Page 190 - B_ELSB_Cat_2022_01_MCBs

1/190 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS - TECHNICAL DETAILS 9AKK 107991 A8329
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MCBs technical details
MCBs internal resistance, power loss and max. permissible earth-fault
loop impedance

S800S - S800N - S800C - S800HV
Typical internal resistances and power losses at 25 °C ambient temperature (per pole)
Rated current I n Internal resistance R i Power loss P V
[mΩ] [W]
[A] B, C, D, K  KM  UCB, UCK  B, C, D, K KM  UCB, UCK 
0.5 8124.6 - 8124.6 2 - 2
1 1627.2 - 1627.2 1.6 - 1.6
1.6 1118.6 - 1118.6 2.9 - 2.9
2 556.6 - 556.6 2.2 - 2.2
2.5 399.3 - 399.3 2.5 - 2.5
3 270.3 - 270.3 2.4 - 2.4
4 126.4 - 126.4 2 - 2
5 57.9 - 57.9 1.5 - 1.5
6 51.7 - 51.7 1.8 - 1.8
8 27.2 - 27.2 1.7 - 1.7
10 15.2 2.7 15.2 1.5 0.27 1.5
13 12.1 - 12.1 2 - 2
16 12.1 2.7 12.1 3.1 0.69 3.1
20 8.7 2.7 8.7 3.5 1.1 3.5
25 6.8 3 6.8 4.3 1.9 4.3
32 3.1 1.7 3.1 3.2 1.7 3.2
40 2.3 1.6 2.3 3.7 2.6 3.7
50 1.7 1.1 1.7 4.3 2.8 4.3
63 1.6 1 1.6 6.4 4 6.4
80 1 0.75 1 6.4 5 6.4
100 0.8 – 0.8 8 – 8
125 0.6 – 0.6 9.4 – 9.4
 K Applicable only for S800S, S800C, S800HV  KM, UCB, UCK Applicable only for S800S
S800B
Typical internal resistances and power losses at 25 °C ambient temperature (per pole)
Rated current I Internal resistance R Power loss P
n i V
[mΩ] [W]
[A] B, C D, K B, C D, K
32 3.1 3.1 3.2 3.2
40 2.3 2.3 3.7 3.7
50 1.7 1.7 4.3 4.3
63 1.6 1.6 6.4 6.4
80 1.0 1.0 6.4 6.4
100 0.8 0.8 8.0 8.0
125 0.7 0.7 10.9 10.9

S800U
Typical internal resistances and power losses at 25 °C ambient temperature (per pole)
Rated current I [A] Internal resistance R [mW] Power loss P [W]
V
i
n
K, Z K, Z
10 15.2 1.5
15 12.1 2.7
20 8.7 3.5
25 6.8 4.2
30 3.1 2.8
40 2.3 3.7
50 1.7 4.3
60 1.6 5.8
70 1.0 4.9
80 1.0 6.4
90 0.8 6.5
100 0.8 8.3