The Siemens SENTRON 3VA1163-6EE32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 63 A continuous current (Iu) at up to 40 °C with no derating — it holds 63 A through 50 °C, then drops to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. The interrupting capacity tells the real story: 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, then stepping to 17 kA at both 500 V and 690 V. That 220 kA figure at 240 V means it can clear a massive fault on a low-voltage distribution bus without upstream coordination — useful for high-fault panels where a standard 65 kA or 100 kA breaker would cascade. The TM220 thermal-magnetic release gives fixed thermal and magnetic trip settings; no trip indicator, no undervoltage release, no ground-fault monitoring, no communication function — it's a straightforward distribution breaker, not a multiframe platform.
Integration and footprint
The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep. That 70 mm depth is the body dimension — account for handle throw and wiring space in the enclosure. IP40 on the front means it's protected against tools and wires >1 mm, but not against water ingress; mount it inside a panel, not exposed to washdown. Rated insulation voltage Ui is 800 V, operating voltage up to 690 V AC. Power loss maxes at 17.3 W — factor that into enclosure thermal calculations if you're packing multiple breakers in a small cabinet.