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GMC-I Messtechnik GmbH 89
Table 5
Table 6
Short-Circuit Current Minimum Display Values
for the determination of nominal current for various fuses and breakers for systems with nominal voltage of U
N
= 230 V
Example
Display value 90.4 A next smaller value for circuit breaker char-
acteristic B from table: 85 A protective device nominal current
(I
N
) max. 16 A
Z
ST
k
Limit Value
Min. Dis-
play Value
10 14
15 19
20 25
25 30
30 36
35 42
40 47
45 53
50 58
56 65
60 69
70 80
80 92
90 103
100 114
150 169
200 253
250 315
300 378
350 440
400 503
450 565
500 628
600 753
700 878
800 >999
Nominal
Current
I
N
[A]
Low Resistance Fuses
per DIN VDE 0636 series of standards
With Circuit Breaker and Line Switch
Characteristic gL, gG, gM Characteristic B/E
(formerly L)
Characteristic C
(formerly G, U)
Characteristic D
Characteristic K
Breaking Current I
A
5 s Breaking Current I
A
0.4 s Breaking Current I
A
5 x I
N
(< 0.2 s/0.4 s)
Breaking Current I
A
10 x I
N
(< 0.2 s/0.4 s)
Breaking Current I
A
20 x I
N
(< 0.2 s/0.4 s)
Breaking Current I
A
12 x I
N
(< 0.1 s)
Limit Value
[A]
Min.
Display
[A]
Limit Value
[A]
Min.
Display
[A]
Limit Value
[A]
Min.
Display
[A]
Limit Value
[A]
Min.
Display
[A]
Limit Value
[A]
Min.
Display
[A]
Limit Value
[A]
Min.
Display
[A]
2 9.2 10 16 17 10 11 20 21 40 42 24 25
314.11524251516303260643638
4192032342021404280854851
627284750303260641201287276
8373965694042808516017296102
10 47 50 82 87 50 53 100 106 200 216 120 128
13 56 59 98 104 65 69 130 139 260 297 156 167
16 65 69 107 114 80 85 160 172 320 369 192 207
20 85 90 145 155 100 106 200 216 400 467 240 273
25 110 117 180 194 125 134 250 285 500 578 300 345
32 150 161 265 303 160 172 320 369 640 750 384 447
35 173 186 295 339 175 188 350 405 700 825 420 492
40 190 205 310 357 200 216 400 467 800 953 480 553
50 260 297 460 529 250 285 500 578 1000 1.22 k 600 700
63 320 369 550 639 315 363 630 737 1260 1.58 k 756 896
80 440 517 960 1.16 k
100 580 675 1200 1.49 k
125 750 889 1440 1.84 k
160 930 1.12 k 1920 2.59 k
89


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