Derating 3Wa12 - Siemens SENTRON 3WA1 Manual

Integration in power distribution equipment
7.3 Derating in the power distribution equipment
7.3.3

Derating 3WA12

The following tables show the derating for size 2, installed in a control panel.
Fixed-mounted, IP31/IP41 - ventilated
Rated Conductor cross-
current section
2000 A 3 x 50 mm x 10 mm 1
2500 A 2 x 100 mm x
10 mm
3200 A 3 x 100 mm x
10 mm
4000 A 4 x 120 mm x
10 mm
Note
When the 3WA12 circuit breaker is used in the range I
considered.
Fixed-mounted, IP55
Rated Conductor cross-
current section
2000 A 3 x 50 mm x 10 mm 1
2500 A 2 x 100 mm x
10 mm
3200 A 3 x 100 mm x
10 mm
4000 A 4 x 120 mm x
10 mm
Note
When the 3WA12 circuit breaker is used in the range I
considered.
522
Control panel dimensions H x W x D [mm]: 2200 x 800 x 800
Number
of 3WAs
20 °C
2000 A
2 2000 A
1 2500 A
2 2500 A
1 3200 A
2 3200 A
1 4000 A
Control panel dimensions H x W x D [mm]: 2200 x 800 x 800
Number
of 3WAs
20 °C
1910 A
2 1830 A
1 2300 A
2 2290 A
1 2900 A
2 2540 A
1 3720 A
Max. operational current at ambient temperature
25 °C 30 °C 35 °C
2000 A 2000 A 2000 A
2000 A 2000 A 2000 A
2500 A 2500 A 2500 A
2500 A 2480 A 2430 A
3200 A 3200 A 3200 A
3120 A 3040 A 2960 A
4000 A 4000 A 3930 A
n
Max. operational current at ambient temperature
25 °C 30 °C 35 °C
1870 A 1830 A 1790 A
1790 A 1750 A 1710 A
2250 A 2200 A 2150 A
2230 A 2170 A 2110 A
2840 A 2780 A 2720 A
2480 A 2420 A 2360 A
3650 A 3580 A 3510 A
n
Equipment Manual, 02/2023, 92310000002-06
40 °C 45 °C
2000 A 2000 A
1960 A 1910 A
2500 A 2440 A
2380 A 2330 A
3140 A 3070 A
2880 A 2820 A
3860 A 3790 A
≤ 1600 A, no derating needs to be
40 °C 45 °C
1750 A 1710 A
1670 A 1630 A
2100 A 2050 A
2050 A 1990 A
2660 A 2600 A
2300 A 2250 A
3440 A 3370 A
≤ 1250 A, no derating needs to be
3WA1 air circuit breaker
50 °C
1970 A
1870 A
2380 A
2270 A
3000 A
2750 A
3720 A
50 °C
1670 A
1590 A
2000 A
1920 A
2530 A
2200 A
3300 A