The 32 A rating at 40 °C ambient is the continuous current it can carry without tripping; at higher ambients it derates slightly — still 32 A at 50 °C, then 31 A at 55 °C, 30 A at 70 °C (–). The breaking capacity tells you the maximum fault current it can safely interrupt at a given voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V (–).
The 3VA1032-3ED36-0AH0 measures 70 mm deep, 76.2 mm wide, 130 mm tall (–) — standard 3-pole MCCB footprint for a 32 A frame. With a maximum power loss of 10.6 W, it won't cook adjacent devices in a tightly packed panel, but keep the ambient derating curve in mind when grouping breakers.