The Siemens 3VA1063-3ED32-0KA0 is a SENTRON molded case circuit breaker (MCCB) sized for line protection in distribution panels. It carries a 63 A continuous rating at 40 °C, holds that rating steady through 50 °C, then derates to 58 A at 70 °C — useful to know if your panel runs hot near a drive or transformer. Three poles, rated insulation voltage of 800 V, and a shunt trip release (STL) for remote tripping. The 75.6 kA breaking capacity at 240 V drops to 52.5 kA at 415 V and 7.5 kA at 690 V; that SCCR headroom matters for fault coordination downstream.
Panel fit and footprint
The 3VA1063-3ED32-0KA0 snaps onto a DIN rail — 70 mm deep, 76.2 mm wide, 130 mm tall. That 3-inch width is standard for a 3-pole MCCB in the SENTRON 3VA family; if you're swapping an older 3VA or 3VL frame, check the busbar pitch matches. Shunt trip release means you'll need a control wire run for the STL coil; no undervoltage release on this variant, so a loss-of-mains trip would require external relay logic.
What the breaking capacities mean for coordination
The 75.6 kA at 240 V is the maximum fault current this MCCB can safely interrupt at that voltage — enough for most industrial service entrances. At 415 V it's 52.5 kA, still high enough for secondary distribution. At 690 V it drops to 7.5 kA, so if you're on a 690 V system with high fault current, you'll need upstream current-limiting fuses or a higher-rated frame. The TM210 thermal-magnetic release (fixed thermal, fixed magnetic) means no interchangeable trip units; you set it once and it stays.