The 5SY4213-7CV is a 2-pole miniature circuit breaker with a C13 tripping curve and a 15 kA interrupting capacity at 400 V AC. The C13 curve means it holds through moderate inrush (typical of motor starters or capacitor banks) and trips on sustained overload above 13× rated current. Rated for 400 V line-to-line, this 2-pole breaker fits single-phase or two-leg three-phase circuits where you need overcurrent and short-circuit protection on both poles simultaneously.
Snap-on DIN rail mount, standard 35 mm profile. Occupies two 18 mm pole widths. The C13 curve and 15 kA rating mean it pairs naturally with a downstream contactor or motor starter in a sub-distribution panel — the breaker provides the SCCR, the contactor handles the switching duty.