The Siemens 3VA2163-0HN32-0AA0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current with an ETU350 electronic trip unit. That 63 A holds flat across the full operating range from 40 °C to 70 °C — no derating curve to chase for a warm panel. The 440 kA breaking capacity at 415 V AC means it can interrupt fault currents up to that level without upstream coordination issues; at 690 V AC it still clears 187 kA. Insulation voltage is rated 800 V, so it handles 480 V and 600 V class systems with headroom. This is a straight feeder or main breaker for a distribution panel where the trip curve and selectivity come from the ETU350 settings, not auxiliary hardware.
DIN-rail integration and panel footprint
Mounts on standard DIN rail. Dimensions: 105 mm wide, 181 mm tall, 86 mm deep — the 86 mm depth (3.39 in) is the key number for gland-plate clearance and cover depth.