The Siemens 3VA4120-5ED34-3AA0 is a 3-pole molded case circuit breaker from the 3VA4 series, UL Frame 125, rated 20 A continuous with a fixed thermal-magnetic trip unit (TM210). The overload protection is permanently set at Ir = 20 A, and the short-circuit pickup is fixed at Ii = 15 × In (300 A). Breaking capacity is 35 kA at 480 VAC, class M — enough to handle high-fault industrial panel feeds without cascading upstream breakers. This is a current-production part (lifecycle status: active). Because it's classified as Product class C — made to order, not stocked on a shelf — lead time depends on the manufacturing queue.
RoHS compliant since 13-05-19.