Siemens 5SL4410-6 SENTRON 4P B-10A MCB
The Siemens 5SL4410-6 is a 4-pole miniature circuit breaker from the SENTRON series, rated 10 A at 400 V AC with a B tripping characteristic and a 10 kA breaking capacity certified to both EN 60898 and IEC 60947-2. That 10 kA rating means it safely clears a bolted fault up to that level without upstream coordination issues in a residential or infrastructure panel — the listed suitability for residential buildings/infrastructure confirms the intended install base. The B-curve trips between 3 and 5 times rated current, so it's sized for lighting and general-purpose loads where inrush is modest, not motor starts. Mechanical life is rated at 10 000 operating cycles typical, and the unit is sealable — useful for utility or submetering applications where tamper evidence is required. The housing is halogen-free and silicon-free, which matters for installations with sensitive contacts or environmental compliance requirements.
Mounting and integration
Occupies 4 modular-width units (72 mm) on a DIN rail. Depth is 76 mm, installation depth 70 mm. Mounting position is any, so it fits vertical or horizontal panel layouts without derating. IP20 with connected conductors — standard for enclosed distribution boards; no washdown rating, so keep it inside the cabinet. Overvoltage category III and pollution degree 2, which is the typical spec for fixed-installation distribution boards downstream of the main incoming supply.
Thermal derating and ambient limits
Rated 10 A at 30 °C ambient. At 40 °C it derates to 9.24 A; at 45 °C to 8.8 A; at 55 °C to 7.96 A. If the panel ambient runs hot — say, a crowded enclosure near a furnace line — factor that derating into the load schedule. The maximum ambient is 55 °C with up to 95% humidity; storage range is -40 to 75 °C.