User Documentation

Weidmüller Interface GmbH Co. KG; Klingenbergstraße 16, 32758 Detmold-Germany
Essential Health and Safety Requirements:
Concerning ESRs this Schedule verifies compliance with the Annex III of ATEX directive only. By placing the
product on the market, the of this manufacturer declares compliance with other relevant Directives,
and all other safety related requirements including those of Annex II of this Directive.
Additional information:
The manufacturer shall inform the notified body concerning all modifications to the technical documentation
as described in the ATEX Directive 2014/34/EU.
If smaller conductor cross sections than the rated conductor cross sections are used, then the
corresponding lower current shall be stated in the Certificate of the complete apparatus.
The terminal blocks shall be placed inside a suitable IECEx/ATEX certified IP54 enclosure for gas
atmosphere. For dust atmosphere the terminal blocks shall be mounted inside a suitable IECEx/ATEX
certified ‘t’ enclosure (IEC/EN60079-31).
The enclosure shall be constructed to block all sun and UV light from affecting the terminal blocks.
Under normal operating conditions the temperature rise of the terminal blocks is max 40 K, measured with
the max permitted rated current. Due to the above mentioned the terminal blocks may be used in apparatus
of temperature classes T6…T1as long as the terminal block ambient temperature range is not exceeded as
shown below. No part of terminal block must exceed 120 °C under any condition.
For cross connection accessories the current ratings and the resistances across the terminals please refer
to the table under “types & electrical rating” above. Details on creepage and clearance values and the
required torque values are in the respective “Notice to installers”.
The terminal can be used with either one or two wires into either side of the terminal. When two wires are
used they must be of the same type, and of equal sizes. No other wire sizes or types than the ones
specified in instructions must be used. The terminal blocks must either be mounted next to another block of
the same type and size or with an end plate.
Manually cut cross connections and cross connections with blank ends (ZQV´s ≥ 20 poles) shall
not be used.
Schedule of Limitations:
The feed through terminal blocks are suitable for use in enclosures in atmospheres with flammable gases or
combustible dust. For flammable gases these enclosures must satisfy the requirements according to
IEC/EN 60079-0 and 60079-15. For combustible dust these enclosures must satisfy the requirements
according to IEC/EN 60079-31.
Version: WMF 2.5 / WMF 2.5 PE 4986715 Index: 00 Date: 06.2016
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