The SSA-EBM-12E is an Emergency Stop Button Switch with metal button base, 2 NC and 1 NO contacts. The SSA-EB series are metal or mushroom-style mechanical emergency stop buttons, available with a compact enclosure housing, to provide emergency stop actuation. When the button is armed, the switch's NC contacts are closed and its NO contacts, if present, are open. When the button is pushed, the switch's NC contacts open and its NO contacts close. The contacts remain in this condition until the push button is manually rearmed. To manually rearm, twist the push button. Serves as a relay for primary safety devices with OSSD solid-state or hard contact outputs and external device monitoring, such as the EZ-SCREEN.