The Siemens 3VA1116-1AA32-0AC0 is a SENTRON switch disconnector in a 3-pole MCCB-style housing, rated for 160 A continuous current. It is not a molded case circuit breaker — it provides no overload or short-circuit protection. Its job is safe isolation under load: you close it to pass power, open it to guarantee a visible air gap for lockout/tagout. The 160 A rating means it handles full-load current on a feeder or a large motor branch circuit, but the downstream protection devices handle the faults. Rated for AC operation up to 690 V and DC up to 500 V, it fits into 400 V and 690 V distribution panels common in European and IEC-spec installations. The 2 kA short-time withstand rating at 1 s and 0.5 s tells you the switch can survive a fault current of that magnitude while the upstream breaker clears — it is not a breaking device, but it must hold closed through the fault event.
The 3VA1116-1AA32-0AC0 shares the same 70 mm depth, 76.2 mm width, and 130 mm height as the 3VA1 frame breakers. That means it drops into the same panel cutout and busbar system as the SENTRON MCCBs — no re-drilling or adapter plates if you are swapping a breaker for a disconnect in an existing layout. Main circuit connection is via busbar on front terminals, so the bus stack runs across the front face, not the rear. No special sealing for washdown; keep it inside the enclosure.