Pushbuttons & E-Stops
(a.k.a. emergency stop, push button, pusbbutton switch, kill switch, EPO, emergency power off, selector switch)
The basics: pushbuttons are used to control a machine or process. A normally open pushbutton allows electricity to flow when it is pushed; when released the circuit is broken. Normally closed buttons have electrical contact in their default state; when pushed it will no longer make electrical contact. E-stops are a safety button used to shut off machinery in an emergency.
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