The Siemens SENTRON 5SL4313-6CC is a 3-pole miniature circuit breaker rated 13 A with a B tripping characteristic, designed for final-distribution protection in residential and infrastructure builds. It breaks 10 kA per EN 60898 at 400 V AC — enough for most commercial lighting and small-power circuits where the prospective fault current stays under that ceiling. The B-curve (3-5× In magnetic trip) means it clears fast on moderate overloads, which suits resistive loads and general-purpose wiring where nuisance tripping from inrush isn't a concern.
Panel fit and mounting reality
Occupies 3 modular width units (54 mm wide) on a DIN rail, with a 70 mm installation depth behind the panel face.
The 10 kA breaking capacity is the key number for coordination — it tells you this MCB can safely interrupt a fault up to 10 kA at 400 V AC without welding its contacts or failing catastrophically. That's the standard domestic/commercial light-industrial rating; if your panel's upstream transformer can push more fault current, you need a higher-rated device or a current-limiting upstream breaker. The energy limitation class 3 means it lets through a moderate amount of let-through energy — fine for cable protection in most final circuits. Power loss per pole at rated current is 2.1 W hot, so three poles dissipate about 6.3 W total; in a crowded enclosure, factor that into thermal calculations.