The Siemens 5SL4515-7CC is a 1+N-pole miniature circuit breaker from the SENTRON 5SL4 series, rated 1.6 A with a C-trip curve and a 10 kA breaking capacity at 230 V. It trips fast enough on a hard short but tolerates the inrush of a motor starting or a capacitor bank charging.
Snap-on DIN rail mounting for standard 18 mm per pole width. The 1+N-pole format occupies two modules on the rail — one for the protected phase, one for the switched neutral that opens simultaneously with the phase.