The Siemens SENTRON 3VA2463-7HN32-0CL0 is a 3-pole molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with a massive 330 kA interrupting capacity at 240 VAC. That breaking capacity drops to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V — so the real-world SCCR you can count on depends on your system voltage. The 630 A frame means this breaker handles main feeder or large motor protection duty in a 480 V panel, not branch circuits.
Ratings and what they mean for fit
Continuous current derates with ambient temperature: 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 your panel ambient runs above 40 °C, you need to apply the derating — the breaker won't hold 630 A at 50 °C. The 164.5 W maximum power loss matters for enclosure thermal management; that's heat that stays inside the panel. The 330 kA breaking capacity at 240 V is what you'd expect for a high-interrupting MCCB on the secondary side of a large transformer. At 480 V (not explicitly listed, but between the 440 V and 500 V figures), you can interpolate roughly 200–220 kA — still very high, suitable for main service entrance or high-fault industrial distribution.
Auxiliary and release configuration
This variant ships with an undervoltage release (UVR) and a complement of auxiliary switches: 2 auxiliary switches, plus 1 trip alarm switch, plus 1 electrical alarm switch (HQ type). That gives you remote status indication — breaker on/off, trip event, and a separate alarm contact for the protection trip. The UVR means the breaker drops out when control voltage is lost, which is standard for safety circuits or emergency-off chains.
Physical fit and mounting
Dimensions: 248 mm height, 138 mm width, 110 mm depth. That's a standard SENTRON 3VA frame size for the 630 A rating — mounts on a backplate or DIN rail via the appropriate adapter. The 3-pole footprint is what you'd expect for a three-phase feeder breaker. No communication function on this variant; it's a standalone thermal-magnetic or electronic-trip MCCB (the basic switch is 3VA2463-7HN32-0AA0).