Interrupting and thermal performance
At 415 V it still holds 187 kA, and at 690 V the rating drops to 7.5 kA, so confirm the available fault current at your system voltage before specifying. The thermal derating curve is flat from 40 °C to 50 °C at 400 A, then steps down: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C.
Auxiliaries and integration
No ground-fault monitoring or communication module on this order code; those are separate add-on accessories. The basic switch variant is 3VA2340-6HL32-0AA0, which omits the UVR and aux switches.
Physical fit
That 138 mm width is a 3-pole MCCB footprint — verify the mounting base and door cutout against your existing panel layout, especially if replacing a different brand or series. The depth of 110 mm includes the arc chamber and terminals; allow clearance for cable bending radius behind the panel.