... in IEC60947-2 Pole: 3 or 4 Rated Ultimate Short-circuit Breaking Capacity Icu(kA)(effective value) ... , 100, 120 AC690V: 50, 65, 75 Rated Ultimate Short-circuit Breaking Capacity Icu(kA)(effective value) AC400V: 50 ... , 80, 100 AC690V: 50, 65 Rated Short-circuit making Capacity Icm(kA)(peak) AC400V: 176, ... 220 AC690V: 105, 143, 165 Rated Short-circuit Withstand Current (1s)Icw(kA)(effective value) ...