What this MCCB carries
The Siemens 3VA2463-5HN32-0DH0 is a SENTRON molded case circuit breaker (MCCB) rated for 630 A continuous at 40 °C, with a 3-pole configuration and a trip indicator. Its interrupting capacity hits 187 kA at 240 V and 121 kA at 415 V and 440 V, tapering to 75.6 kA at 500 V and 9 kA at 690 V — so on a 480 V distribution board it clears faults up to 75.6 kA without cascading upstream. The unit includes an undervoltage release (UVR) and two auxiliary switches plus one trip alarm switch (HQ).
Thermal derating and panel fit
At 45 °C it carries 612 A, at 50 °C it carries 593 A, and at 55 °C it carries 575 A — a linear drop of roughly 18 A per 5 °C rise. By 70 °C the continuous rating is 520 A, so a panel builder who expects a 630 A bus at 50 °C needs to size the breaker for the actual ambient, not the 40 °C nameplate. The physical footprint is 248 mm high, 138 mm wide, and 110 mm deep — a standard MCCB envelope that fits existing SENTRON mounting plates and busbar connections without re-drilling.
What the ratings mean for selection
The 5 670 A rated current (minimum and maximum) is the frame's thermal-magnetic trip setting range — this breaker is adjustable, not fixed at 630 A. The 630 A continuous rating at 40 °C is the standard UL/IEC nameplate; the breaker can be dialed down to protect a smaller feeder if needed. Power loss at full load is 164.5 W, which matters for enclosure ventilation calculations. Operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C. No ground-fault monitoring or communication function is built in — this is a plain line-protection MCCB with electromechanical auxiliaries.