Editing Kill switch (section)

==Industrial machinery==
[[File:Emergency stop button.jpg|thumb|The arrows indicate that the stop button must be turned to [[Reset button|reset]] the switch before the equipment can be restarted.|alt=]]
On large industrial machines, an emergency stop button is typically located on the panel, and possibly in several other areas of the machine. Often, an emergency stop is made wireless using a remote control. This provides a rapid means to disconnect the energy source of the device to protect workers.<ref>{{cite web
   |author=Repas, Robert |date=June 22, 2010
   |url=http://machinedesign.com/article/designing-with-e-stop-switches-0622
   |title=Designing with E-stop Switches
   |archive-url=https://web.archive.org/web/20130417042555/http://machinedesign.com/article/designing-with-e-stop-switches-0622
   |archive-date=2013-04-17
   |website=machinedesign.com}}</ref> For [[fail-safe]] operation, the emergency stop button is a normally closed switch, which ensures that a broken wire will not prevent it from being activated, but may accidentally activate the emergency stop.

In the [[European Union]], most types of machinery are required to be equipped with an emergency stop according to the [[Machinery Directive|Directive 2006/42/EC]]. Exceptions apply for machinery in which an emergency stop would not lessen the risk as well as for portable hand-held/hand-guided machinery.

===Nuclear power plants===
{{main|Scram}}
A kill switch in a nuclear reactor plant is called [[Scram|SCRAM]]. It is usually characterized as an acronym for "safety control rod axe man", though this is probably a [[backronym]].