Omron D4N-2131 Limit Switch
Omron D4N-2131 is a snap-action limit switch with a plunger actuator and 1NC/1NO contact form. The conduit specification is 1-conduit, G1/2, and operating speed is listed from 1 to 500 mm/s. Operation frequency is 30 operations/minute maximum, while IP67 protection and 25 mΩ maximum contact resistance are specified. Rated insulation voltage is 300 V at 50/60 Hz. The D4N-2131 belongs to the D4N Series within the plunger limit switch range from Omron. Its plunger actuator, 1NC/1NO contacts, snap-action mechanism, and G1/2 conduit configuration are the main selection details, distinguishing it from the M20 plunger version in the same D4N family.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-2131 |
Omron D4N-2131 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 | Plunger |
| Vibration Resistance | Malfunction 10 to 55 Hz, 0.75 mm single amplitude |
| Operating Mechanism | Snap-action |
| Conduit Size Conduit Openings | 1-conduit,G1/2 |
| 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-2131 Limit Switch uses a plunger actuator with 1NC/1NO contacts and a snap-action mechanism. Its conduit specification is 1-conduit, G1/2. Operating speed ranges from 1 to 500 mm/s, and operation frequency is specified at 30 operations/minute maximum. Contact resistance is 25 mΩ maximum, insulation resistance is 100 MΩ minimum, and rated insulation voltage is 300 V at 50/60 Hz. IP67 protection is listed for the model. Operating temperature extends from -30 to 70°C with no icing, while humidity is specified at 95% maximum.
Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude. Destructive shock resistance is 1,000 m/s² minimum and malfunction shock resistance is 300 m/s² minimum. For model matching, D4N-2131 is best identified by the plunger actuator, 1NC/1NO contact form, snap-action mechanism, and G1/2 conduit specification. The remaining electrical and environmental values support that core identity without adding unlisted usage claims. Within the current D4N group, the G1/2 conduit is especially useful for separating this snap-action plunger version from otherwise similar M20 configurations with the same contact form. Another current D4N model uses the same plunger actuator, 1NC/1NO contacts, and snap-action mechanism while changing the conduit specification from G1/2 to M20. For that related configuration, see D4N-4131.
