Page 617 - Wago_Rail-MountedTerminalBlockSystems_Volume1_2015_US.pdf

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Approvals The marking of terminal blocks shall appear as follows in accordance with
94/9/EC Ex Safety Guideline ATEX 100 a:
Terminal blocks can be used in Zones I
and II, provided that the terminal blocks
are accommodated in an enclosure that 4 II 2 G Ex e II
has a minimum IP54 protection and an
Ex e certification. Explosion prevention marking
Terminal blocks are considered to be Ex Group II (for equipment used in areas in which an explosive
components, as they are a part of the atmosphere might occur)
equipment. Part certificates provided by
Ex Certification Agencies serve as a
basis for issuing the complete conformity Category 2 (high safety, equipment used in areas [zones] in which a
declaration for the unit. potentially explosive atmosphere occurs only occasionally. Explosion
In accordance with the Explosion Protec- protection must continue to be provided even in the event of frequent
tion Directive 94/9/EC (ATEX 100 a), an equipment faults.)
EC-type examination certificate based on
ATEX 100 a is issued. Gases
In addition, an IEXEx Certificate may also Explosion protection in Europe, type of protection “Increased Safety”,
be obtained from an appropriate, recog- Group II
nized certification agency in accordance
with the IECEx Certification Agreement or
that is accepted throughout Europe and 4 I M 2 Ex e I
also in countries such as Canada, China
and Australia. Explosion prevention marking
These certificates can also be viewed at:
www.iecex.com. Group I (for equipment used in
underground applications)

Mining applications
Explosion protection in Europe, type of protection “Increased Safety”,
Group I

Example of marking (rear):

Series

Manufacturer‘s name

Nominal isolation voltage

Type of protection

Part certification no.

Nominal cross section
(solid, stranded or fine-stranded conductors)
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The embossed details on the terminal
blocks show the manufacturer’s name, the
series no., the type of protection Ex e II,
the approval no., the approval data and
the name of the test house.