The Siemens 3VA2463-5HN32-0AL0 is a 3-pole IEC frame 630 molded-case circuit breaker with a breaking capacity class M rating of 55 kA at 415 V. Overload protection Ir is adjustable from 250 A to 630 A, short-time pickup Isd from 1.5 to 9 times Ir, and instantaneous pickup Ii fixed at 9 times In.
The 55 kA Icu at 415 V places this breaker in the M (medium) breaking capacity class per IEC 60947-2, suitable for industrial distribution panels where fault currents are moderate but exceed the standard 36 kA class. The ETU350 LSI trip unit allows coordination with downstream feeders: the adjustable short-time delay (Isd) lets you sequence tripping so the closest breaker opens first, keeping upstream supply alive to unaffected loads.