Rockwell Automation Low-Voltage Switchgear and Controlgear - Manual (Page 75)

• Year of construction (or code for the year of manufacture)
• Mark supplemented with specifications
- of the equipment group (for example II for miscellaneous areas with explosive atmos-
pheres, not in mines)
- of the equipment category (for example 2 for devices that may be used in zones 1 and 2,
supplemented with the letters G and/or D; G for explosive gas mixtures or D for dusts).
For devices that are used for protection of devices in the Ex-area but which themselves
are not installed in the Ex-area, the 2 is placed in brackets
Æ for example
II 2 G or II (2) G, Code number under ATEX.
• Devices that are directly used in an explosive atmosphere receive an additional code number
to reduce the risk of misunderstandings:
Æ for example EEx e IIC T3, Code under CENELEC, “e” for Increased Safety, IIC for the
explosions subgroup “Hydrogen”, T3 stands for a maximum surface temperature of
200 °C.
• Number of the ATEX certificate (e.g. PTB 04 ATEX 3039; a “U” at the end of the ATEX
number indicates that the device cannot be deployed alone as complete electrical equipment
for the Ex-Area – i.e. for example only in conjunction with a motor).
• Relevant standard (for example EN 60079-14 for electrical equipment in hazardous areas
with gas)
• The application instructions associated with the device (trip characteristics etc.) must be
available (for example via Internet). The place of availability of information must be stated on
the device.
2.4.7.6 IECEx and other approval schemes for hazardous areas
Much of the information in this section refers to ATEX standards. ATEX is a European-based
approval scheme, but may not be accepted in some other parts of the world. Other common
hazardous area standards include IECEx (mandatory in some countries, such as Australia) and
NEC (USA).
Readers should refer to their local national standards for clarification. For IECEx see also
www.iecex.com .
LVSAM-WP001A-EN-P - April 2009 2-47