What the ratings mean for fit
The 3VA1163-5EE32-0BC0 is a 3-pole IEC frame 160 molded-case circuit breaker from Siemens' 3VA1 series, rated for 63 A continuous and a breaking capacity of 55 kA at 415 V AC — class M, which means it handles moderate fault levels typical of industrial distribution panels without needing a current-limiting upstream device. The thermal-magnetic trip unit (TM220, ATFM) gives adjustable overload protection from 44 A to 63 A and a fixed short-circuit pickup at 10× In (630 A), so you can dial the Ir pot to match the cable or load without swapping the breaker body.
Built-in accessories and deployment context
This variant ships with an undervoltage release (UVR) at 24 V DC, a nut keeper kit for secure mounting, and two HQ auxiliary switches — all factory-fitted, so no field-assembly of add-on modules. The UVR drops the breaker on loss of control voltage, which is standard for emergency-stop chains or safety isolation circuits. The auxiliary switches give status feedback to a PLC or indicator lamp without extra wiring.