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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.
| Switch type | Emergency stop pushbutton |
| Number of positive action N/C contacts | 1 / 2 |
| Number of N/O contacts | 0 / 1 |
| Housing material | Plastic |
| Enclosure rating | IP65 (IEC 60529) IP54 (IEC 60529) |
| Emergency stop pushbutton (illuminable) | – / ✔ |
| Connection type | Cable gland, 2 x M20 |
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