The Siemens 3VA9447-0FK47 is a SENTRON door-coupling rotary operating mechanism designed for emergency-off applications on 3VA5/6 400/600 molded case circuit breakers. It ships as a complete assembly with door interlocking, a 24 V DC illumination kit, and a door-open position accessory.
Sealing and deployment
Rated IP65 and NEMA 4, 4X. The operator face withstands hose-down cleaning and outdoor weather. The door interlocking feature prevents opening the enclosure door while the breaker is in the ON position, which is a typical safety requirement for motor control centers and machine disconnect panels.
Panel fit
The mechanism measures 138 mm wide by 94 mm high. That footprint matches the standard door cutout for 3VA5/6 breakers in the 400/600 A frame range. Verify the door thickness and handle projection against your enclosure — the interlock and illumination kit add depth behind the door.