The Siemens 3VA2163-5HN32-0AJ0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Breaking capacity hits 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. The 63 A rating holds flat from 40 °C through 70 °C — that means you don't have to oversize for elevated panel ambient. For a line-side feeder on a 60 A continuous load in a warm enclosure, this breaker fits without a temperature derate calculation.
Panel fit and auxiliary switch configuration
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. No ground-fault monitoring version is included. The 105 mm width is standard for a 3-pole MCCB in this frame class — it occupies one 105 mm module position in the distribution board.