MCCB with 242 kA interrupting capacity — what that means for your panel
The Siemens SENTRON 3VA2063-6HN32-0DA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at 40 °C through 50 °C, with no derating needed across that band. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V — numbers that tell you this breaker is built for high-fault locations like transformer secondaries or large motor control centers where available fault current can exceed 100 kA. At 690 V it still clears 4 kA, so it handles most industrial line-to-line voltages in a mixed-voltage panel.
Panel integration — dimensions and mounting
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep. It mounts on a DIN rail or can be screw-fixed to a backplate. The 3-pole footprint is standard for a 63 A frame; plan for a 105 mm wide slot in your enclosure layout. No auxiliary contacts are pre-wired — if you need alarm or status contacts, they must be added externally.