What this part is and what it does
The Siemens SENTRON 3VA1163-1AA36-0AF0 is a 3-pole switch disconnector built in an MCCB (molded case circuit breaker) form factor. It is rated for a continuous current Iu of 63 A, with a maximum AC operational voltage of 690 V at 50/60 Hz and a maximum DC operational voltage of 500 V. This part is designed for isolation and switching of loads without overcurrent or short-circuit protection — it has no overload release and no short-circuit protection built in. The front terminal connection accepts clamp-type wiring, and the unit carries one auxiliary switch plus one trip alarm switch (HQ type).
Fit and panel integration
The 3VA1163-1AA36-0AF0 shares the same footprint as other 3VA1 frame-160 devices: 70 mm depth, 76.2 mm width, 130 mm height. It mounts on a DIN rail or via the MCCB-style screw-down base. The IP40 protection on the front means it is suited for dry indoor panels; if the enclosure itself is not sealed, keep washdown or dust away from the front face. The 38 W maximum power loss at full load should be factored into the panel thermal budget — it is not negligible in a densely packed cabinet.
What the ratings mean for the buyer
The 63 A rated continuous current (Iu) is the maximum load the disconnector can carry continuously without exceeding temperature limits. Because this is a switch disconnector — not a circuit breaker — it will not trip on overload; the load circuit must be protected upstream or downstream by a separate overcurrent device. The 800 V rated insulation voltage (Ui) gives headroom for 690 V AC systems. Mechanical endurance is rated at 15,000 operating cycles, which is typical for this class of MCCB-style switch.