The Siemens 3VA1163-5GD42-0AA0-ZD00 is a 4-pole circuit breaker on the 3VA1 IEC frame 160, rated 63 A with a breaking capacity class M — Icu of 55 kA at 415 V. The thermal-magnetic TM210 trip unit gives fixed overload protection at Ir=63 A and fixed short-circuit protection at Ii=10 × In, so no field adjustment of the trip settings — it's a set-and-forget line protection breaker.
The 63 A overload rating (Ir) is fixed, so this breaker protects a circuit whose continuous load is right at or below 63 A — no dial-down for a smaller load. The short-circuit trip at 10 × In (630 A) is a magnetic instantaneous trip, typical for motor branch circuits or distribution feeders where you want to ride through inrush without nuisance tripping. The 100% N conductor protection means the neutral pole is rated for full phase current, not a reduced neutral — important for harmonic-rich loads or single-phase line-to-neutral faults in a 4-wire system. The nut keeper kit included is a small detail that saves a panel builder's time: it keeps the terminal nuts captive during wiring, so no dropped hardware inside the enclosure.
The 4-pole footprint takes up four module widths in a distribution board — plan your enclosure fill factor accordingly. Line and load terminals accept copper conductors up to the frame's rated cross-section; torque values per the manufacturer's installation instructions on the nameplate.