INSTALL AT ION
1/9
Power losses To ensure service continuity of the plants, careful assessment of how to keep temperatures within accept- able levels is necessary to guarantee operation of all devices (e.g. by using forced ventilation in switchboards and installation rooms). The table below shows the dissipated power values per single pole at the rated current In for each fixed cir- cuit-breaker used. The total maximum dissipated power for a circuit-breaker used at 50/60Hz is equal to the power per single pole multiplied by the number of poles.
Trip unit
In [A]
XT1 [W/pole]
XT2 [W/pole]
XT3 [W/pole]
XT4 [W/pole]
XT5 [W/pole]
XT6 [W/pole]
Thermomagnetic trip units: TMF. TMA. TMG
15 20 25 30 35 40 45 50 60 70 80 90
1.3 1.8 2.0 1.8 2.0 2.6 3.0 3.7 3.9 3.7 4.8 5.7 7.0 8.3
1.1 1.6 1.8 2.3 2.8 3.7
- - - - - - - -
- -
2.7 3.9 4.4 4.5
-
-
4.1 4.4 4.4 5.8 6.6 8.1 8.8
4.7 4.8 5.4 5.5 6.0 6.2 6.7 7.4 7.8 8.9 9.1
3.9 3.7 4.8 4.5 5.6 5.8 6.6 6.9 7.9
100 110 125 150 160 175 200 225 250 300 400 500 600 800
10.7
11.4
- - - - - -
- - - - - -
10.1 13.2 14.4
11.9 13.3 16.4
-
15.4 24.1 33.5 46.0
30.6 54.2
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