Emergency stop button symbol
Also called E-stop, Emergency stop, Mushroom head push button
A latching normally closed push button with a large mushroom head. Pressing it opens the circuit and it stays open until it is reset by turning or pulling.
ANSI / IEEE
IEC 60617What the emergency stop button symbol means
A latching normally closed push button with a large mushroom head. Pressing it opens the circuit and it stays open until it is reset by turning or pulling.
ANSI and IEC symbols
Where you see it
Emergency stop circuits on machines, panels and process equipment, usually wired to a safety relay.
Related symbols
Frequently asked questions
What does the emergency stop button symbol look like?
On ANSI drawings: An NC push button with a mushroom-shaped head. In IEC 60617: A break contact operated by a mushroom-head push button.
Is the emergency stop button symbol the same in IEC and ANSI?
No. A break contact operated by a mushroom-head push button.
Where is a emergency stop button used?
Emergency stop circuits on machines, panels and process equipment, usually wired to a safety relay.
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