The Siemens SENTRON 5SY3006-6 is a 1P+N miniature circuit breaker rated 6 A with a B tripping characteristic, breaking capacity of 4.5 kA per EN 60898 at 230 V AC.
The 6 A rating and B-curve mean this breaker trips between 3 and 5 times rated current — typically 18 to 30 A — making it suited for resistive or lightly inductive loads like lighting circuits or small heating elements where inrush is low. The 1P+N configuration switches both phase and neutral, which is required in some national wiring regulations (e.g., UK, parts of Asia) and simplifies isolation at the final circuit. The compact 18 mm width (1 width unit) and 76 mm depth fit standard 35 mm DIN-rail enclosures with a 70 mm installation depth.