What you're getting with the 3VA1163-3ED36-0AA0
Siemens SENTRON 3VA1163-3ED36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current with a TM210 thermal-magnetic overcurrent release. It's built for line protection — think main feeder or large subfeed in a distribution panel, not motor branch circuit duty where you'd want a motor-protective breaker. The TM210 release gives you fixed thermal and magnetic trip settings, so there's no dial to mis-set on install. Breaking capacity climbs to 75.6 kA at 240 V AC, drops to 52.5 kA at 415 V, and holds at 11.9 kA at 690 V. That's a lot of fault current for a 63 A frame — it'll clear a hard short on a 400 V industrial feeder without the upstream breaker having to flinch. Insulation voltage is rated 800 V, so it's comfortable in 480/277 V or 400/230 V panels with headroom.
Thermal derating and panel fit
At 40 °C it carries the full 63 A. Derating starts at 55 °C (62 A) and drops to 58 A at 70 °C. If this breaker lives in a hot enclosure — near a transformer or in a non-ventilated cabinet — factor that 60 °C column (61 A) as your real-world limit. Power loss at full load is 17.3 W, which adds to the enclosure heat budget. Footprint: 130 mm tall, 76.2 mm wide, 70 mm deep. That's a 3-inch wide body — standard for a 63 A frame in the SENTRON 3VA line. It'll bolt into a panel that was laid out for a 3VA1110 or 3VA1112 without drilling new holes, but check the lug kit orientation; the line and load connections are the same pattern across the 3VA family.