What this MCCB carries and where it fits
The Siemens SENTRON 3VA2463-6KP32-0CH0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, designed for line protection in industrial power distribution. It carries a thermal derating curve from 630 A at 40 °C down to 450 A at 70 °C — the number you spec for a warm panel is the derated figure, not the 40 °C sticker. Breaking capacity hits 242 kA at 240 V and 187 kA at 415 V, dropping to 121 kA at 500 V and 9 kA at 690 V; that 9 kA at 690 V is the practical limit for 690 V line-side faults, so verify your available fault current at that voltage before committing the BOM line.
Trip settings and auxiliaries
Adjustable trip range runs from 945 A minimum to 5 670 A maximum — that's 1.5x to 9x the 630 A frame, giving you room to tune for motor-start inrush or transformer magnetizing without nuisance tripping. The breaker ships with an undervoltage release (UVR) and a 2-auxiliary-switch plus 1-trip-alarm-switch HQ configuration, so it's ready for remote status and safety chain integration out of the box. A trip indicator is present, and the design includes a communication function for network monitoring.
Physical fit and environment
Dimensions are 248 mm high, 138 mm wide, 110 mm deep — a standard 3-pole MCCB footprint that drops into SENTRON panel mounting plates and DIN-rail adapters without re-drilling. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C, so it survives a cold warehouse or a hot enclosure summer. Maximum power loss is 164.5 W at full load; factor that into your enclosure thermal calculation to avoid derating the breaker further.