The Siemens 3VA1063-3ED32-0AH0 is a SENTRON molded case circuit breaker rated for 63 A continuous current at 40 °C, and it holds that rating all the way up to 50 °C before it starts to derate — 60.48 A at 55 °C, 56.7 A at 70 °C. That thermal curve matters when you're packing breakers into a warm panel and don't want nuisance trips on a summer afternoon. Breaking capacity is 75.6 kA at 240 V, drops to 52.5 kA at 415 V, and 32 kA at 440 V. At 690 V it still clears 7.5 kA. That covers most industrial service-entrance and feeder-duty scenarios without an upstream current-limiting fuse. It's a straight-ahead line-protection breaker for branch circuits where you don't need selectivity tuning or remote trip signalling beyond the built-in auxiliary contacts.
Footprint and integration
The 3VA1063-3ED32-0AH0 measures 76.2 mm wide, 130 mm tall, and 70 mm deep. That gives you a dedicated alarm contact on trip, separate from the aux position-follow contacts — useful for a remote fault lamp or a PLC digital input without wiring through the aux stack.