WEG W22Xdb C 315 - Page 53

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ATEX Marking
IECEx Marking
II 2 G
Ex db IIB T4 (or T3) Gb or Ex db eb IIB T4 (or T3) Gb or Ex db ia (or ib) IIB T4
(or T3) Gb or Ex db eb ia (or ib) IIB T4 (or T3) Gb or
Ex db IIC T4 (or T3) Gb or Ex db eb IIC T4 (or T3) Gb or Ex db ia (or ib) IIC T4
(or T3) Gb or Ex db eb ia (or ib) IIC T4 (or T3) Gb
European symbol for “Ex” products
II
Group of material designed for places with potentially explosive
atmospheres, other than mines susceptible to firedamp
2
Area where an explosive atmosphere, is likely to occur in case of
abnormal working conditions of the installation
G
Explosive atmosphere due to gas
Ex
Symbol which indicates that the material complies with one or several
of the protection modes in accordance with European Standards
db
Enclosure with flameproof protection
eb
Component with increased safety protection
ia
Intrinsic safety protection level ia
ib
Intrinsic safety protection level ib
B
Subdivision of group II
C
Subdivision of group II
T3/T4
Temperature class
Gb
Equipment protection level
10.1.2 For explosive atmospheres with gas and/or dust:
ATEX Marking
IECEx Marking