The Siemens 3VA4125-4ED34-3AA0 is a 3-pole circuit breaker in the 3VA4 family, built on a UL Frame 125 with a breaking capacity class S rated at 25 kA @ 480 V. It is configured for line protection with a TM210 thermal-magnetic trip unit, fixed thermal overload protection set at Ir = 25 A, and fixed short-circuit protection at Ii = 12 × In. This is a fixed-setting breaker — no field adjustment on the overload or magnetic pickup — so the BOM line needs to match the 25 A load exactly.
RoHS compliance is confirmed since 13-05-19. Note the REACH Article 33 disclosure: Lead CAS-No. 7439-92-1 is present above 0.1% w/w, which may require downstream notification if the part is incorporated into products sold into the EU.
Export control classification is AL: N / ECCN: EAR99, so no special licensing is needed for cross-border shipment to most destinations. The packaging dimensions of 472 × 396 × 213 mm give a sense of the shipping cube for a single unit.