3SU1051-1BA20-0AA0-Z Y12 SIEMENS ⍾ 3SU10511BA200AA0ZY12

EMERGENCY STOP mushroom pushbutton, illuminable, 22 mm, round, metal, shiny, red, 40 mm, positive latching, acc. to EN ISO 13850, rotate-to-unlatch

Illuminated pushbutton, 22 mm, round, metal, shiny, white, pushbutton, flat, momentary contact type

Illuminated pushbutton, 22 mm, round, metal, shiny, blue, pushbutton, flat, momentary contact type