User Documentation

Weidmüller Interface GmbH Co. KG; Klingenbergstraße 16, 32758 Detmold-Germany
Manually cut cross connections and cross connections with blank ends (ZQV´s ≥ 20 poles) shall not
be used.
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 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.
For terminal jumper accessories 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”.
When using the WMF FU terminal blocks with other terminal blocks series or sizes or accessories, the
requirements for clearance and creepages distances according to table 1 of IEC/EN 60079-15 must be
observed. Regarding the use of covers, cross-connectors and end brackets the instructions of the
manufacturer must be followed.
WARNING – Do not remove or replace the fuse disconnect switch when energized!
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 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).
Schedule of Limitations:
The fuse 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.
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.
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.
Unused terminals shall be tightened.
Version: WMF FU 4986622 Index: 01 Date: 06.2016
4