What this MCCB is and where it fits
The SENTRON 3VA2163-7MS36-0AH0 is a 3-pole molded case circuit breaker rated 63 A continuous at ambient temperatures from 40 °C up to 70 °C — no derating needed across that range. Its interrupting capacity hits 330 kA at 240 V AC and stays at 242 kA through 440 V, then drops to 187 kA at 500 V and 3.7 kA at 690 V. That kind of high-fault headroom makes it a fit for main or feeder breakers in heavy industrial panels where available fault current is high, not just branch protection. This is the starter protection variant (design of the product: starter protection), so it's tailored for motor branch circuits — the trip curve and magnetic pickup are set to handle inrush without nuisance trips while still clearing a bolted fault fast. It ships with the basic switch 3VA2163-7MS36-0AA0 and carries 2 auxiliary switches plus 1 trip alarm switch (HQ type) built in, so you get status feedback and a remote trip indication without adding external blocks.
Dimensions and panel fit
At 86 mm deep, 105 mm wide, and 181 mm tall, this MCCB fits standard SENTRON 3VA panel cutouts. The 105 mm width is the same across the 63 A frame in this series, so swapping between variants doesn't mean re-drilling the gland plate. Mounting is screw-clamp to the backplate, not DIN rail — make sure your enclosure has the clearance for the 181 mm height above the bus bars.