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Emergency Stop Switch (22-dia./25-dia.)
Install in 22-dia. or 25-dia. Panel Cutout
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Quick links to 'A22E' page in your country / territory.
Please contact our European headquarters.
Get more support via Products links, such as manuals and CAD files.
List of Models (Completely Assembled)
Non-lighted Models
| Operating | Set Model | Color of cap | ||
| Appearance | Contact Configuration | |||
| 40-dia. head Medium Push-pull A22E-MP | ![]() | SPST-NC | A22E-MP-01 | Red |
| SPST-NO/SPST-NC | A22E-MP-11 | |||
| DPST-NC | A22E-MP-02 | |||
| 60-dia. head Large Push-pull A22E-LP | ![]() | SPST-NC | A22E-LP-01 | |
| SPST-NO/SPST-NC | A22E-LP-11 | |||
| DPST-NC | A22E-LP-02 | |||
| 30-dia. head Small Push-lock Turn-reset A22E-S | ![]() | SPST-NC | A22E-S-01 * | |
| SPST-NO/SPST-NC | A22E-S-11 * | |||
| DPST-NC | A22E-S-02 * | |||
| DPST-NC + SPST-NO | A22E-S12 * | |||
| TPST-NC | A22E-S-03 * | |||
| 40-dia. head Medium Push-lock Turn-reset A22E-M | ![]() | SPST-NC | A22E-M-01 * | |
| SPST-NO/SPST-NC | A22E-M-11 * | |||
| DPST-NC | A22E-M-02 * | |||
| DPST-NC + SPST-NO | A22E-M-12 * | |||
| TPST-NC | A22E-M-03 * | |||
| 60-dia. head Large Push-lock Turn-reset A22E-L | ![]() | SPST-NC | A22E-L-01 * | |
| SPST-NO/SPST-NC | A22E-L-11 * | |||
| DPST-NC | A22E-L-02 * | |||
| 30-dia. head Small Push-lock Key-reset A22E-SK | ![]() | SPST-NC | A22E-SK-01 | |
| SPST-NO/SPST-NC | A22E-SK-11 | |||
| DPST-NC | A22E-SK-02 | |||
| 40-dia. head Medium Push-lock Key-reset A22E-MK | ![]() | SPST-NC | A22E-MK-01 | |
| SPST-NO/SPST-NC | A22E-MK-11 | |||
| DPST-NC | A22E-MK-02 | |||
*Models with Korean S-mark certification.
Note:
1.Yellow cap models are also available (not for emergency stop use). Contact your OMRON representative.
2.The Operation Unit of A22E exept models with EMO/EMS indication is red. (The engraved mark is not white.)
With EMO/EMS Indication (non-lighted)
| Operating | Set Model | Color of cap | ||
| Appearance | Contact Configuration | |||
| 40-dia. head Medium Push-lock Turn-reset With EMO Indication | ![]() | SPST-NC | A22E-M-01-EMO * | Red |
| SPST-NO/SPST-NC | A22E-M-11-EMO * | |||
| DPST-NC | A22E-M-02-EMO * | |||
| DPST-NC + SPST-NO | A22E-M-12-EMO * | |||
| TPST-NC | A22E-M-03-EMO * | |||
| 40-dia. head Medium Push-lock Turn-reset With EMS Indication | ![]() | SPST-NC | A22E-M-01-EMS * | |
| SPST-NO/SPST-NC | A22E-M-11-EMS * | |||
| DPST-NC | A22E-M-02-EMS * | |||
| DPST-NC + SPST-NO | A22E-M-12-EMS * | |||
| TPST-NC | A22E-M-03-EMS * | |||
*Models with Korean S-mark certification.
