The Siemens SENTRON 3VA2163-6HN32-0AB0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed as the panel warms. That 63 A holds the zone for a 63 A bus or feeder tap without having to oversize for temperature rise. Interrupting capacity hits 242 kA at 240 V, stepping down to 187 kA at 415 V and 440 V, then 121 kA at 500 V, and 3.7 kA at 690 V.
Sizing and coordination
Rated for line protection (cable/feeder protection, not motor or generator duty). The 63 A frame carries a fixed 63 A continuous rating — no adjustable thermal or magnetic trip on this variant, so it's a straight 63 A feeder breaker. Power loss is 4 W maximum, low enough that multiple breakers in a row don't force a wider enclosure.
Dimensions are 86 mm deep, 105 mm wide, 181 mm tall — fits a 3-pole MCCB footprint common across the SENTRON 3VA series. The -0AB0 suffix indicates the basic switch variant with 2 HP auxiliary switches and no auxiliary release.