The Siemens 3VA2580-5JP32-0KB0 is a 3-pole IEC frame 1000 circuit breaker from the 3VA2 series, carrying a breaking capacity class M rating of Icu=55kA at 415V. It's fitted with an ETU550 electronic trip unit providing LSI protection — long-time (overload), short-time, and instantaneous — with an In rating of 800A. The overload protection Ir is adjustable from 320A to 800A, short-circuit protection Isd from 0.6 to 10x In, and instantaneous Ii from 1.5 to 12x In. A left-side shunt trip for 208-277V AC 50/60Hz and two auxiliary switches are built in.
The 3VA2 frame 1000 mounts in a standard switchboard or panel enclosure. The ETU550 LSI trip unit allows coordination with downstream breakers — the adjustable Isd and Ii bands give selectivity headroom for feeder circuits. The shunt trip on the left side is wired for remote tripping from a safety circuit or emergency stop; verify the coil voltage matches the control supply (208-277V AC).