safetyshutoff

noun
UK /ˈseɪfti ˈʃʌtɒf/
US /ˈseɪfti ˈʃʌtɔf/

A safety shutoff is a switch that stops a machine when something goes wrong.

The safety shutoff turned off the heater when it got too hot.


OTHER MEANINGS

2. A device that automatically cuts off the flow of gas or water.

The safety shutoff closed the gas line during the earthquake.

3. A feature that turns off power to prevent damage or injury.

Press the safety shutoff before you open the machine's cover.

4. The act of stopping a system safely in an emergency.

The reactor's safety shutoff happened within seconds.