Lighted Models
| Appearance | Operating | Push-lock turn-reset system | Color of cap | ||
| Contact configuration | Lighting | Rated voltage | Set Model | ||
| 40-dia. head Push-lock Turn-reset without Voltage Reduction Unit A22E ![]() | SPST-NC | LED | 6 VAC/VDC | A22EL-M-6A-01 * | Red |
| 12 VAC/VDC | A22EL-M-12A-01 * | ||||
| 24 VAC/VDC | A22EL-M-24A-01 * | ||||
| SPST-NO/SPST-NC | 6 VAC/VDC | A22EL-M-6A-11 * | |||
| 12 VAC/VDC | A22EL-M-12A-11 * | ||||
| 24 VAC/VDC | A22EL-M-24A-11 * | ||||
| DPST-NC | 6 VAC/VDC | A22EL-M-6A-02 * | |||
| 12 VAC/VDC | A22EL-M-12A-02 * | ||||
| 24 VAC/VDC | A22EL-M-24A-02 * | ||||
| 40-dia. head Push-lock Turn-reset with Voltage Reduction Unit A22E ![]() | SPST-NC | 100 VAC | A22EL-M-T1-01 | ||
| 200 VAC | A22EL-M-T2-01 | ||||
| SPST-NO/SPST-NC | 100 VAC | A22EL-M-T1-11 | |||
| 200 VAC | A22EL-M-T2-11 | ||||
| DPST-NC | 100 VAC | A22EL-M-T1-02 | |||
| 200 VAC | A22EL-M-T2-02 | ||||
*Models with Korean S-mark certification.
Note:The Operation Unit of A22E exept models with EMO/EMS indication is red. (The engraved mark is not white.)
Switch with Integrated Control Box
| Appearance | Contact configuration | Model |
![]() | SPST-NC | A22E-M-01B * |
| SPST-NO/SPST-NC | A22E-M-11B * | |
| DPST-NC | A22E-M-02B * |
*Models with Korean S-mark certification.
Subassembled
The Operation Unit, Lamp, or Switch can be ordered separately. Use them in combination for models that are not available as assembled Units.
These can also be used as inventory for maintenance parts.
*1.The Operation Unit of A22E exept models with EMO/EMS indication is red. (The engraved mark is not white.)
*2.Up to three Switch Units can be mounted for multiple contacts.
Operation Units
Non-lighted
| Sealing capability Size | IP65 oil-resistant models | ||
| Small (30 dia.) | Medium (40 dia.) | Large (60 dia.) | |
| Push-pull | --- | A22E-MP ![]() | A22E-LP ![]() |
| Push-lock, turn-reset | A22E-S ![]() | A22E-M ![]() | A22E-L ![]() |
| Push-lock, key-reset (push-lock, turn-reset) | A22E-SK ![]() | A22E-MK ![]() | --- |
Lighted
| Sealing capability Size | IP65 |
| Medium (40 dia.) | |
| Push-lock, turn-reset | A22EL-M ![]() |
Note:The Operation Unit of A22E exept models with EMO/EMS indication is red. (The engraved mark is not white.)
Lamp
LED
| Appearance | LED light | Rated voltage | Model | |
![]() | Red | Standard | 6 VAC/VDC | A22-6AR |
| 12 VAC/VDC | A22-12AR | |||
| 24 VAC/VDC | A22-24AR | |||
Note:For voltage-reduction lighting, use the A22-24AR.
Incandescent
| Appearance | Rated voltage | Model |
![]() | 6 VDC | A22-5 |
| 14 VAC | A22-12 | |
| 28 VAC | A22-24 | |
| 130 VAC | A22-H1 |
Switch (Standard Load)
Without Voltage Reduction Unit
| Classification Appearance | Non-lighted ![]() | Lighted ![]() | |
| Switch Action | Momentary | Momentary | |
| Contacts | Model | Model | |
| For standard loads | SPST-NC | A22-01M | A22L-01M |
| SPST-NO + SPST-NC | A22-11M | A22L-11M | |
| DPST-NC | A22-02M | A22L-02M | |
With Voltage Reduction Unit
| Classification Appearance | Lighted (110 VAC) ![]() | Lighted (220 VAC) ![]() | |
| Switch Action | Momentary | Momentary | |
| Contacts | Model | Model | |
| For standard loads | SPST-NC | A22L-01M-T1 | A22L-01M-T2 |
| SPST-NO + SPST-NC | A22L-11M-T1 | A22L-11M-T2 | |
| DPST-NC | A22L-02M-T1 | A22L-02M-T2 | |
Note:When using with a Voltage Reduction Unit, use the A22-24AR.
