The Siemens SENTRON 3VA2340-5HL32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with no derating needed up to 50 °C — it holds full 400 A through that range. Above that, it steps down: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. That thermal curve is your real-world sizing guide for a panel that runs warm; if your enclosure ambient hits 60 °C, you're effectively buying a 370 A breaker. Breaking capacity is the other headline: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. At 690 V the 7.5 kA figure is lower but still adequate for most motor-circuit applications at that voltage level.
Mounts in a standard distribution panel or switchboard enclosure. The 3-pole form factor fits standard MCCB cutouts; the undervoltage release (UVR) is factory-fitted — verify that your control voltage matches the release rating before wiring. Rated for line protection (distribution feeder or large branch circuit).