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B-52
Distribution
Polypact distribution block
Presentation
Polypact is a horizontal distribution block. It connects directly to the mounting plate
and can supply:
three four-pole and four three-pole Compact NSX circuit breakers, whatever the
ratings (100, 160 or 250 A), the operating systems (toggle, rotary handle, motor
mechanism), whether fixed or plug-in, front or rear connection (the circuit breakers
must be equipped with long terminal shields downstream)
three three-pole or four-pole Interpact INS switch-disconnectors, whatever the
ratings (100, 160 or 250 A), whether front or rear connection.
The design and small size blend perfectly with the devices.
It can be supplied by flat or Linergy busbars positioned to the left or right.
A dependable switchboard
Fully insulated, Polypact contr butes to the safety of life and property.
The prefabricated connections supplied separately are secured using torque nuts to
ensure the correct tightness over time, without maintenance.
Numerous and well distributed vents ensure natural convection and optimum cooling
of the conductors.
An upgradeable switchboard
The circuit breakers can be easily connected from the front. It is simple to
interchange a device or to add a device in a reserve slot.
Functional features
There are markings (N, L1, L2, L3) on the front and the sides for the phases.
The running of auxiliary cables between the devices and the corresponding terminal
blocks is also taken into account. Spacious trunking is built into the blocks for
the auxiliary wiring.
Cat. no. selection
b
b
PD390569
PD390570
Dd383592
Fixed Compact NSX100/250 with toggle and Interpact INS250
Connection to Linergy busbars
Cat. no.
Polypact with prefabricated connections
Three-pole distribution block
04403
Four-pole distribution block
04404
Fixed/plug-in Compact NSX, all operating systems
(1) (2)
Connection to flat or Linergy busbars
Cat. no.
Polypact with prefabricated connections
Three-pole distribution block
04405
Four-pole distribution block
04406
Polypact without connection
(3)
Three-pole distribution block
04407
Four-pole distribution block
04408
(1)
For plug-in Compact NSX circuit breakers, order the adapter 29306 (3P) or 29307 (4P) with
the base.
(2)
The connection of a Polypact distribution block using prefabricated connections or insulated
flexible bars is not compatible with Form 2 partitioning (04922).
In this case, use the form 2 restoration kit (04924) : see page B-26.
(3)
Make the connection with flexible bars, 32 x 8 mm (04753) : see page B-54.
Electrical characteristics
rated operational current: distr bution-block derating follows the normal derating
curves of Compact NSX and Interpact INS devices.
rated insulation level: 750 V
impulse withstand voltage Uimp = 8 kV
short-circuit withstand current compatible with the breaking capacity of the
Compact NS circuit breakers connected to the distribution block.
Remark
For most installations, the temperature around the switchboard is 40 °C,
corresponding to an average temperature of 60 °C inside the switchboard.
Under certain conditions, the temperature inside the switchboard may be different,
for example if the room temperature is higher than 40 °C or if the cubicle is equipped
with a fan.
b
b
b
b
Polypact distribution block
Secondary distribution