The Siemens SENTRON 3VA2463-6HN32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with a maximum breaking capacity of 242 kA at 240 V AC. This is a line-protection device (not a motor-protective breaker) designed for main feeder or large sub-feed applications in industrial switchboards and panelboards. The 630 A frame means it handles the full load of a large transformer secondary, a main bus riser, or a high-current distribution point — the kind of circuit where a fault can deliver tens of kiloamps, and the breaker has to clear it without welding or venting.
Breaking capacity drops as system voltage rises: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V. At 690 V the 9 kA figure is the limiting case — if your system runs at 690 V with available fault current above that, this breaker is not the right pick. The continuous current derates with ambient temperature: 630 A at 40 °C, 612 A at 45 °C, 593 A at 50 °C, 575 A at 55 °C, 557 A at 60 °C, 538 A at 65 °C, and 520 A at 70 °C. If the panel ambient runs at 50 °C, the usable rating drops to 593 A — factor that into the load calculation.
No discontinuation notice or last-time-buy date is on record.
Dimensions: 248 mm height, 138 mm width, 110 mm depth. The 110 mm depth is the critical dimension for enclosure depth — standard 200 mm deep enclosures leave 90 mm for wiring and lug bending behind the breaker. The 138 mm width per pole (46 mm/pole) is typical for a 630 A frame; verify the mounting footprint against the existing backplate or DIN-rail adapter if retrofitting into a panel designed around a different MCCB family.
Auxiliaries and releases
No ground-fault monitoring or communication module is included on this order code.