The Siemens SENTRON 5SQ2160-2YA10 is a 1-pole miniature circuit breaker rated for 10 A at 240 V AC, with a B tripping characteristic and a 3 kA breaking capacity per EN 60898.
The B-curve (tripping characteristic class B) means the magnetic trip activates at 3 to 5 times rated current — 30 to 50 A for this 10 A breaker. That suits circuits with low inrush, like lighting or general-purpose receptacles, where you don't need the higher inrush tolerance of a C-curve.
Deployment context
The single-pole design (1P) switches only the phase; neutral is not switched (no neutral conductor switching). Rated for AC/DC voltage, but the 3 kA breaking capacity is specified at AC per EN 60898. IP20 protection means it's suitable for dry indoor enclosures only — no washdown or outdoor exposure. The 55 mm installation depth fits standard shallow enclosures.