Cut Sheet
4 - 2CDC002177D0203
Miniature Circuit Breaker SU200 M
Deviating ambient temperature
The rated value of the current of a miniature circuit breaker of
SU200 M series refers to a reference ambient temperature of
30 °C acc. to IEC/EN 60947-2 and 40° acc. to UL/CSA. The
Standard Rated Maximum operating current at ambient temperature T
current
I
n
A A
- 40 °C - 30 °C - 20 °C - 10 °C 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C
IEC/EN
60947-2
0.2 * 0.26 0.25 0.24 0.23 0.22 0.22 0.21 0.20 0.19 0.19 0.18 0.17
0.3 * 0.39 0.37 0.36 0.35 0.33 0.32 0.31 0.30 0.29 0.28 0.27 0.26
0.5 0.64 0.62 0.60 0.58 0.56 0.54 0.52 0.5 0.48 0.46 0.45 0.43
0.75 * 0.97 0.93 0.90 0.87 0.84 0.81 0.78 0.75 0.72 0.70 0.67 0.65
1 1.29 1.24 1.20 1.16 1.12 1.08 1.04 1 0.96 0.93 0.89 0.86
1.6 1.68 1.62 1.56 1.50 1.45 1.40 1.35 1.3 1.25 1.21 1.16 1.12
2 2.58 2.49 2.40 2.31 2.23 2.15 2.07 2 1.93 1.85 1.79 1.72
3 3.87 3.73 3.60 3.47 3.35 3.23 3.11 3 2.89 2.78 2.68 2.58
4 5.16 4.97 4.80 4.63 4.46 4.30 4.15 4 3.85 3.71 3.57 3.44
5 6.45 6.22 6.00 5.78 5.58 5.38 5.19 5 4.82 4.64 4.47 4.30
6 7.74 7.46 7.20 6.94 6.69 6.45 6.22 6 5.78 5.56 5.36 5.16
8 10.32 9.95 9.59 9.25 8.92 8.60 8.30 8 7.70 7.42 7.14 6.88
10 12.90 12.44 11.99 11.56 11.15 10.75 10.37 10 9.63 9.27 8.93 8.60
13 16.76 16.17 15.59 15.03 14.50 13.98 13.48 13 12.52 12.06 11.61 11.18
15 19.34 18.65 17.99 17.35 16.73 16.13 15.56 15 14.45 13.91 13.40 12.90
16 20.63 19.90 19.19 18.50 17.84 17.21 16.59 16 15.41 14.84 14.29 13.76
20 25.79 24.87 23.98 23.13 22.30 21.51 20.74 20 19.26 18.55 17.86 17.20
25 32.24 31.09 29.98 28.91 27.88 26.88 25.93 25 24.08 23.18 22.33 21.50
30 38.69 37.31 35.98 34.69 33.45 32.26 31.11 30 28.89 27.82 26.79 25.80
32 41.27 39.79 38.37 37.01 35.69 34.41 33.18 32 30.82 29.68 28.58 27.52
35 45.14 43.53 41.97 40.47 39.03 37.64 36.30 35 33.71 32.46 31.26 30.10
40 51.58 49.74 47.97 46.26 44.61 43.01 41.48 40 38.52 37.09 35.72 34.40
50 64.48 62.18 59.96 57.82 55.76 53.77 51.85 50 48.15 46.37 44.65 43.00
60 77.38 74.61 71.95 69.39 66.91 64.52 62.22 60 57.78 55.64 53.58 51.60
63 81.24 78.35 75.55 72.85 70.25 67.75 65.33 63 61 58 56 54
UL 489 0.2 * 0.27 0.26 0.25 0.24 0.23 0.22 0.22 0.21 0.20 0.19 0.19 0.18
0.3 * 0.40 0.39 0.37 0.36 0.35 0.33 0.32 0.31 0.30 0.29 0.28 0.27
0.5 0.67 0.64 0.62 0.60 0.58 0.56 0.54 0.52 0.5 0.48 0.46 0.45
0.75 * 1.00 0.97 0.93 0.90 0.87 0.84 0.81 0.78 0.75 0.72 0.70 0.67
1 1.34 1.29 1.24 1.20 1.16 1.12 1.08 1.04 1 0.96 0.93 0.89
1.6 1.74 1.68 1.62 1.56 1.50 1.45 1.40 1.35 1.3 1.25 1.21 1.16
2 2.67 2.58 2.49 2.40 2.31 2.23 2.15 2.07 2 1.93 1.85 1.79
3 4.01 3.87 3.73 3.60 3.47 3.35 3.23 3.11 3 2.89 2.78 2.68
4 5.35 5.16 4.97 4.80 4.63 4.46 4.30 4.15 4 3.85 3.71 3.57
5 6.69 6.45 6.22 6.00 5.78 5.58 5.38 5.19 5 4.82 4.64 4.47
6 8.02 7.74 7.46 7.20 6.94 6.69 6.45 6.22 6 5.78 5.56 5.36
8 10.70 10.32 9.95 9.59 9.25 8.92 8.60 8.30 8 7.70 7.42 7.14
10 13.37 12.90 12.44 11.99 11.56 11.15 10.75 10.37 10 9.63 9.27 8.93
13 17.38 16.76 16.17 15.59 15.03 14.50 13.98 13.48 13 12.52 12.06 11.61
15 20.06 19.34 18.65 17.99 17.35 16.73 16.13 15.56 15 14.45 13.91 13.40
16 21.40 20.63 19.90 19.19 18.50 17.84 17.21 16.59 16 15.41 14.84 14.29
20 26.75 25.79 24.87 23.98 23.13 22.30 21.51 20.74 20 19.26 18.55 17.86
25 33.43 32.24 31.09 29.98 28.91 27.88 26.88 25.93 25 24.08 23.18 22.33
30 40.12 38.69 37.31 35.98 34.69 33.45 32.26 31.11 30 28.89 27.82 26.79
32 42.79 41.27 39.79 38.37 37.01 35.69 34.41 33.18 32 30.82 29.68 28.58
35 46.81 45.14 43.53 41.97 40.47 39.03 37.64 36.30 35 33.71 32.46 31.26
40 53.49 51.58 49.74 47.97 46.26 44.61 43.01 41.48 40 38.52 37.09 35.72
50 66.87 64.48 62.18 59.96 57.82 55.76 53.77 51.85 50 48.15 46.37 44.65
60 80.24 77.38 74.61 71.95 69.39 66.91 64.52 62.22 60 57.78 55.64 53.58
63 84.25 81.24 78.35 75.55 72.85 70.25 67.75 65.33 63 60.67 58.42 56.26
* Current ratings 0.2, 0.3 and 0.75 A available with K characteristic only
Miniature Circuit Breaker SU200 M Derating
following table shows derating factors for ambient temperature
from -40 °C to 70 °C for the characteristics C, K, Z.