Safety command devices

Emergency stop pushbutton for fast and reliable stopping of the machine

Your Benefits

  • Increased safety due to self-monitoring contacts
  • Reduction in accidental faults due to variants with a protective collar
  • User-friendly status indicator identified by a colored mark or LED ring around the pushbutton simplifies diagnostics
  • Successful down to the last detail: award-winning and appealing design


Emergency stop pushbutton for fast and reliable stopping of the machine

ES21 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 either integrated into a machine control panel, or mounted with their housings directly on the machines.

At a glance
  • Available either as a surface-mounted version with housing or as a built-in version (Ø 22 mm)
  • Built-in version for machine control panels with self-monitoring contacts between pushbutton and switching element
  • Surface-mounted version for direct mounting on different machines and systems
  • Variants with LED ring lighting
  • Optionally available with protective collar to prevent inadvertent actuation


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)

    Emergency stop pushbutton (illuminable)– / ✔
    Connection typeCable gland, 2 x M20
All technical data can be found accompanying the individual product