The Siemens 3VA1163-1AA36-0AA0 is a SENTRON switch disconnector in an MCCB-style housing, rated for 63 A continuous current across the full operating temperature range from -25 °C to 70 °C with no derating needed — the same 63 A holds at 40 °C, 50 °C, 60 °C, and 70 °C. This is a pure disconnecting means: it provides no overload or short-circuit protection (no trip unit, no voltage trigger, no undervoltage release). It is designed for applications where you need a manual load-break switch with visible isolation, not a circuit breaker.
What the ratings mean for fit
The 63 A rating is flat from 40 °C to 70 °C ambient — no thermal derating curve to calculate. That simplifies panel design in warm enclosures or near heat-generating equipment. The 690 V AC / 500 V DC rated operating voltage covers most industrial line voltages (400 V, 480 V, 600 V class) with headroom. The 800 V rated insulation voltage confirms it can be used in 690 V systems without additional insulation coordination. The 38 W maximum power loss at rated current is the heat you need to vent; factor it into enclosure sizing. Mechanical service life is 15,000 operating cycles typical — adequate for a disconnecting switch used for infrequent isolation or maintenance lockout, not for daily motor starting. The IP40 front protection means it is suitable for dry indoor panels; not for washdown or outdoor locations.
Integration and mounting
The 3VA1163-1AA36-0AA0 uses a front-terminal connection for the main circuit, with a 76.2 mm width (roughly 3 inches — standard for a 3-pole MCCB-style device on DIN rail). Depth is 70 mm, height 130 mm. It accepts a motor drive as an optional extension (ordered separately). No auxiliary contacts or auxiliary releases are included; if you need signaling or shunt trip, this base variant does not carry them.