Integrator's note — 5SL6263-6
The Siemens 5SL6263-6 is a 2-pole miniature circuit breaker from the SENTRON range, B-curve, rated 63 A at 30 °C per EN 60898 and IEC 60947-2. Breaking capacity is 6 kA under both standards — sufficient for most residential and light infrastructure sub-distribution boards where the prospective fault current is known to stay under that limit. Rated voltage is 400 V AC; maximum multi-phase operating voltage is 440 V AC. The 36 mm width (2 modular units) fits standard DIN-rail enclosures. Derate to 59.18 A at 40 °C and 52.93 A at 55 °C if the panel ambient runs warm.
Panel fit & environment
Mounts in any position on 35 mm DIN rail; installation depth is 70 mm, overall depth 76 mm. IP20 with connected conductors — suitable for enclosed distribution boards only, not washdown or outdoor exposure. Overvoltage category III, pollution degree 2. Sealable, halogen-free, silicon-free. Mechanical service life typical 10 000 operating cycles.