The 5SY4350-7CV is a 3-pole miniature circuit breaker rated 50 A at 35 °C with a C tripping characteristic — magnetic trip fires between 5 and 10 times In, so it handles moderate inrush from motor starters or lighting banks without nuisance trips. The 50 A rating derates to 47.25 A at 40 °C and 44.3 A at 50 °C; if your panel ambient runs hot, size the upstream breaker accordingly. The 54 mm width (3 modular units) and 76 mm depth leave room for adjacent devices in a crowded enclosure.
The 5SY4332-7CV is the same 3-pole C-curve family but rated 32 A instead of 50 A. Both share the 15 kA breaking capacity, the same 54 mm width, and the same mounting footprint. If your BOM calls for 32 A, the 5SY4350-7CV will physically fit the same DIN-rail slot but is overrated — you would lose the overcurrent protection coordination. Stick with the ampacity your circuit demands.