Basic HTML Version
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system
Horizontal busbars up to 3200 A
Busbar configuration
The bars are supported by insulating supports fixed to
the framework.
The tables on this page show:
• The number and section of the bars to be used
according to the permissible current level of in
the busbar;
• The number of bar supports to be installed in each
type of framework, according to:
– The section of the bars.
– The rated short-time withstand current Icw.
For further information on configuring the busbar,
see page
3/128
.
The busbar takes up 3 Prisma modules of 50 mm
each.
Number and section of the copper bars
Number of supports (centre-to-centre distance: 75 mm)
Number of supports (centre-to-centre distance: 115 mm)
Framework width
(mm)
Bar section
(mm)
No. of Icw supports (kA eff/1 s)
25 30 40 50 60 65 75 85
700
1 bar, 50 10
1 bar, 60 10
1 bar, 80 10
4
2 bars, 50 10
2
3
2 bars, 60 10
2 bars, 80 10
2 bars, 100 10
300
All sections
1
2
Framework width
(mm)
Bar section
(mm)
No. of Icw supports (kA eff/1 s)
25 30 40 50 60 65 75 85
700
1 bar, 50 10
1 bar, 60 10
4
1 bar, 80 10
2 bars, 50 10
2
3
2 bars, 60 10
2 bars, 80 10
2 bars, 100 10
300
All sections
1
2
Permissible current level (A)
No. bars/phase
IP55
1080
1 bar, 50 10
1250
1 bar, 60 10
1600
1 bar, 80 10
1850
2 bars, 50 10
2000
2 bars, 60 10
2500
2 bars, 80 10
2900
2 bars, 100 10
Note: The busbar permissible current level values are provided for an ambient temperature of 35 °C around
the panel.
3 modules
03_121_135_SFM080.indd 126
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