The Siemens 3VA9447-0HC15 is a synchronizable motorized operating mechanism (SEO) for 3VA63/64 molded-case circuit breakers, running on 24 V DC and shipped with the SEO-COM communications adapter integrated. This is a panel-mount accessory — the SEO mounts onto the breaker's front face and provides motor-driven open/close control, enabling remote tripping and automatic reclosing sequences in distribution panels or motor control centers. The SEO-COM adapter handles the communications interface; no separate module purchase needed.
Class B return-restricted part: Siemens requires direct partner contact for returns, so order accuracy matters. RoHS compliant since January 1, 2016. REACH Article 33 applies — the part contains lead (CAS 7439-92-1) above the 0.1% threshold, so downstream notification may be required for EU industrial end-users.
Integration Notes for Panel Builders
24 V DC coil supply: confirm your control transformer or power supply delivers clean DC within the SEO's operating range. The SEO-COM adapter draws its power from the same 24 V DC bus. Packaged as a single piece (120 x 90 x 85 mm) — plan DIN-rail space adjacent to the breaker for the SEO body and cable routing.