What this breaker is and where it fits
The Siemens 3VA1163-5ED32-0AA0-ZD00 is a 3-pole IEC frame 160 molded case circuit breaker (MCCB) with breaking capacity class M, meaning it delivers 55 kA Icu at 415 V — enough for high-fault industrial distribution panels where the upstream transformer or bus can push serious energy into a bolted fault. The 63 A fixed thermal-magnetic trip (TM210) with Ir = 63 A and Ii = 10 × In covers feeder and motor branch protection in a single device, no add-on trip unit needed. The nut keeper kit and DC Power OEM designation point to a variant built for Chinese OEM panel builders integrating into DC power systems; the breaker itself is a standard AC-rated IEC device, but the kit and OEM marking align with a specific production run.
What the ratings mean for the panel builder
The 55 kA Icu @ 415 V is the ultimate breaking capacity — the breaker can safely interrupt a fault of that magnitude once and remain functional after inspection. For selective coordination downstream, the TM210 trip curve with Ii = 10 × In (630 A magnetic pickup) gives a wide margin above motor inrush, reducing nuisance trips on start-up while still clearing hard faults fast. The fixed Ir = 63 A means no adjustment dial; the overload protection is locked at that value, so the breaker is sized for a 63 A continuous load, not a range. Mounts on standard DIN rail or panel-mount via the frame 160 footprint, with the nut keeper kit securing the terminals against vibration in OEM equipment.