What this part is and what it does
The Siemens SENTRON 3VA1163-1AA36-0DA0 is a 3-pole switch disconnector in the 3VA1 IEC frame 160 family, rated for 63 A continuous current (Iu) with no integral overload or short-circuit protection — it's a disconnect-only device, not a molded case circuit breaker. The built-in undervoltage release (UVR) coils at 208-230 V AC 50/60 Hz, so if control power drops, the main contacts open automatically. That makes this part a fit for applications where you need a load-break disconnect with undervoltage protection but want the overcurrent coordination handled upstream or by a separate breaker.
Key ratings and what they mean for fit
Rated continuous current Iu of 63 A — this is the thermal current the switch can carry continuously without exceeding temperature rise limits. The rated insulation voltage Ui is 800 V, and the maximum operational voltage hits 690 V AC (50/60 Hz) or 500 V DC. That 690 V AC ceiling covers most 400 V and 480 V industrial distribution systems with headroom. Mechanical endurance is 15 000 operating cycles, which is typical for a disconnect in a panel that sees daily but not continuous switching. Front IP40 protection means it's splash-proof from the front but not sealed against hose-down — keep it inside a panel enclosure.
Deployment context and panel fit
The 3VA1163-1AA36-0DA0 mounts in a standard 3-pole MCCB footprint — 70 mm deep, 76.2 mm wide, 130 mm tall — so it drops into the same DIN-rail or screw-mount slot as a 3VA1 frame breaker. Front terminal connections (clamp-type) accept copper conductors; the terminal arrangement is identical to the breaker siblings, so no rewiring if swapping from a 3VA1 circuit breaker to this disconnect. The optional motor drive (product extension optional) allows remote switching if you need to add it later.