Betriebsanleitung / Operation manual
Verteiler mit Klemmen / Terminal box
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Version 08/2018 Seite/page 25/54
11. Handling of tables under point 17+18 (from page 28)
You can get the amount of terminals for a terminal box by consideration of terminal size
and the max. current load in the according table of the selected enclosure.
Using the table values, concomitance- or load factors according IEC 439 may be used.
Example: QX-P5:
Mixed assembling of circuits with different cross sections and currents are possible by
proportionately usage of the table values.
Example (general):
Cross-section
Current
Amount of terminals
Utilisation
1,5mm²
16A
7 (of 14)
= 50%
2,5mm²
20A
4 (of 16)
=
25%
4mm²
25A
4 (of 18)
=
22%
Sum
= 97% = OK (< 100%)
^
Enclosure type / Size
Terminal size
Nominal current
Result:
Max. 7 terminals possible.
If more are needed you
must select larger
enclosure.
Max. physical amount:
Depends on manufacturer
and type.