Page 6 - B_ELSB_Cat_2022_01_MCBs

1/6 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS - TECHNICAL DETAILS 9AKK 107991 A8329
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MCBs technical details
Tripping characteristics

Tripping characteristic S800
Thermal release  Electromagnetic release 
Acc. to Tripping characteristic and rated Current Tripping time Current Tripping time
current conventional conventional hold current trip at least at
non-tripping tripping surges
current current
IEC/EN 60898- B 10 to 80 A 1.13 ∙ I n > 1 h  3 ∙ I n > 0.1 s
1
1.45 ∙ I n < 1 h  5 ∙ I n < 0.1 s
C 10 to 80 A 1.13 ∙ I > 1 h  5 ∙ I > 0.1 s
n n
1.45 ∙ I n < 1 h  10 ∙ I n < 0.1 s
D 10 to 80 A 1.13 ∙ I > 1 h  10 ∙ I > 0.1 s
n n
1.45 ∙ I < 1 h  20 ∙ I < 0.1 s
n n
IEC/EN 60947- B 0.5 to 125 A 1.05 ∙ I n > 1 h  3.2 ∙ I n > 0.1 s
2 1.3 ∙ I < 1 h  4.8 ∙ I < 0.1 s
n n
C 0.5 to 125 A 1.05 ∙ I n > 1 h  6.4 ∙ I n > 0.1 s
1.3 ∙ I < 1 h  9.6 ∙ I < 0.1 s
n n
D 0.5 to 125 A 1.05 ∙ I > 1 h  10.4 ∙ I > 0.1 s
n n
1.3 ∙ I n < 1 h  15.6 ∙ I n < 0.1 s
K 0.5 to 125 A 1.05 ∙ I > 1 h  10.4 ∙ I > 0.1 s
n n
1.2 ∙ I n < 1 h  15.6 ∙ I n < 0.1 s
KM 20 to 80 A 10.4 ∙ I > 0.1 s
n
15.6 ∙ I n < 0.1 s
UCB (DC only) 0.5 to 125 A 1.05 ∙ I n > 1 h  4.8 ∙ I n > 0.1 s
1.3 ∙ I < 1 h  7.2 ∙ In < 0.1 s
n
UCK (DC only) 0.5 to 125 A 1.05 ∙ I n > 1 h  8.8 ∙ I n > 0.1 s
1.2 ∙ I < 1 h  13.2 ∙ I < 0.1 s
n n
PV-SP 5 to 125 A 1.05 ∙ I n > 1 h  4.8 ∙ I n > 0.1 s
(DC only) 1.3 ∙ I n < 1 h  6 ∙ I n < 0.1 s
UL489 Z 10 to 100 A 1 ∙ I > 1 h 3.2 ∙ I > 0.1 s
n n
1.35 ∙ I n < 1 h 4.8 ∙ I n < 0.1 s
K 10 to 100 A 1 ∙ I > 1 h 10.4 ∙ I > 0.1 s
n n
1.35 ∙ I n < 1 h 15.6 ∙ I n < 0.1 s
UCZ (DC only) 10 to 80 A 1 ∙ I n > 1 h 8.8 ∙ I n > 0.1 s
1.35 ∙ I < 1 h 13.2 ∙ I < 0.1 s
n n
UL489B PV-S (DC only) 5 A 1.13 ∙ I n > 1 h 4.8 ∙ I n > 0.1 s
1.3 ∙ I < 1 h 6 ∙ I < 0.1 s
n n
 The indicated electromagnetic tripping values apply to a frequency of 50/60 Hz.
 The thermal release are calibrated to a nominal reference ambient temperature; for B, C, D, UCB and PVS it is 30 °C, for K, UCK it is 20 °C for Z, K and UCZ it is
25 °C, for PVS acc. to UL489B it is 50 °C.
 t > 2 h for I > 63 A
n
 t < 2 h for I > 63 A
n