Rated Current: 6A,10A,16A Contact Form:SPDT;SPST-NC;SPST-NO Sensitive Long life,high reliability Variety of Levers ... :2N300:3N400:4N 3.Connect Forms1A:SPDT2A:SPST-NO3A:SPST-NC 7Plunger specsNo mark:Standard PlungerA: Middle PlungerB: Long PlungerC: Abnormality ... .If there is no Additional numbers,the place is vacant 16A sealed micro switch