protection level
(EPL): Associated apparatus with intrinsic safety
circuits for use in Zone 0
IIC
Explosion group of gas and vapours
T4
Temperature class: Max. surface temperature
135 °C
Gc
Equipment protection level (EPL)
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