Normal-Hilfsschalter, Can be fitted to the front, Terminal designation differs to that of an auxiliary contact that can be fitted to the side, S = Schließer: 1 S, Ö = Öffner: 1 Ö, Push-in-Klemmen, verwendbar für: PKZM01, PKZM0, PKZM4, PKZM0-T, PKM0, PKE