Weldmuller AKE 4 Modular Terminal Blocks Owner’s Manual

: June 16, 2024
: Weldmuller

Table of Contents

AKE 4 Modular Terminal Blocks
References
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Download This Manual (PDF format)

INSTALLATION INSTRUCTIONS
& CONDITIONS FOR SAFE USE
II 2 GD
Ex eb IIC Gb

AKE 4 Modular Terminal Blocks

Modular TERMINAL Blocks: AKZ- Series
TÜV 18 ATEX 8221 U
IECEx TUR 18.0024 U
Notified Body No. of Ex – QA: 0344
Label print on package unit: 0344
TÜV21UKEX7053U
Approved Body No. of UK Ex – QA: xxxx (see product marking)

Standards:
EN IEC 60079-0:2018 and EN IEC 60079-7:2015 A1:2018
IEC 60079-0: 7th Edition and IEC 60079-7: 5.1th Edition

Modular Terminal Blocks: AKZ 4 Wemid

Version:| AKZ 4 WEMID| Order No
9537110000
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in conjunction with:| AKE 4| 380260000
Accessories:
partition plate
end plate| Type
TW AKZ
AP AKZ4 DB
TW AKZ| 1190330000
9537910000
1190330000
end bracket| EW 15
EW 15/2| 0382860000
1071900000
Terminal rail| TS 15/… acc.to IEC 60715
Cross-connection| Q 2 AKZ4
Q 3 AKZ4
Q 4 AKZ4
Q 10 AKZ4| 0336400000
0336500000
0336600000
0368600000
Insulation material:
– Type PA
– Tracking resistance (A) to IEC 60112
– Flammability class to UL 94
– Operating temperature range
– Ambient temperature range
– Ambient temperature range
– Ambient temperature range

in all colours| CTI ≥ 600
V0
-60°C to +110°C (insulating material limit)
-60°C…+40°C (for T6 applications)
-60°C…+55°C (for T5 applications)
-60°C…+70°C (for T4 applications)
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Technical data according to IEC/EN 60079-7 (increased safety “eb”):

– Rated voltage
– Rated current
– Temperature rise with rated current
– Rated current with cross connection| AKZ 4 Wemid AKE 4
275 V
32 A
≤ 40 K / 32 A
32 A
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– Contact resistance with rated conductor
– Conductor cross section solid
– Conductor cross section stranded
– Conductor cross section flexible
– cross section, American Wire Gauge
– Tightening torque range, terminal screw
– Tightening torque range, fixing screw
– Tightening torque range for cross connection
– Stripping length| 0,2 mΩ
0,5 – 6 mm²
1,5 – 2,5 mm²
0,5 – 4 mm²
26 – 12 AWG
0,6 – 0,8 Nm
0,4 – 0,8 Nm
8 mm| 0,3 mΩ
0,5 – 4 mm²
1,5 – 4 mm²
0,5 – 4 mm²
26 – 12 AWG
0,5 – 1,0 Nm
0,5 – 1,0 Nm
9 mm
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IECEx / ATEX / UKCA Terminal and Cross-Connection Arrangements:
Max voltage data according to IEC/EN 60079-7 in conjunction with protective earth terminal blocks of the AKZ-Series, (increased safety “eb”):
Application Case – The open terminal block side is located on the right hand side.
Note:
Please use the end plate AP AKZ4 DB.

The AKZ 4 terminal include the option of setting up a cross-connection with more than 10 poles, e.g. 20-pole: 2 No. Q 10 (3) + 1 No. QL 2 (2). The end fixing screws are removed from the Q 10 (3) links by unscrewing them from the VH (4) sleeves. The QL 2 (2) is positioned between these and the two fixing screws (1) screwed into their VH sleeves again. This arrangement allows 20 poles to be cross connected.

E – Next to a protective conductor terminal (earth)

Information for further cross-connector arrangements will be provided on request.
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 / UKCA Certificate of the complete apparatus.
Mounting instructions:
The AKZ/AKE-series products 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.
Regarding the use of accessories the instructions of the manufacturer must be followed.
Schedule of Limitations:
The AKZ/AKE-series products 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 IEC/EN 60079-7. For combustible dust the enclosure must satisfy the requirements according to IEC/EN 60079-0 and IEC/EN 60079-31.
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 “eb” for gas atmosphere. For dust atmosphere the terminal blocks shall be mounted inside a suitable certified enclosure (IEC/EN 60079-31) in type of protection “t”.
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 shall exceed 110°C under any condition.
Ambient temperature
T6 (- 60°C … +40 °C)
T5 (- 60°C … +55 °C)
T4 (- 60°C … +70 °C)
When using the AKZ/AKE-series products especially with other terminal blocks series or sizes or accessories the requirements for clearance and creepage 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.
For cross connection accessories current rating, resistance across the terminal please refer to the table under “technical data” above.
If AKZ 4 Wemid or AKE 4 is used with an other terminal of different typ or sizes, these constellations have to be investigated. 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.
If AKE 4 Wemid is used as an end terminal block then an AP AKZ4 or a TW AKZ must be used in combination with end braket EW 15 or EW 15/2.
Unused terminals shall be tighted.
Essential Health and Safety Requirements:
Concerning ESRs this Schedule verifies compliance with the Annex II of ATEX / Schedule 1 of UKCA directive and Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations 2016 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 / Schedule 1 of these Directives.