Page 619 - Wago_PCB_TerminalBlocksConnectors_Volume2_2015_US

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Approvals Marking of the terminal block shall appear as follows in accor-
dance with 94/9/EC Ex Safety Guideline ATEX 100 a:
Terminal blocks may be used in Zone 1
and Zone 2, provided that the terminal 4 II 2 G Ex e IIEx e II
blocks are accommodated in an enclo-
sure that has a minimum of IP54 protec- Explosion prevention marking
tion and an Ex e certification Group II (for equipment used in areas in which an explosive
Terminal blocks are considered to be Ex atmosphere might occur)
items in components, as they are only a
part of the item of equipment. This is why Category 2 (high safety, equipment used in areas [zones] in which a
the Ex Certification Agencies issue partial potentially explosive atmosphere occurs only occasionally.
certificates as the basis for issuing of the Explosion protection must continue to be provided
complete conformity declaration for the even in the event of frequent device faults.)
unit. Gases
In accordance with the Explosion Protec- Explosion protection in Europe, type of protection “Increased Safety”,
tion Directive 94/9/EC (ATEX 100 a), an Group II
EC-type examination certificate based on
ATEX 100 a is issued. or
In addition, an IEXEx certificate may also 4 I M2 Ex e I
be obtained from an appropriate, recog- Explosion prevention marking
nized certification agency in accordance
with the IECEx Certification Agreement Group I (for equipment used in underground applications)
that is accepted throughout Europe and
also in countries such as Canada, China Mining applications
and Australia.
These can also be viewed at: Explosion protection in Europe, Type of protection “Increased safety”,
www.iecex.com . Group I

Marking with the Ex code 4 is also adequate as an alternative.

EC-type examination certificates have guishing Polyamide 6.6. The same dance with IEC 60216-1 and -2 are pro-
been granted to all WAGO terminal applies to the other terminal blocks in the vided.
blocks listed in this catalog. non explosion endangered area. Track- A routine check test is performed at the
The WAGO terminal blocks approved for ing resistance with a CTI value of 600 as factory on all PCB terminal blocks with
the ignition protection type Ex e II are per IEC 60112 and a constant operating Ex e II certification to monitor and ensure
manufactured of flame resistant, self-extin- temperature of 105 °C (22 °F) in accor- the quality features described previously.

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