The Siemens 5SL1310-7MB is a SENTRON miniature circuit breaker (MCB) — a 3-pole, 10 A, C-curve device rated for 230/400 V AC with a 3 kA breaking capacity per IEC 60947-2.
The C-curve trips between 5 and 10 times rated current (50–100 A for this 10 A unit), which is the standard choice for general-purpose loads like lighting, socket outlets, and small appliances where moderate inrush is expected. The 3 kA breaking capacity per IEC 60947-2 tells you it can safely interrupt a fault current up to 3 kA at 400 V; that's sufficient for most residential and light commercial sub-distribution boards, but if your available fault current at the panel exceeds 3 kA you'll need an upstream current-limiting device or a higher-rated MCB. It's rated for 230 V single-phase and 400 V three-phase, 50/60 Hz, and also carries a DC rating of 72 V maximum — useful for some DC sub-circuits, but verify polarity and arc extinction for DC loads. The mechanical service life is 4,000 operating cycles typical, which is standard for a residential-grade MCB; for high-cycle applications (frequent switching) consider an industrial-rated breaker.
Dimensions are 90 mm height, 54 mm width (3 MW), 76 mm depth, with an installation depth of 70 mm.