The Siemens 3VA2340-7HN32-0BA0 is a SENTRON 3VA2 molded case circuit breaker rated for 400 A continuous current at 40 °C, with a 3-pole configuration and line-protection design. It carries a 330 kA interrupting capacity at 240 VAC, 242 kA at 415/440 V, 187 kA at 500 V, and 7.5 kA at 690 V — meaning it can safely clear fault currents up to those levels without upstream cascading, sized for high-available-fault installations like transformer secondaries or large bus risers. The continuous current rating holds at 400 A through 50 °C ambient, then derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. The auxiliary switch is not fitted, so no remote status indication from the breaker itself.
This is a standard SENTRON 3VA2 frame size — mounts via screw-clamp or optional DIN-rail adapter. Check the existing panel's backplate layout against the 138 mm width and 110 mm depth, especially if replacing a different-frame MCCB where bus-bar centers or gland-plate clearance may differ.