The Siemens 3VA1063-4ED42-0AF0 is a 4-pole IEC molded-case circuit breaker in the 3VA1 frame, rated 63 A continuous with a fixed thermal-magnetic TM210 trip unit. Its 36 kA breaking capacity at 415 V AC (class S) means it safely interrupts high fault currents on industrial distribution boards without needing an upstream current-limiting fuse — the Icu rating is the maximum fault it can clear and still be usable afterward. The TM210 overload is fixed at Ir=63 A, and the short-circuit pickup is fixed at Ii=10 × In, so this is a straight swap-in replacement for a line-up that already expects those settings; no adjustment dials to verify.
The 3VA1 frame mounts on a DIN rail or panel base in a standard distribution board. The included nut keeper kit secures the breaker to the busbar assembly without the nuts spinning during torque-down — a detail that saves time on a panel-build line. The N conductor is unprotected (solid neutral), so this breaker is configured for a 3-phase + N system where the neutral is not switched or protected. The factory-fitted auxiliary switch (HQ) and trip alarm switch (HQ) give remote status indication without additional wiring labor.