The Siemens 3VA2340-6HL32-0AD0 is a SENTRON 3VA2 molded case circuit breaker rated for 400 A continuous at 40 °C, with an ETU320 electronic trip unit and three poles. It's built for line protection — the version that sits at the feeder or main breaker position in a distribution panel, not a motor-protection or ground-fault variant.
Above 50 °C it steps down: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. The maximum power loss of 96 W at rated load means the breaker dissipates heat into the enclosure; account for that in your thermal budget, especially when ganging multiple breakers side by side.
Interrupting ratings are given at five voltage levels: 242 kA at 240 V, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 40 kA at 690 V.
Trip unit and auxiliary contacts
It's the mid-range electronic trip in the 3VA2 family, giving you selectivity tuning without the full metering package of the ETU600.