8 ABB SACE
Construction and functional characteristics
Distribution busbars
MNS R distribution busbars are avail-
able for currents up to 4000 A. Distri-
bution busbars, branched directly
from main busbars, are vertically in-
stalled either on the right or on the left
in the column. They are feeding out-
going circuit-breakers, and are con-
nected to them by means of rigid or
flexible copper busbars, or cables. In
any case, all the connections are suit-
ably sized to withstand the thermody-
namic stresses of the fault currents.
Busbar distribution system with connections to the outgoing circuit-breakers made with copper
busbars and cables.
Cable
connections
Copper busbar
connections
ABB PC30 23-11-2009, 8:138
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