630 A MCCB with 220 kA interrupting capacity — selectivity headroom for large distribution
The Siemens 3VA1563-6EF32-0AA0 is a 3-pole SENTRON molded case circuit breaker rated for 630 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release and a maximum interrupting capacity of 220 kA at 240 V AC. That interrupting rating drops to 154 kA at 415 V and 440 V, 121 kA at 500 V, and 73.5 kA at 690 V — so it handles high-fault utility feeds or transformer secondaries where upstream coordination demands a 200 kA-class device. The 630 A frame is derated above 50 °C: still 630 A at 50 °C, then 618 A at 55 °C, 607 A at 60 °C, 595 A at 65 °C, and 583 A at 70 °C. The adjustable instantaneous pickup (li) goes up to 6300 A, giving selectivity headroom against downstream feeders.
Dimensions and panel fit — 210 mm wide, 320 mm tall, 120 mm deep
The breaker measures 210 mm wide, 320 mm tall, and 120 mm deep (8.27 x 12.6 x 4.72 inches). That width is standard for a 630 A frame — verify the mounting footprint against the existing busbar or panel cutout before ordering.
Comparison with 5SQ2370-2YA05 — different release, same frame class
The 5SQ2370-2YA05 is a functionally similar 3-pole MCCB from the same SENTRON family, also rated for 630 A continuous current and comparable interrupting capacities. The key difference is the overcurrent release design: the 3VA1563-6EF32-0AA0 uses a TM240 thermal-magnetic release, while the 5SQ2370-2YA05 carries a different release variant. If your BOM specifies a TM240 release, the 3VA1563-6EF32-0AA0 is the direct fit; the 5SQ2370-2YA05 would require a release swap or a coordination review. Panel dimensions and mounting pattern are identical for the 630 A frame, so no rewiring is needed if the release type is acceptable.