The Siemens SENTRON 5SL6213-7MB is a 2-pole miniature circuit breaker rated 13 A with a C tripping characteristic, designed for residential and infrastructure branch-circuit protection. It breaks 6 kA per EN 60898 at 400 V AC, which covers the standard fault-current duty for most final subcircuits in commercial and light-industrial panels. At 36 mm wide (2 modular width units), it occupies two standard DIN-rail positions — a compact footprint that leaves room for additional devices in a crowded enclosure. The 76 mm depth and 70 mm installation depth mean it fits flush in most distribution boards without protruding past the gland plate.
Breaking capacity and trip curve
The C-curve (trips between 5× and 10× rated current) is the go-to choice for moderate inrush loads like small motors, transformers, and fluorescent lighting banks — it holds through the starting surge without nuisance tripping, unlike a B-curve, but clears faster than a D-curve on a hard fault. The 6 kA breaking capacity per EN 60898 at 400 V AC is the standard rating for this class; it safely interrupts a bolted fault up to that level without welding the contacts or cascading upstream. Rated operational voltage reaches 440 V AC in multi-phase operation, and 250 V AC single-phase. DC rated voltage maxes at 72 V — useful for control-circuit tap-offs but not for high-voltage DC bus protection.
Panel integration notes
Snap-on DIN rail mounting, any position. IP20 with connected conductors — suitable for enclosed distribution boards, not for wet-area standalone use. Sealable design allows lockout/tagout. Halogen-free and silicon-free construction avoids corrosive off-gassing in sealed enclosures near sensitive electronics. Power loss per pole is 1.8 W at rated current in hot state — 3.6 W total for the 2-pole unit. Factor this into enclosure thermal calculations, especially when grouping multiple breakers in a small cabinet. Degree of pollution 2 and overvoltage category III suit fixed-installation mains distribution.