What this breaker delivers
The Siemens 3VA1163-5GE42-0AA0-ZD00 is a 4-pole IEC frame 160 circuit breaker with a 63 A thermal-magnetic trip (TM220, ATFM). Overload protection is adjustable from 44 A to 63 A, and the short-circuit pickup is fixed at 10 x In. The breaking capacity class M delivers 55 kA at 415 V — enough for high-fault panelboards and distribution downstream of a transformer.
The 4-pole configuration covers three-phase plus full neutral protection at 100%, which is required for some DC power OEM builds in China, as noted in the description.