What the ratings mean for fit
The 3VA2463-5HL32-0KK0 is a Siemens 3VA2 IEC frame 630 molded-case circuit breaker with breaking capacity class M — 55 kA at 415 V AC. That Icu rating means it can safely interrupt a fault current up to 55 kA without damage to itself or upstream gear, which is the figure you coordinate against for selective tripping in a distribution panel. The ETU320 electronic trip unit provides LI (long-time and instantaneous) protection: overload pickup adjustable from 250 A to 630 A, and short-circuit pickup from 1.5 to 9 times the rated current In. That adjustability lets you fine-tune the breaker to the actual load without swapping trip units.
Integration notes
The breaker ships with a shunt trip (left side, 208-277 V AC 50/60 Hz or 220-250 V DC) and one auxiliary switch changeover contact. The shunt trip allows remote tripping from a safety circuit or emergency-stop chain — wire it to a dry-contact output from a PLC or safety relay. The auxiliary switch provides a status feedback signal for the panel HMI or SCADA. Mounts in a standard IEC distribution board; the nut keeper kit is included for secure busbar connection.