What this part is and what it does
The Siemens 3VA1163-1AA42-0AD0 is a SENTRON switch disconnector in an MCCB-style housing (IEC frame 160), rated for 63 A continuous current across 4 poles. It provides visible isolation for a circuit — it makes and breaks load current but carries no overload or short-circuit protection. The part is designed for applications where disconnection is needed downstream of a separate protective device, such as a main breaker or fuse.
Key ratings and what they mean for fit
Rated continuous current Iu is 63 A — sized for a 63 A busbar tap or feeder. Max AC operational voltage is 690 V 50/60 Hz; max DC is 600 V. That covers 400 V and 480 V three-phase systems with headroom, and also handles common 500–600 V DC bus voltages in drives or solar combiners. The 4-pole configuration allows switching of three phases plus neutral in TN or TT systems, or four-phase DC circuits.
Where it fits in the panel
Dimensions are 70 mm deep, 101.6 mm wide, 130 mm tall. Front terminal busbar connection matches the SENTRON busbar system. IP40 on the front. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C.
Auxiliary contacts and options
Comes with 3 auxiliary switches HQ (high-quantity, meaning multiple changeover contacts) — 3 CO contacts total. No undervoltage release, no voltage trigger, no communication function. Motor drive is available as an optional add-on (product extension optional motor drive = Yes). Maximum power loss is 38 W.