The Siemens SENTRON 3VA1163-1AA32-0JC0 is a 3-pole switch disconnector in the 3VA1 IEC frame 160, rated at 63 A with no overload or short-circuit protection — it is a pure disconnecting means, not a circuit breaker.
63 A flat derating to 70 °C
That simplifies panel sizing in warm enclosures or near heat-generating gear. Maximum power loss is 38 W at rated load, so the thermal budget for the enclosure is modest.
Shunt trip and auxiliary switch complement
The integrated shunt trip (STL) accepts 110-127 V DC or AC 50/60 Hz, letting you trip the disconnector remotely from a PLC or E-stop circuit. Two HQ auxiliary switches (form C) provide position feedback — one for open/closed status, the second for a separate signal path. No undervoltage release is fitted, and no voltage trigger is present; the only remote-trip path is the shunt coil.
Mounting and connection
Footprint is 70 mm deep by 76.2 mm wide by 130 mm tall — a standard 3-pole MCCB-style envelope that fits most DIN-rail or panel-mount cutouts. Main circuit connection is via busbar with front terminals, so it accepts common busbar systems without adapters. An optional motor drive is listed as a field-installable extension.