173-6732, Siemens, Siemens SIRIUS ACT 3SU10 3-position Key Switch Head, Latching, 22mm Cutout, Brand Siemens, Series SIRIUS ACT 3SU10, Cutout Diameter 22mm, Number of Positions 3 Siemens SIRIUS ACT 3SU10 3-position Key Switch Head, Latching, 22mm Cutout