What this breaker is and where it fits
The Siemens 3VA4190-4ED34-3AA0 is a UL Frame 125 molded-case circuit breaker with a 25 kA interrupting rating at 480 V AC, three-pole, and a fixed 90 A thermal-magnetic trip unit (TM210, FTFM). The overload protection Ir is permanently set at 90 A, and the short-circuit pickup Ii is fixed at 10× In. It's built for commercial and industrial distribution panels, motor control centers, and switchboards where a 125 A frame with a 90 A fixed trip is the specified overcurrent device. The TM210 curve gives a moderate magnetic pickup — not as tight as a motor-circuit protector, but faster than a straight thermal-only breaker for general distribution.
Compliance and documentation
Export Control Classification is AL:N / ECCN:EAR99 — no special licensing required for most destinations, but standard EAR documentation applies.