The Siemens 5SY6616-7 is a 4-pole (3P+N) miniature circuit breaker from the SENTRON series, designed for 400 V AC (440 V max multi/single-phase) at 50/60 Hz. It carries a C-curve tripping characteristic, meaning it handles moderate inrush currents typical of motor and lighting loads without nuisance trips. The interrupting capacity is rated 6 kA per EN 60898-1 and 15 kA per IEC 60947-2, with a DC rating of 15 kA at 60 V (max 72 V). For UL 1077 installations, the rating is 5 kA. IP20 with connected conductors.
Halogen-free and silicon-free construction. Operating temperature range -40 °C to 75 °C, with humidity limits of 95% at 55 °C, 55% at 70 °C, and 35% at 75 °C. Sealable for lockout/tagout. Neutral conductor is switched (3P+N). Suitability for mechanical engineering and industry applications.