Siemens 5SY4610-8CC11 miniature circuit breaker, 400 V, 10 kA interrupting capacity, D-curve, 10 A rated current, 3+N-pole, for railway applications.
The Siemens 5SY4610-8CC11 is a 3+N-pole miniature circuit breaker rated 10 A with a D-curve trip characteristic, designed for 400 V railway applications where fault currents can reach 10 kA. The D-curve (10–20× In) means it tolerates the high inrush of inductive loads like contactor coils, relays, and small transformers common in rolling stock auxiliary circuits — a standard B- or C-curve would nuisance-trip on the same transient.
It is rated 10 kA interrupting capacity at 400 V, which is the standard fault-clearing level for Siemens 5SY series MCBs used in railway distribution panels.
Yes — the description explicitly states it is designed for railway applications, with the D-curve and 3+N-pole configuration matching the typical auxiliary supply architecture in rolling stock.
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