Siemens 3VA9277-0FK31 Emergency Stop Switch Assembly

Siemens 3VA9277-0FK31 Emergency Stop Switch Assembly is a door-mounted rotary operator for emergency-stop switches in the Siemens 3VA family. Designed to be mounted on the enclosure door, it enables actuation of the E-stop from the door face and is specified for standard NEMA enclosures types 1, 3R, and 12, with an option for 4/4X door-mounted configurations. The 0FK31 variant provides both a door interlock and a door-open function, allowing the operator to remain accessible while maintaining enclosure integrity. This assembly is used in industrial control panels where an emergency-stop control must be reachable at the door and integrated with the panel's safety circuit. As part of Siemens' emergency-off lineup, it pairs with compatible enclosing and switch components to deliver a door-mounted E-stop solution in applications such as machine safety enclosures, packaging lines, and automated equipment. The part number clearly identifies the model, facilitating ordering and cross-referencing with Siemens catalogs and UL/IEC documentation for enclosures that require door-mounted emergency-stop actuation.