Ratings and protection profile
The 3VA4125-4ED24-3AA0 is a 2-pole molded case circuit breaker from the Siemens 3VA4 UL Frame 125 series, sized for line protection in 480 VAC panels. Its 25 kA interrupting capacity at 480 V means it can clear a bolted fault up to that level without welding its contacts or rupturing the case — a key spec for panel SCCR compliance under UL 508A. Overload protection is fixed at 25 A (Ir = 25 A, TM210 thermal-magnetic trip), with short-circuit pickup fixed at 12 times In (300 A instantaneous). No dials or adjustment bands — what you see on the nameplate is what the circuit sees. That makes it a straight drop-in for a BOM that calls out a 25 A fixed-trip MCCB.
Lifecycle and sourcing
Note the product class: it is manufactured or produced to order, which means it is not a stocked shelf item. Lead time and pricing are confirmed at quote time against an RFQ — typical for Siemens 3VA4 breakers in this frame size. Export controls are straightforward: AL N / ECCN EAR99, so no special licensing for most destinations.
Compliance and documentation
RoHS compliant since May 13, 2019. REACH Article 33 duty to inform applies — the part contains lead (CAS 7439-92-1) above 0.1% w/w, so a safety data sheet or substance declaration should accompany the shipment for EU end users.