Omron D4N-9120 Limit Switch
Omron D4N-9120 is a snap-action limit switch with a resin lever, resin roller, and 1NC/1NO contact arrangement. An M12 connector provides the electrical interface, while the actuator supports operating speeds from 1 to 500 mm/s. IP67 protection, 25 mΩ maximum contact resistance, 100 MΩ minimum insulation resistance, and a 300 V rated insulation voltage are specified. The D4N-9120 belongs to the D4N Series within the roller lever limit switch range from Omron limit switch products. Its resin actuator and M12 connector are the main configuration points.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-9120 |
Omron D4N-9120 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Contact Form | 1NC/1NO |
| Shock Resistance | Destruction 1,000 m/s2 min. Malfunction 300 m/s2 min. |
| Degree Of Protection | IP67 |
| Insulation Resistance | 100 MΩ min. |
| Actuator | Roller lever (resin lever, resin roller) |
| Vibration Resistance | Malfunction 10 to 55 Hz, 0.75 mm single amplitude |
| Operating Mechanism | Snap-action |
| Conduit Size Conduit Openings | 1-conduit,M12 connector |
| Operating Speed | 1 to 500 mm/s |
| Operating Frequency | 30 operations/minute max. |
| Contact Resistance | 25 mΩ max. |
| Rated Insulation Voltage Ui | 300 V |
| Rated Frequency | 50/60 Hz |
| Ambient Operating Temperature | −30 to 70°C (with no icing) |
| Ambient Operating Humidity | 95% max |
| Weight | Approx. 82 g (D4N-1120) Approx. 99 g (D4N-6120) |
The Omron D4N-9120 Limit Switch uses a resin lever and resin roller with 1NC/1NO snap-action switching. Unlike conduit-entry D4N variants, this model uses an M12 connector for electrical connection. The actuator works with movement speeds from 1 to 500 mm/s and supports a maximum operating frequency of 30 operations per minute. Contact resistance is specified at 25 mΩ maximum, while insulation resistance is 100 MΩ minimum. Rated insulation voltage is 300 V at 50/60 Hz. IP67 protection is listed together with an operating temperature range from -30 to 70°C and relative humidity up to 95%.
Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude. Destructive shock resistance is specified at least at 1,000 m/s² and malfunction shock resistance at least at 300 m/s². The important model identifiers are therefore resin roller-lever construction, 1NC/1NO snap action, and M12 connector termination. The closest comparison is another M12-connected D4N model using the same contact arrangement but a different actuator material. For an all-metal lever and roller configuration, see the D4N-9125 model.
