Panel fit and protection profile
The Siemens SENTRON 5SQ2570-0KA13 is a 2-pole miniature circuit breaker in a 1P+N configuration — it switches the line and switches the neutral, not just breaks it. That matters for single-phase final circuits where you want the neutral isolated when the breaker trips, which is standard practice in many European distribution boards. The C tripping characteristic (magnetic trip between 5 and 10 times In) means it is sized for moderate inrush loads like small motor starters, lighting banks, or transformer primaries; the 13 A thermal rating handles continuous resistive loads up to that mark. The 3 kA breaking capacity per EN 60898 is the standard residential and light-commercial fault-interruption rating at 240 V AC — adequate for most sub-distribution boards where the upstream device limits the prospective fault current.
DIN-rail footprint and enclosure integration
Occupies 2 width units (roughly 36 mm) on a standard DIN rail, with an installation depth of 55 mm — shallow enough to fit most 80 mm deep enclosures without crowding the gland plate. The IP20 protection class means it is protected against solid objects larger than 12.5 mm (fingers) but not against moisture; install inside a rated enclosure if washdown or outdoor exposure is expected. Neutral conductor switching is built in, so no separate neutral bar or link is required downstream of the breaker for the switched neutral path.