The Siemens SENTRON 3VA2340-7HN32-0BH0 is a 3-pole molded case circuit breaker rated for 400 A continuous current at 40 °C, with a maximum breaking capacity of 330 kA at 240 V. That 330 kA figure is the interrupting rating at the lowest voltage — at 415 V it still clears 242 kA, and at 690 V it holds 7.5 kA. The 400 A frame is thermally rated to carry full load continuously at 40 °C through 50 °C; above that, the continuous rating steps down to 385 A at 55 °C and 340 A at 70 °C, so a panel builder should check ambient temperature inside the enclosure before committing the BOM line. That switch complement is enough to signal breaker position and trip state back to a PLC or status panel without an external interposing relay. The UVR will trip the breaker if control voltage drops below its dropout threshold — a standard requirement for emergency-stop circuits and safety-related disconnect schemes where loss of control power must open the main contacts.
The 138 mm width for a 3-pole frame is typical for this class; verify the mounting footprint against the existing panel cutout if you are retrofitting into a panel originally built for a different MCCB brand. Maximum power loss is 98.5 W at rated current. That loss figure drives enclosure ventilation sizing — in a sealed stainless steel enclosure at 50 °C ambient, the heat rise from this breaker alone may require forced air or a larger cabinet to stay within the 70 °C operating maximum.