The Siemens 3VA9677-0FK27 is a door mounted rotary operator for EMERGENCY OFF (IEC IP65) with an integrated door interlock and a 24 V DC lighting kit. It is designed as an accessory for the 3VA55 and 3VA65/66 molded case circuit breaker families. This is a panel-mounted component: the operator mounts through the enclosure door, with the interlock preventing door opening while the breaker is ON. The IP65 rating means the operator face and seal withstand washdown environments — suitable for food, beverage, or outdoor enclosures where hose-down cleaning is routine. Packaged as a single piece (352 x 192 x 122 mm), it ships as a complete kit ready for panel integration.
Integration Notes
Door cutout dimensions follow the standard Siemens 3VA rotary operator footprint — align the mounting template before drilling the enclosure. The 24 V DC lighting kit requires a separate power feed; verify polarity on the LED circuit before connecting to the control transformer. The door interlock mechanism engages with the breaker rotary handle. On 3VA55 and 3VA65/66 frames, the interlock prevents door opening unless the breaker is in the OFF position — a safety requirement for installations where arc flash or live parts are behind the door. Product class B (return restricted) means this is a controlled item: contact your Siemens partner or our desk for return/RMA terms before ordering.