The Siemens 3VA1080-4ED32-0AA0-ZD00 is a 3-pole IEC frame 100 molded case circuit breaker rated 80 A continuous, with a fixed thermal-magnetic trip (TM210, FTFM) and a short-circuit breaking capacity of 36 kA at 415 V (class S). The Ir is fixed at 80 A and the instantaneous magnetic pickup Ii is set at 10 x In (800 A).
The fixed Ir at 80 A means the overload protection is not field-adjustable; the breaker is ordered for that exact load current. The fixed Ii at 10 x In (800 A) gives a magnetic trip threshold suited for motor or transformer inrush without nuisance tripping on start-up.
