SICK ES21 Series Emergency Stop Push Button, 2NC, IP65

ES11 emergency stop pushbuttons are essential in automated machines and plants. They make it possible for someone to stop a machine or a system immediately in case of an emergency. Depending on the variant, the emergency stop pushbuttons are also equipped with reset pushbuttons.

Reset pushbuttons are used to manually reset the protective device and thus restore the machine to a safe state for restart.

Slim plastic housing with quick disconnect mounting clip
Available as an emergency stop pushbutton or as a combined emergency stop/reset unit
Emergency stop pushbutton with optional LED illumination
Illuminated reset pushbutton
Flexi Loop-compatible M12 plug connector

Easy mounting with snap-in connection
Quick commissioning and rapid replacement thanks to M12 plug connector
User friendly status display
With Flexi Loop: safe series connection including diagnostics with easier wiring

Fields of applications
Safe stop function for machinery and systems
For machines where people are present in the hazardous area without triggering the protective device (for variants with reset pushbutton)
Prevention of unexpected machine start (for varia