The Siemens 3VA2563-5MN32-0AE0 is a 3-pole IEC molded-case circuit breaker in the 3VA2 series, frame size 1000, with a breaking capacity class M rated at Icu=55 kA at 415 VAC. It carries the ETU350M electronic trip unit configured for motor protection with LSI (long-time, short-time, instantaneous) characteristics. The continuous current rating In is 630 A, with overload protection Ir adjustable from 250 A to 630 A, short-time pickup Isd from 3 to 15 times Ir, and instantaneous pickup Ii fixed at 15 times In.
The 55 kA Icu at 415 V places this breaker in the high-interrupting-capacity tier for IEC applications. For motor protection duty, the ETU350M with LSI curve allows coordination with upstream and downstream devices — the adjustable Ir band (250–630 A) lets you match the full-load amps of a large motor, while the Isd setting (3–15×Ir) gives selectivity headroom against branch-circuit faults.