Siemens SENTRON 3WA1 - Derating 3 WA12

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