34
Use in Hazardous Environments
WAGO-I/O-SYSTEM 750
750-1418 8DI 24V DC 0.2ms, low-side switching, 2-conductor
Manual
Version 1.1.0
Table 14: Description of marking example for approved Ex i I/O modules according to ATEX and
IECEx
Inscription text
Description
TÜV 07 ATEX 554086 X
IECEx TUN 09.0001X
TÜV 12 ATEX 106032 X
IECEx TUN 12.0039 X
Approving authority and 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
3(2)D
Category 3 (Zone 22) equipment containing a safety
device for a category 2 (Zone 21) equipment
Ex
Explosion protection mark
tc Dc
Type of protection and equipment protection level
(EPL): protection by enclosure
[ia Da]
Type of protection and equipment protection level
(EPL): associated apparatus with intrinsic safety
circuits for use in Zone 20
[ib Db]
Type of protection and equipment protection level
(EPL): associated apparatus with intrinsic safety
circuits for use in Zone 21
IIIC
Explosion group of dust
T 135°C
Max. surface temperature of the enclosure (without a
dust layer)
Mining
I
Equipment Group: Mining
M2 (M1)
Category: High level of protection with electrical
circuits which present a very high level of protection
Ex d Mb
Explosion protection mark with Type of protection
and equipment protection level (EPL): 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
