The Siemens 3VA1440-7MH32-0JH0 is a 3-pole molded case circuit breaker in the 3VA1 IEC frame 630 series, rated 400 A with a breaking capacity of 110 kA at 415 V (class C). This breaker comes with starter protection TM120M, AM, meaning it's set up for motor protection without overload relays — the TM120M thermal-magnetic trip provides short-circuit protection only, with an adjustable instantaneous trip range of 8 to 16 times In (3,200 to 6,400 A). That's a wide window for coordinating with motor inrush without nuisance tripping.
For a 400 A frame, that's a high-interrupting rating, suited for installations close to large transformers or where the utility-side fault current is high. The shunt trip left 110-127 V AC/DC allows remote tripping — useful for emergency-stop circuits or interlocking with fire-alarm systems. The two auxiliary switch changeover contacts (H 1 TR) give status feedback (open/closed/tripped) to a PLC or indication panel.