Accessories (Order Separately)
| Item | Appearance | Classification | Model | Remarks | |
| Switch Blocks | ![]() | SPST-NO | Standard load | A22-10 | Provided as standard. Order Switch Blocks only when adding or replacing them. |
| Microload | A22-10S | ||||
| SPST-NC | Standard load | A22-01 | |||
| Microload | A22-01S | ||||
![]() | DPST-NO, one-piece | Standard load | A22-20 | ||
| Microload | A22-20S | ||||
| DPST-NC, one-piece | Standard load | A22-02 | |||
| Microload | A22-02S | ||||
| Lamp Sockets | ![]() | Direct lighting | A22-TN | Used when changing the lighting method. | |
| Voltage- reduction lighting | 100 VAC | A22-T1 | |||
| 200 VAC | A22-T2 | ||||
| Mounting Latches | ![]() | --- | A22-3200 | Provided as standard. Order Mounting Latches only when mounting Switch Blocks or Lamp Sockets that are purchased individually. | |
| Legend Plates for Emergency Stop | ![]() | 60-dia. black letters on yellow back-ground | A22Z-3466-1 | "EMERGENCY STOP" is indicated on the plate. | |
| 90-dia. black letters on yellow back-ground | A22Z-3476-1 | ||||
![]() | 60-dia. black letters on yellow back-ground | A22Z-3466-2 | "EMERGENCY OFF" is indicated on the plate. | ||
| Hole Plug | ![]() | Round | A22Z-3530 | Can be plugged into pre-cut panel holes for future expansion. The color is black. | |
| Connectors | ![]() | Applicable cable diameter | 7 to 9 dia. | A22Z-3500-1 | Plastic connector used to extend a cable from the Switch Box. |
| 9 to 11 dia. | A22Z-3500-2 | ||||
| 25-dia. Ring | ![]() | --- | A22Z-R25 | Can be fit into a 25-dia. hole in the panel. Since this is not attached to the main body, order separately. (Refer to Data Sheet.) | |
| 30-dia. Resin Attachment | ![]() | --- | A22Z-A30 | Can be fit into a 30-dia. hole in the panel. (Refer to Data Sheet.) | |
| Lock Plate | ![]() | --- | A22Z-3380 | Use to fix the lever on the Switch. | |
| Control Boxes (Enclosures) | ![]() | One hole, yellow box (for emergency stop) | A22Z-B101Y | Material: Polycarbonate resin | |
| Operation Keys | ![]() | --- | A22K-K | Two keys are provided. | |
| Lock Ring | ![]() | Rounded shape | A22Z-3360 | The body is equipped with a Lock Fitting. This Lock Fitting is used when a more secure lock feature is required. (Refer to Data Sheet.) | |
| Lamp Extractor | ![]() | --- | A22Z-3901 | Rubber tool used to replace Lamps easily | |
| Tightening Tool | ![]() | --- | A22Z-3905 | Tool used to tighten rings from the back of the panel and to attach caps to lighted models. | |
| E-stop Shroud for EMO, Yellow | ![]() | --- | A22Z-EG1 | Provides SEMI-S2/SEMATECH Application Guide for SEMI-S2 compatibility. The SEMI-S2-compatible Shroud and legend plate for EMERGENCY OFF come as a set. Use with an A22E Emergency Stop Switch. (for emergency shutoff) * | |
| E-stop Shroud for EMO, Yellow | ![]() | Legend plate for EMERGENCY OFF is not included. | A22Z-EG10 | Provides SEMI-S2/SEMATECH APPLICATION GUIDE FOR SEMI S2 compatibility. Use with an A22E with EMO indication. (for emergency off) | |
| E-stop Shroud for EMS, White | ![]() | --- | A22Z-EG1-W | Provides SEMI-S2/SEMATECH Application Guide for SEMI-S2 compatibility. The SEMI-S2-compatible Shroud and legend plate for EMERGENCY STOP come as a set. Use with an A22E Emergency Stop Switch. (for emergency stop) * | |
| E-stop Shroud for EMS, White | ![]() | Legend plate for EMERGENCY STOP is not included. | A22Z-EG10-W | Provides SEMI-S2/SEMATECH APPLICATION GUIDE FOR SEMI S2 compatibility. Use with an A22E with EMS indication. (for emergency stop) | |
| E-stop Shroud, Yellow | ![]() | --- | A22Z-EG2 | SEMI-S2/SEMATECH Application Guide for SEMI S2-compatible Shroud. (for emergency shutoff) * Use together with an A22E Emergency Stop Switch. | |
*These Shrouds are for use with the equipment only that conforms to SEMI standards. Do not use them for any other applications (e.g. emergency stop switches for machines or devices such as Machine tools, Printing presses, Industrial machinery, etc).