The Siemens 3VA4125-6ED34-3AA0 is a 3-pole molded-case circuit breaker from the 3VA4 series, UL Frame 125, rated for 65 kA interrupting capacity at 480 V. It ships with a TM210 thermal-magnetic trip unit, fixed at 25 A overload protection (Ir = 25 A) and a short-circuit pickup of 12 x In (Ii = 12 x 25 A = 300 A). This is a line-protection breaker — not a motor-protection device — so it's sized for feeder or branch-circuit duty where the load is resistive or general-purpose, not an inductive motor start profile.
Production status is active (current lifecycle stage). The product class is C — manufactured or produced to order, which means it's not a stocked shelf item; it's built against a customer order and cannot be reused or returned for credit. Plan your lead time accordingly: this is a make-to-order SKU, not a fast mover you pull from a bin. RoHS compliance is confirmed since 13-05-19. REACH Article 33 disclosure applies: the part contains lead (CAS 7439-92-1) above 0.1% w/w. Export control is AL N / ECCN EAR99 — no special license required for most destinations.
Mounts in a standard panel enclosure on a DIN rail or direct-mount plate. The packaging dimensions (472 x 396 x 213 mm) give you the shipping box size, not the breaker footprint — the breaker itself fits a 3-pole 125 A frame footprint. Terminal lugs accept copper or aluminum conductors per UL 486A-486B. For a 25 A fixed-trip breaker, the line and load conductors should be sized for at least 25 A continuous, but the breaker's frame is rated for 125 A, so the same enclosure can accept a higher-rated trip unit later if needed.