User Documentation

Weidmüller Interface GmbH Co. KG; Klingenbergstraße 16, 32758 Detmold-Germany
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.
A thermal assessment for the classification into the temperature classes T6…..T1 shall be performed. No part
of terminal block must exceed 130 °C under any condition.
The insulation material of the conductors shall meet the temperature requirements.
Manually cut cross connections and cross connections with blank ends (ZQV´s ≥ 20 poles) shall
not be used.
Mounting instructions:
The disconnect terminals of the A-series are 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.
Schedule of Limitations:
The disconncet 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 enclosure shall be constructed to block all sun and UV light from affecting the terminal blocks.
When using the types of disconncet terminals especially with other terminal blocks series or sizes or
accessories the requirements for clearance and creepage distances of EN 60079-7 must be maintained.
Regarding the use of covers, cross-connectors and end brackets the instructions of the manufacturer must be
followed.
Please refer to the table under “Technical data” above.
WARNING – Do not remove or replace the test disconnect switch when energized!
Version: ADT 2.5 3C 10264286 Index: 02 Date: 01.2020
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