Safety command devices

Emergency stop pushbutton for fast and reliable stopping of the machine

Your Benefits

  • A wide range of variants for custom-fit integration into your machine
  • High level of safety thanks to self-monitoring: It switches off the machine in the event of faulty installation or mechanical damage
  • Quick and user-friendly reading of the device status
  • Reduction of unplanned machine stops, for instance in busy work areas
  • Can be installed quickly and cost-effectively, at the same time reducing sources of error during wiring
  • Simple, safe series connection with Flexi Loop


Emergency stop pushbutton for fast and reliable stopping of the machine

ES21 emergency stop pushbuttons are a must for automated machines and systems. They provide a means for a person to stop a machine or system in the event of an emergency. Depending on the variant, the emergency stop pushbuttons are either integrated into a machine operator panel or mounted directly on the machine.

At a glance
  • Optionally available as a built-in version or as a surface-mounted version with housing
  • Built-in version with self-monitoring emergency stop contacts
  • Status display with colored mark or LED ring illumination
  • Variants with protective collar
  • Variants with M12 male connector


Technical overview

  • Technical data overview

    Technical data overview

    Switch typeEmergency stop pushbutton
    Number of positive action N/C contacts1 / 2 / 3
    Number of N/O contacts0 / 1
    Housing materialPlastic
    Enclosure rating

    IP65 (IEC 60529)

    IP54 (IEC 60529)

    IP65, IP67 (IEC 60529)

    Emergency stop pushbutton (illuminable)– / ✔
    Connection type

    Cable gland, 2 x M20

    Terminal strip

    Connector M12, 5-pin, A-coded

    Cable with male connector M12, 4-pin, A-coded

    M12 male connector, 4-pin, A-coding

    Suitable for muting applications (with UE403)
    Suitable for reset/override applications (with deTec4)
All technical data can be found accompanying the individual product