The Siemens 3VA2340-6HL32-0DL0 is a 3-pole SENTRON molded case circuit breaker rated for 400 A continuous current at 40 °C ambient, with a maximum interrupting capacity of 242 kA at 240 V AC. That interrupting rating drops to 187 kA at 415 V and 440 V, and to 121 kA at 500 V — so the voltage class of your distribution determines whether this breaker clears a fault without cascading upstream. The continuous current derates above 50 °C: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C.
Auxiliary and undervoltage release configuration
The basic switch core is order code 3VA2340-6HL32-0AA0, so if you need to swap the internal switch mechanism, that's the service part. No ground-fault monitoring on this unit, and no communication module. It's a standalone thermal-magnetic or electronic-trip MCCB — no Modbus, no PROFIBUS. The trip indicator is present, so after a fault event you get a visual flag without opening the cover.
That's about 9.76 by 5.43 by 4.33 inches.