The Siemens 3VA2463-5JP32-0DE0 is a 3-pole IEC frame 630 circuit breaker from the 3VA2 series, fitted with an ETU550 electronic trip unit providing LSI protection (long-time, short-time, instantaneous). It carries a breaking capacity class M rating of Icu=55kA at 415 V AC, which means it can safely interrupt fault currents up to that level without upstream cascading — critical for panel selectivity coordination in industrial distribution.
Key ratings and what they mean for fit
Rated at In=630 A continuous, with overload protection adjustable from Ir=250 A up to 630 A. That adjustment range lets you match the breaker to the actual load without swapping the frame — useful when the same panel design serves multiple motor or feeder sizes. Short-circuit protection Isd is settable from 0.6 to 9 times In, and instantaneous pickup Ii from 1.5 to 9 times In, giving the commissioning engineer flexibility to achieve selective coordination with downstream breakers. The ETU550 trip unit is LSI only (no ground-fault element built in), but the listing notes optional N-conductor protection via an external current transformer, up to 160% of the neutral rating. That accessory path keeps the main breaker compact while still addressing 4-wire systems where neutral protection is required by code.