Siemens 5SY4415-7 SENTRON MCB — 4-pole, 1.6 A, C-curve, 10/35 kA
The Siemens 5SY4415-7 is a 4-pole miniature circuit breaker from the SENTRON series, rated 1.6 A at AC with a C tripping characteristic. It breaks fault currents up to 10 kA per EN 60898 and 35 kA per IEC 60947-2, giving you two SCCR ratings to work with depending on the standard your panel follows.
The 1.6 A rating is the continuous current at 35 °C; above that, you need to derate: 1.5 A at 45 °C, 1.47 A at 50 °C, 1.44 A at 55 °C, and 1.4 A at 60 °C. If your enclosure runs hot, factor that in. The 10 kA breaking capacity under EN 60898 covers most standard commercial/industrial distribution boards; the 35 kA rating under IEC 60947-2 gives you headroom for high-fault installations like main switchboards or near large transformers.