MCB for high-fault panels
The Siemens 5SY4513-8CV is a 1P+N miniature circuit breaker with a D13 tripping characteristic and a rated ultimate breaking capacity (Icu) of 15 kA at both 230 V and 400 V.
D-curve selectivity note
In a selectivity study with an upstream SENTRON 5SY4 or 5SL6 breaker, the D13's higher instantaneous threshold typically provides better coordination than a B or C curve of the same amp rating, reducing nuisance trips on start-up.