The 3VA1163-3EE32-0AA0-ZD00 is a 3-pole IEC frame 160 circuit breaker from Siemens' 3VA1 line, rated 63 A continuous with an interrupting capacity of 25 kA at 415 V (breaking capacity class N). The TM220 overload unit gives you an adjustable thermal trip band from 44 A to 63 A, so you set Ir to match the cable or load, not the breaker's In. Short-circuit pickup is fixed at 10 x In (630 A magnetic), which is typical for motor-circuit coordination — lets the motor start without nuisance trips while still catching a bolted fault.
Mounts on standard DIN rail in the enclosure. The nut keeper kit (included per the order code) holds the busbar or cable lug fasteners in place during assembly — saves a hand when you're torquing down the line and load terminals in a tight panel. Frame 160 footprint means it occupies roughly the same DIN space as other 160 A frame breakers; check the depth clearance for the TM220 trip unit housing.