The Siemens 5SY4104-8CC is a 1-pole SENTRON miniature circuit breaker with a D tripping characteristic, rated 10 kA breaking capacity per EN 60898 at 400 V AC.
Key Ratings & Fit
Rated 400 V AC (single-phase or multi-phase) and 230 V single-phase supply, with a maximum DC operating voltage of 72 V. The 10 kA breaking capacity per EN 60898 covers most industrial panel secondary faults; for UL 1077 / CSA C22.2 No. 235 installations the rating is 5 kA. The combined terminal design (top and bottom) accepts both busbar and wire connections without separate adapters.
Environmental & Mechanical
Ambient temperature range -40 °C to 75 °C, with derating on humidity (max 95% at 55 °C, 55% at 70 °C, 35% at 75 °C). Halogen-free and silicon-free construction. Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz. Mechanical service life 10 000 operating cycles typical. Sealable for tamper-proof installations. IP20 with connected conductors — intended for enclosed panel mounting, not washdown.
Snap-on DIN rail mount, 18 mm width (1 MWU), 76 mm depth, 90 mm height, 70 mm installation depth. Any mounting position. Neutral conductor is not switched — single-pole design only.