The Siemens SENTRON 3VA2463-7HN32-0KA0 is a 3-pole molded case circuit breaker rated for 630 A continuous current, built around the ETU350 electronic trip unit for line protection. It carries a shunt trip (STL) auxiliary release and a voltage trigger, but no undervoltage release, auxiliary contacts, communication module, or ground-fault monitoring — this is a straightforward main breaker or large feeder breaker, not a multifunction device.
Interrupting capacity and thermal derating
Interrupting capacity is 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V — these are high-end fault-clearing numbers that place this breaker in the large-service-entrance or heavy-industrial feeder class, not a downstream distribution panel. The thermal derating curve is published from 40 °C (630 A) through 70 °C (520 A), so you can size it for a warm enclosure without guessing.
Panel fit and integration
Dimensions are 110 mm deep, 138 mm wide, 248 mm tall — a standard MCCB footprint that drops into a SENTRON panelboard or a standalone enclosure with the appropriate mounting base. Maximum power loss is 162 W, so factor that into your enclosure thermal budget. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. No trip indicator on the front, so plan for a remote indication circuit if needed.