The Schneider Electric Square D 9001KS73 Harmony selector switch head is a metal, 30 mm diameter operator with 3 positions and spring-return-to-center action, supplied without a handle. It is a member of the Harmony 9001K family, intended as the head portion of a 30 mm selector switch assembly. This head is used in electrical control panels to provide manual mode or function selection through a three-position, spring-loaded mechanism.
