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SIVACON S8 Planning Principles – Circuit-breaker design
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Cable and busbar connection
The number of connectible cables, as stated in Tab. 3/5,
may be restricted by the available roof/floor panel openings
and/or door installations. The position of the connecting
bars is identical for front or rear connection in the cubicle.
Connection to the SIVACON 8PS busbar trunking system is
effected by means of an installed busbar trunking connec-
tor. The SIVACON S8 connecting system is located com-
pletely within the cubicle. The busbars can be connected
both from the top and from the bottom, thus allowing
flexible connection. The factory-provided copper plating
guarantees high short-circuit strength, which is verified by
a design test, as is the temperature rise limits.
Short-circuiting and earthing device (SED)
For short-circuiting and earthing, short-circuiting and
earthing devices (SED) are available for the circuit-breaker
cubicle. Suitable mounting points are affixed to the points
to be earthed, which ease SED installation.
Tab. 3/5: Cable connection for cubicles with 3WL
Cable lug DIN 46235
(240 mm
2
, M12)
1)
Max. number of cables connectible per phase
dependent on breaker size
3WL11
up to 1,000 A
3WL11
1,250 to 2,000 A
3WL12
up to 1,600 A
3WL12
2,000 to 3,200 A
3WL13
2)
up to 4,000 A
4 6 6 12 14
1)
It is possible to use 300 mm
2
cable lugs with a M12 screw, but this cable lug is not in compliance with DIN 46235, although it is supplied by
some manufacturers
2)
5,000 A and 6,300 A circuit-breakers with busbar connection
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