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B-53
Distribution
Polypact selection table for special cases
Rated operational current as a function of the temperature inside the switchboard
Temperature (°C)
40 45 50 55 60 65 70
Rated operational
current: Ie (A)
Polypact 3P 800 800 775 750 725 700 675
Polypact 4P 675 675 655 635 615 595 570
To obtain the maximum permissible current for the Polypact distr bution block, apply
the diversity factor K:
Polypact 3P: K = 0.8
Polypact 4P: K = 0.9.
Supplied with:
self-adhesive labels to mark the phases for the connections to the busbars.
b
DD381247
DD381249
04404.
04408.
DD381250
DD381251
Supply of three NSX100/250 four-pole devices
equipped with long terminal shields
downstream.
Auxiliary wires running in the built-in trunking.
Dd383593
DD381253
Phase marking on the front of the distribution
block.
Phase marking on the side of the distribution
block.
Identification labels on the flexible
connections.
Tooth-caps
Designation
Cat. no.
Polypact tooth-caps
04809
Dd383594
The caps block off the reserve terminals on a Polypact three-pole or four-pole
distribution block.
Made of an insulating material, they simply clip on from the front.
DD381255
Polypact distribution block
Secondary distribution