The Siemens 5SL4310-8CC is a SENTRON miniature circuit breaker (MCB) — a 3-pole unit with a D tripping characteristic, rated 10 A at 400 V AC and a 10 kA breaking capacity per EN 60898. Suitability for residential buildings and infrastructure is stated, but the 10 kA SCCR and overvoltage category III also make it a common choice in commercial distribution boards and light industrial sub-panels.
Ratings that matter for fit
The 10 A rating at 30 °C derates to 9.24 A at 40 °C, 8.83 A at 45 °C, 8.41 A at 50 °C, and 7.96 A at 55 °C — so if the breaker lives in a warm enclosure or next to other heat sources, the actual continuous current it can carry drops. The 3-pole design with no neutral switching means it breaks all three phases but leaves the neutral through. The 3-module-width footprint (54 mm wide) and 76 mm depth fit standard DIN-rail enclosures.