The Siemens SENTRON 3VA2163-0HM32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, designed for line protection in distribution panels. It carries an ETU330 electronic trip unit with an adjustable current range from 95 A minimum to 756 A maximum — the 63 A frame is the continuous rating, not the trip setting. The 440 kA breaking capacity at 415 V (187 kA at 690 V) gives serious SCCR headroom for high-fault installations, typical of industrial main or feeder duty where a short-circuit can reach tens of kiloamps. The IP40 front protection means it's splash-resistant from the front but not sealed; mount inside a panel with a door.
The 63 A continuous rating holds across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling (cites:,). The rated insulation voltage of 800 V covers most 480/600 VAC systems with margin (cites:). The ground-fault protection function is built in (cites:).
Physical footprint: 105 mm wide, 181 mm tall, 86 mm deep (cites:,). That's a standard 3-pole MCCB width for this frame size — fits most DIN-rail or backplate layouts without surprises. The depth of 86 mm means it clears most shallow enclosures; verify gland-plate clearance if the cable entry is tight.
This is a current-production part (cites:). No end-of-life notice is on record.