The 3VA1063-2ED36-0JC0 is a Siemens SENTRON 3-pole molded case circuit breaker rated for 63 A continuous at 40 °C ambient, and it holds that rating all the way to 50 °C before it starts to taper — 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, 58 A at 70 °C. Breaking capacity tells you what fault it can clear without welding its contacts or blowing apart: 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, 7.5 kA at both 500 V and 690 V.
The 3-pole footprint is the same as other SENTRON 3VA breakers in this frame size, so it swaps in without re-drilling the mounting plate. That covers unheated warehouses and outdoor cabinets in most climates short of arctic conditions.