Description:1NO 1NC (DPST) contact type, red round head, Latching action, 22mm panel cutout diameter.Push to stop and lock, twist to reset.For emergency stop in industry with the conspicuous red mushroom cap.Used widely to control the electromagnetic starter, contactor, relay and other automatic control electric circuits.Specification:Rated Voltage: AC250VAction Type: Latching (Self-Locking)Contacts Type: 1NO 1NCTerminals Quantity: 4Panel Mounting Diameter: 22mm / 0.78"Overall Size: 77*40*30mm(L*W*H)Ui: 440V; Ith: 10APackage Content: 1 x Push button Switch .