The Siemens 3VA1463-4EF32-0KB0 is a 3-pole IEC frame 630 circuit breaker with a 36 kA breaking capacity at 415 V (class S). The TM240 thermal-magnetic trip unit gives you adjustable overload protection from 440 A to 630 A (Ir) and short-circuit pickup adjustable from 4 to 8 times In (Ii). That adjustability lets you set the breaker to the actual load without swapping trip units. This order code also ships with a shunt trip accessory rated for 208–277 V AC 50/60 Hz or 220–250 V DC, plus two auxiliary switch changeover contacts. Both are factory-installed, so you don't have to open the breaker cover to add them in the field.
Deployment context: panel integration
This is a fixed-mount, 3-pole breaker sized for a standard IEC distribution panel or motor control center. The frame 630 footprint matches Siemens 3VA1 busbar and mounting accessories. The shunt trip and aux switches are wired to the breaker's internal terminals; plan for control wiring from the shunt trip coil to your remote trip source and from the aux switches to your monitoring input.