The Siemens 3VA2463-5HN32-0CC0 is a SENTRON 3VA2 molded case circuit breaker rated for 630 A continuous current at 40 °C, 3-pole, configured for line protection. It carries an undervoltage release (UVR) and two HQ auxiliary switches, so it's ready for remote status and shunt-trip integration out of the box.
Interrupting capacity and thermal derating
Interrupting capacity is voltage-dependent: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V. That 9 kA at 690 V is the weak point — if your fault current at 690 V exceeds that, this breaker isn't the right pick for that bus. Thermal derating is published in 5 °C steps from 40 °C to 70 °C: 630 A at 40 °C, 612 A at 45 °C, 593 A at 50 °C, 575 A at 55 °C, 557 A at 60 °C, 538 A at 65 °C, and 520 A at 70 °C. If the panel ambient runs at 50 °C, you're sizing for 593 A, not 630 A.
Physical fit and panel integration
Dimensions: 138 mm wide, 248 mm tall, 110 mm deep. That 138 mm width is a 3-pole frame — check your backpanel gland-plate cutout and busbar spacing before committing the drill pattern. Power loss at full load is 164.5 W. That's heat that has to leave the enclosure — factor it into your thermal budget if the panel is sealed or tightly packed.