The Siemens SENTRON 3VA2463-6HL32-0AD0 is a 3-pole molded case circuit breaker rated for 630 A continuous at 40 °C, with an insulation voltage of 800 V. Breaking capacity hits 242 kA at 240 V, 187 kA at 415/440 V, 121 kA at 500 V, and 40 kA at 690 V, so it handles high-fault panels without cascading upstream. The 110 mm depth, 138 mm width, and 248 mm height footprint matches the SENTRON 3VA frame standard; it carries three auxiliary switches (HQ type) for status feedback back to the PLC or SCADA.
Current derating and thermal budget
Above that, the curve drops predictably: 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. Maximum power loss is 162 W, which matters for enclosure heat rise — factor it into your panel thermal calcs if you're running near the top of the range.
What's inside the can — release and auxiliaries
The ETU320 release handles LSI protection (long-time, short-time, instantaneous) with no communication or phase-failure detection. Three HQ auxiliary switches are integrated — these are the form-C contacts that tell the control system the breaker state. If you need those, this isn't the variant; the base switch (3VA2463-6HL32-0AA0) and the auxiliary trip (3VA9608-0BB24) are the building blocks this code starts from.
Environmental limits and mechanical endurance
For high-cycle applications, factor in electrical derating per the manufacturer's curve.