Siemens SIRIUS ACT 3SU11000AB101FA0 black pushbutton is distinguished by its flush and ergonomic design with plastic collar. The device has drilling dimensions of 22mm and is a complete device with plastic holder and 1NO+!NC contact included. Siemens SIRIUS ACT 3SU11000AB101FA0 pushbutton is NEMA 1, 2, 3, 3R, 4, 4X, 12, 13 rated, as well as IP66/67/69K.