The Siemens 5SL4550-7CC is a 1+N-pole miniature circuit breaker rated 50 A with a C-trip curve, breaking capacity of 10 kA at 230 V. It sits in the Basic Devices family — the standard residential and light-commercial line for Siemens. The C-curve means it trips between 5 and 10 times rated current, so it handles motor inrush and transformer energization without nuisance tripping, but clears fast on a hard short. The 10 kA interrupting rating at 230 V is enough for most panelboard and sub-distribution applications where the prospective fault current stays under that level.
Snap-on DIN rail mount for 35 mm symmetrical rail per EN 60715. The 1+N-pole format occupies two modular widths — one for the protected phase, one for the switched neutral. The neutral pole opens and closes with the phase pole, so it disconnects both conductors on a fault. Terminal design accepts copper conductors up to 25 mm², which is adequate for the 50 A rating without needing a reducer.
Group Code P310 and Product Group 3823 are the Siemens internal classification — useful for cross-referencing in their catalog or when ordering through a Siemens partner portal. Product class B means return is restricted; coordinate with your Siemens contact if a return is needed.