What this part is and what it does
The Siemens 3VA1163-1AA36-0KC0 is a SENTRON 3VA1 IEC frame 160 switch disconnector — a three-pole, 63 A rated device that isolates a circuit under load but provides no overload or short-circuit protection. It is designed as a manual disconnect, not a breaker, so it sits downstream of an upstream protective device. The unit carries a shunt trip release (STL) rated for 220-250 V DC or 208-277 V AC, meaning it can be remotely tripped via a control signal, and it comes with two HQ auxiliary switches for status feedback to a PLC or panel indicator. Rated insulation voltage is 800 V, with a maximum operational voltage of 690 V AC 50/60 Hz and 500 V DC. The part is rated for a short-time withstand current of 2 kA at both 0.5 s and 1 s — this is the fault current it can carry momentarily without damage, not a breaking capacity. It is not a circuit breaker; it is a load-break switch intended for isolation and emergency switching.
Where it fits in the panel
The 3VA1163-1AA36-0KC0 mounts on a DIN rail or panel via the 3VA1 frame base. Dimensions are 70 mm deep, 76.2 mm wide, and 130 mm tall — a compact footprint that matches other 3VA1 frame devices, so it can be swapped into an existing panel layout without re-drilling. Front terminal connections for the main circuit accept lug or clamp-type conductors, and the two auxiliary switches are wired via the front-accessible terminals. IP40 on the front face keeps out tools and fingers; the rest of the enclosure relies on the panel environment.
What the ratings mean for your application
The 63 A rated continuous current (Iu) sets the maximum load this switch can carry continuously without exceeding its thermal limits. For motor loads, size it to the full-load current of the motor plus a margin; for resistive loads, it can run at 63 A continuous. The shunt trip release allows remote tripping from an E-stop or safety PLC — the 220-250 V DC / 208-277 V AC coil voltage means it needs a control supply in that range. The two HQ auxiliary contacts provide a clean signal for status monitoring; they are rated for the same control voltage as the shunt trip. Operating temperature range is -25 °C to +70 °C, with storage from -40 °C to +80 °C. Maximum power loss at rated current is 38 W, which is dissipated through the frame — ensure adequate ventilation in a sealed enclosure. The latching endurance of 15 000 operations is the mechanical life; electrical life will be lower depending on the switched load.