The Siemens 5SL6216-7YA is a 2-pole miniature circuit breaker (MCB) with a C-trip curve, rated 16 A at 230 V and a 6 kA breaking capacity. The C-curve means it trips between 5 and 10 times rated current, so it handles the inrush of motor starters and small transformers without nuisance tripping, while still protecting the branch circuit against short circuits. The 6 kA interrupting rating at 230 V is the standard domestic and light commercial panel rating in many markets; it safely clears a fault up to that level without welding the contacts or cascading upstream.
This 2-pole MCB snaps onto standard 35 mm DIN rail in a distribution board or sub-panel. The 16 A C-curve rating makes it a common choice for lighting circuits, socket outlets, and general-purpose loads in residential and commercial final distribution. The 6 kA breaking capacity is sufficient for most building installations where the prospective short-circuit current at the panel does not exceed that level.