The Siemens SENTRON 3VA2340-5HL32-0HL0 is a 3-pole molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with a rated insulation voltage of 800 V. Breaking capacity is the headline: 187 kA at 240 V, 121 kA at 415 V, 121 kA at 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. Thermal derating is published: full 400 A up to 50 °C, then 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. The integrated auxiliary trip is order code 3VA9688-0BL30. There is a voltage-trip indicator and a mechanical trip indicator — useful for quick fault diagnosis on the floor.
No DIN-rail mounting; it bolts directly to the panel backplate or onto a mounting plate. Maximum power loss is 96 W — account for that heat in the enclosure sizing if the breaker is enclosed.