What this MCCB does on the line
The Siemens SENTRON 3VA2463-6HN32-0HA0 is a 3-pole molded case circuit breaker rated for a continuous current of 630 A at 40 °C, designed for line protection in industrial distribution panels. Its breaking capacity reaches 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V — so it clears high fault currents across common low-voltage network levels without needing an upstream current-limiting fuse. The breaker includes a shunt trip release (STL) for remote tripping, but no undervoltage release, no auxiliary switch, and no ground-fault monitoring — the buyer adds those externally if needed.
Thermal derating and panel fit
Rated 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 — the full load rating only holds below 40 °C ambient. Dimensions are 248 mm high, 138 mm wide, and 110 mm deep — fits standard MCCB panel cutouts for this frame size. Maximum power loss is 162 W at rated load; factor that into enclosure ventilation or forced cooling if the panel is tightly packed.