What this part is and what it does
The Siemens 3VA1163-1AA36-0BC0 is a SENTRON switch disconnector in an MCCB-style housing — IEC frame 160, three poles, rated for a continuous current of 63 A. It carries no overload or short-circuit protection; it's a pure disconnect for isolation and switching duty. Rated insulation voltage is 800 V, with a maximum AC operating voltage of 690 V and a DC rating of 500 V. That covers most line-level disconnects and DC bus isolation in industrial panels. The front terminal connection accepts lug or clamp conductors, and the IP40 front protection keeps debris out of the enclosure face — standard for panel-mounted gear, not for washdown zones.
Undervoltage release and auxiliary contacts
This variant ships with an undervoltage release (UVR) designed for 24 V DC control. If the control voltage drops, the UVR trips the disconnector open — a standard safety interlock for emergency-stop chains or undervoltage protection on motor feeds. Two HQ auxiliary switches (changeover contacts) are built in, giving you two CO contacts for status feedback to a PLC or indication lamp. No communication module on this unit — it's a hardwired disconnect, not a smart breaker.
Mechanical and environmental limits
Mechanical endurance is rated at 15,000 latching cycles — typical for a disconnect of this frame size used in panel isolation. Operating temperature range is -25 °C to +70 °C; storage range is -40 °C to +80 °C. Maximum power dissipation is 38 W at rated load. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — fits the standard frame footprint for DIN-rail or panel-mount integration.