The interrupting ratings climb to 52.5 kA at 240 V and 32 kA at 415 V — enough for most distribution panelboard and motor branch-circuit fault duties on 400 V grids.
The 16 A rating holds flat from 40 °C to 50 °C; above that it derates gradually to 14.4 A at 70 °C (–). Plan your load at 14.4 A if the ambient inside the cabinet hits 70 °C. The 52.5 kA at 240 V and 32 kA at 415 V are the short-circuit breaking capacities — the fault current this breaker can safely clear without welding contacts or rupturing the case. At 690 V it still handles 7.5 kA, which covers most industrial line-to-line faults on 690 V systems. For a fixed 16 A branch, that's fine; if you need field-adjustable settings, you'd look at the 3VA2 series with electronic releases.
Integration and auxiliary contacts
The auxiliary contacts give status feedback to the PLC or annunciator panel. The dimensions (70 mm deep, 76.2 mm wide, 130 mm high) are the standard SENTRON 3VA1 footprint; it clips onto the same DIN rail as the rest of the 3VA family, so a panel laid out for a 3VA1010 will take this without re-drilling.