The Siemens 3VA1163-3GD42-0AA0-ZD00 is a 4-pole circuit breaker from the 3VA1 IEC frame 160 family, rated In=63A with a fixed overload protection Ir=63A and fixed short-circuit protection Ii=10 x In. Its breaking capacity is class N, delivering Icu=25kA at 415V AC — sufficient for most industrial distribution panels where fault levels stay under that threshold. The TM210 line protection curve and FTFM (Fixed Thermal Fixed Magnetic) trip unit mean no adjustment dials; the protection settings are locked at the factory. That is a deliberate choice for OEM builds where repeatability and tamper-proof settings matter more than field flexibility.
What the ratings mean for fit
The 63 A continuous rating with fixed Ir=63 A means this breaker cannot be downsized in the field — the overload pickup is the nameplate rating. That is fine if your load current is stable at or below 63 A; if you need adjustability, you would look at the 3VA2 adjustable-trip sibling. The Ii=10 x In (630 A short-circuit pickup) is a fixed magnetic threshold, typical for TM210 line protection on motor or distribution feeders where high inrush is expected. The 25 kA Icu at 415 V is the maximum fault current the breaker can interrupt once; for systems with lower prospective fault levels (say 18 kA or below), this is over-specified, which adds margin but no penalty. The 4-pole configuration with 100% N conductor protection means the neutral pole is fully rated and protected — required on 4-wire systems where the neutral carries load harmonics or unbalanced return current.
Integration notes
The 3VA1 frame 160 mounts on a standard DIN rail or can be screw-fixed to a backplate. The nut keeper kit included in this variant simplifies panel wiring — the terminal nuts stay captive, reducing dropped hardware during assembly. For a panel OEM or maintenance team, that is a small but real time-saver on repetitive builds. The breaker is IEC-rated; if UL 489 listing is required for the installation, verify the specific UL file number for this variant, as the OEM-China designation may carry IEC-only certification.