The interrupting capacity is 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V.
The 16 A rating holds flat from 40 °C to 55 °C, then derates to 15 A at 60 °C and 65 °C, and stays at 15 A through 70 °C. Only above 55 °C do you lose 1 A. For a 4-pole breaker at this current, the 10.6 W power loss is modest — it won't cook adjacent devices in a dense DIN-rail layout.
The 3VA1196-5ED46-0AA0 measures 70 mm deep, 101.6 mm wide, and 130 mm high. The 101.6 mm width (4 inches) for a 4-pole MCCB is typical for the SENTRON 3VA frame; it occupies the same footprint as other 3VA breakers of the same pole count. Front IP40 protection means it's sealed against tools and fingers but not against hose-down — keep it inside the panel, not on the door.