R-Series Trip Curves
B, C and D Trip
Less than 10A
120
B, C and D Trip
10A and higher
7200
60
40
3600
2400
20
1200
10
600
480
360
240
8
6
4
2
120
1
60
40
40
20
10
5
20
10
5
1
1
0.5
0.5
0.1
0.05
0.1
0.05
B C D
B C D
0.01
0.01
1
2
3
4
5
6
7 8 9 10 12 1416 20
1
2
3
4
5
6
7 8 9 10 12 1416 20
1.13 1.45
1.13 1.45
Multiple of Rated Current
Multiple of Rated Current
Temperature and Power Loss Specifications
Internal Impedances & Power Loss
MCBTemperature Compensation
Rated
Power
loss on
CB
Maximumallowable
impedanceof
breakdown loop(0.2/0.4s)
current
of MCB
Internal
impedance
E!ective rated current allowing for ambient temperature.
Z s ( Ω)
Z (m Ω)
P (W)
I cor (A)
I
n
(A)
Ambient Temperature
Char.
B,C,D
Char.
B,C,D
Char.B Char.C Char.D
-20°C -10°C 0°C
10°C
0.55
1.10
2.20
3.30
4.40
6.60
8.80
20°C
0.53
1.05
2.10
3.15
4.20
6.30
8.40
30°C
0.50
1.00
2.00
3.00
4.00
6.00
8.00
40°C
0.47
0.93
1.86
2.79
3.72
5.60
7.40
9.30
50°C
0.44
0.88
1.76
2.64
3.52
5.30
7.00
8.80
60°C
0.42
0.83
1.67
2.50
3.33
5.00
6.70
8.30
0.50
1.00
2.00
3.00
4.00
6.00
8.00
6600
1650
370
210
126
51
1.7
1.7
1.5
1.9
2.0
1.8
1.3
1.5
1.9
1.9
2.5
2.8
3.2
4.0
5.5
6.4
42.0
46.0
23.0
15.3
11.5
7.7
51.1
25.6
12.8
8.5
6.4
4.3
3.2
2.6
2.0
1.6
1.3
1.0
0.8
0.6
0.5
0.4
28.8
14.4
7.2
4.8
3.6
2.4
1.8
1.4
1.1
0.9
0.7
0.6
0.4
0.4
0.3
0.2
0.61
1.21
2.42
3.63
4.84
7.30
9.70
12.1
15.7
19.4
24.2
30.3
38.7
48.4
60.5
76.2
0.59
1.18
2.36
3.54
4.72
7.10
9.40
11.8
15.3
18.9
0.57
1.14
2.28
3.42
4.56
6.80
9.10
21
5.8
10.00
13.00
16.00
20.00
25.00
32.00
40.00
50.00
63.00
14.8
11.3
7.5
4.6
11.40 11.00 10.50 10.00
3.5
14.80 14.30 13.70 13.00 12.10 11.50 10.80
18.20 17.60 16.80 16.00 14.90 14.10 13.30
2.9
6.3
2.3
23.60 22.80 22.00 21.00 20.00 18.60 17.60 16.70
29.50 28.50 27.50 26.30 25.00 23.30 22.00 20.80
37.80 36.50 35.20 33.60 32.00 29.80 28.20 26.70
47.20 45.60 44.00 42.00 40.00 37.20 35.20 33.30
4.4
1.8
3.1
1.4
2.5
1.2
2.2
0.9
59.0
57.00 55.00 52.50 50.00 46.50 44.10 41.70
1.6
0.7
74.30 71.80 69.30 66.20 63.00 58.60 55.50 52.50
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