Page 192 - B_ELSB_Cat_2022_01_MCBs

1/192 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

Maximum permissible earth-fault loop impedance ZS at U0 = Determined according to DIN VDE 0100-520 sheet
230 V~ b to ensure compliance with the operation conditions 2:2002-11(source impedance = 300 mΩ and conductor
pursuant to IEC 60364-4. temperature 70 °C. The internal resistance of the MCB is
Operating time < 0.4 s; at 400 V~ < 0.2 s and at > 400 V~ < already considered.
0.1 s The instantaneous release of the MCB ensures an
operating time of ≤ 0.1 s (TN system).

S 200 and S 200 M
Rated B C D K Z
current I A
n max. ZS max. ZS max. ZS max. ZS max. ZS
q q q q q
0.5 - 40.4 18.5 28.4 145.6
1 - 21.4 10.0 14.9 74.6
1.6 - 13.5 6.3 9.4 46.8
2 - 10.8 5.1 7.5 37.6
3 - 7.2 3.4 5.1 25.1
3 - 7.2 3.4 5.1 25.1
4 - 5.4 2.5 3.7 18.8
6 7.3 3.5 1.6 2.4 12.5
8 5.5 2.6 1.1 1.7 9.3
10 4.3 2.0 0.8 1.3 7.4
13 3.2 1.5 0.6 1.0 -
16 2.6 1.1 0.4 0.7 4.5
20 2.0 0.8 0.3 0.5 3.5
25 1.5 0.6 0.2 0.4 2.8
32 1.1 0.4 0.1 0.2 2.1
40 0.9 0.3 0.0 0.1 1.6
50 0.6 0.2 0.0 0.0 1.2
63 0.4 0.1 0.0 0.0 0.9
b U0 = rated voltage against earthed conductor; for U0 = 240 V~ is ZS · 1.04; for U0 = 127 V~ is ZS · 0.55