The Siemens 3VA1163-1AA36-0DC0 is a SENTRON switch disconnector in the 3VA1 IEC frame 160 family, rated at 63 A continuous current (Iu) across 3 poles. It is explicitly a switch disconnector — not a molded case circuit breaker — meaning it provides no overload or short-circuit protection. The product designation and description confirm it is built for isolation and switching duty only, with a latching endurance of 15 000 operations. Two HQ auxiliary switches (changeover contacts) are integrated, providing status feedback for the disconnector position.
Rated continuous current Iu = 63 A means this disconnector is sized for a 63 A feeder or motor branch circuit — it must be paired with upstream overcurrent protection (fuse or MCCB) since the device itself has none. The rated insulation voltage Ui = 800 V and maximum operational voltage Ue = 690 V AC / 500 V DC define the system voltage limits; at 690 V AC the part can safely isolate the load. The short-time withstand ratings (Limited To 1 S = 2 kA, Limited To 0.5 S = 2 kA) indicate the disconnector can carry a fault current of 2 kA for up to 1 second without damage — adequate for coordination with upstream protective devices that clear faster.
The 3VA1163-1AA36-0DC0 measures 130 mm height × 76.2 mm width × 70 mm depth. Front terminal connection for the main circuit uses clamp-type terminals; the 3-pole footprint matches the standard 3VA1 frame 160 cutout. The auxiliary switches and UVR are factory-installed — no field-assembly of these accessories required, which simplifies BOM line items and panel wiring. An optional motor drive can be added (product extension / optional / motor drive = Yes) for remote switching.