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B-54
Distribution
Presentation
The insulated flexible bars are tested in a type-tested switchboard environment.
Their design takes into account the switchboard architecture where they are often in
close proximity to a protection device (circuit breaker or fuse) with significant heat
losses.
In-depth knowledge of switchboard architecture and the connected devices led to the
establishment of a selection table based on the type of device.
Flexible bars are 1800 mm long and made of copper with an insulating sheath.
Rated insulation level Ui = 1000 V.
The sizes for the flex ble bars indicated below take into account the heat losses of
Schneider devices in a Prisma Plus switchboard.
DD381659
Catalogue number selection
Connection between device and busbars
The flex ble bars are determined taking into account the connected device, whatever
the internal temperature of the switchboard.
The bar sizes indicated below take into account the derating curves of devices.
Device
Size (mm)
Cat. no.
NSX100
20 x 2
04742
NSX160/250
20 x 3
(1)
04743
NSX400
32 x 5
04751
NSX630
32 x 8
04753
INS125/160
20 x 2
04742
INS250
20 x 3
04743
INS400
32 x 5
04751
INS630
32 x 6
04752
200 AMulticlip
20 x 3
04743
Polypact, 3P
(2)
32 x 8
04753
Polypact, 4P
(2)
32 x 8
04753
Fupact 250
24 x 5
04746
Fupact 400
32 x 5
04751
Fupact 630
32 x 8
04753
(1)
To connect a Compact NSX250 to Powerclip busbars, use a 24 x 5 mm flexible bar (04746).
(2)
The connection of a Polypact distribution block using insulated flexible bars is not compatible
with Form 2 partitioning (04922).
In this case, use the form 2 restoration kit 04924 (see page B-28).
Connection between busbars
Flexible bars are designed for connections between busbars taking into account the
following characteristics:
a maximum temperature of 60 °C inside the switchboard. This corresponds to the
average temperature inside a switchboard for an ambient temperature of 35 °C
the maximum withstand temperature for the insulating material is 125 °C.
b
Ie max. (A)
Size (mm)
Cat. no.
200
20 x 2
04742
250
20 x 3
04743
400
24 x 5
04746
520
32 x 5
04751
580
32 x 6
04752
660
32 x 8
04753
DD382008
Insulated flexible bars
Secondary distribution