What the ratings mean for fit
The Siemens SENTRON 5SL6313-7MB is a 3-pole miniature circuit breaker rated 13 A with a C-curve trip characteristic. The C-curve means it trips at 5–10× rated current — standard for general-purpose loads like lighting, socket outlets, and small motor circuits where moderate inrush is expected. The 6 kA breaking capacity (per both EN 60898 and IEC 60947-2) tells you it can safely interrupt a fault current up to 6 kA at 400 V AC without welding or arcing over. That's the standard residential and light commercial rating; if your panel's prospective short-circuit current exceeds 6 kA, you need a higher-rated breaker upstream. Rated supply voltage is 400 V AC, with a maximum of 440 V AC in multi-phase operation. Frequency is 50/60 Hz. The breaker occupies 3 modular width units (54 mm) on a DIN rail — standard for a 3-pole MCB in a SENTRON distribution board. Depth is 76 mm; installation depth is 70 mm. Mounting position is any, so it fits horizontal or vertical busbars without derating.
Panel integration and environment
Snap-on DIN-rail mount, 3 MW units wide. IP20 with connected conductors — protected against finger contact but not washdown; keep it inside a closed panel. Rated for pollution degree 2 and overvoltage category III, which covers fixed-installation distribution boards in residential and infrastructure buildings. Operating temperature range is -40 °C to 75 °C, so it handles unheated enclosures or outdoor kiosks. Halogen-free and silicon-free construction — no corrosive off-gassing if the breaker arcs internally.
Mechanical and electrical endurance
Typical mechanical service life is 20 000 operating cycles — that's the handle being switched on and off under no-load. The breaker accepts supplementary devices (auxiliary contacts, shunt trips, undervoltage releases) for remote signaling or emergency-off circuits. Power loss per pole at rated current in hot state is 1.9 W; three poles total 5.7 W heat dissipation inside the enclosure — factor that into your thermal budget if the panel is densely packed.