User Documentation

Weidmüller Interface GmbH Co. KG; Klingenbergstraße 16, 32758 Detmold-Germany
Warning:
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 manufacturer declares compliance with other relevant Directives,
and all other safety related requirements including those of Annex II of this Directive.
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.
Schedule of Limitations:
The feed through and protective earth 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 60079-7. For combustible dust these enclosures must satisfy the requirements
according to IEC/EN 60079-31.
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.
T6 (- 60°C ... +40 °C)
T5 (- 60°C … +55 °C)
T4 (- 60°C ... +70 °C)
When using the types ZDUB and ZPEB with other terminal blocks series or sizes or accessories, the requirements
for clearance and creepages distances according to IEC/EN 60079-7 must be observed. Regarding the use of
covers, cross-connectors and end brackets the instructions of the manufacturer must be followed.
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.
Always ensure the the conductor is placed between the tension clamp and ZQB 2.5. The
conductor cross-sectons is reducedto to 1,5 mm².
Note:
If smaller cross sections than the rated cross section are used, the belonging lower current has to be laid down in
the IECEx/EC-Type Examination Certificate of the complete apparatus.
Mounting instructions:
The ZDUB/ZPEB series is suitable for application in enclosures in atmospheres with flammable gases or
combustible dust. For use in flammable gases these enclosures must satisfy the requirements according to
IEC/EN60079-0 and IEC/EN60079-7. For use in combustible dust these enclosures must satisfy the requirements
according to IEC/EN60079-0 and IEC/EN60079-31.
In combination with other terminal block series and sizes and if other accessories are used, the applicable creepage
and clearance distances shall be met.
Regarding the use of accessories the instructions of the manufacturer must be followed.
Under normal operating conditions the temperature rise of the terminal blocks is maximum 40 K, measured at the
maximum permitted rated current. Due to the above mentioned, the terminal blocks may be used in apparatus of
temperature classes T6..T1 as long as the terminal block ambient temperature range is not exceeded. No part of
terminal block must exceed 110 °C under any condition.
For cross connection accessories the current ratings and the resistances across the terminals please refer to the
table under “Technical data” above.
The enclosure shall be constructed to block all sun and UV light from affecting the terminal blocks. The terminal
blocks shall be placed inside a suitable certified IP54 enclosure in type of protection “e” for gas atmosphere. For dust
atmosphere the terminal blocks shall be mounted inside a suitable certified enclosure (EN60079-31) in type of
protection “t”.
Version: ZDUB 2,5-2/2AN/15; 10651322 Index: 00 Date: 02.2017
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