Omron D4N-2B31 Limit Switch
Omron D4N-2B31 is a slow-action limit switch with a plunger actuator and 2NC contact form. It uses a 1-conduit, G1/2 configuration and operates from 1 to 500 mm/s. Operation frequency is 30 operations/minute maximum, while IP67 protection, 25 mΩ maximum contact resistance, and 300 V rated insulation voltage are specified. The D4N-2B31 2NC Plunger Switch belongs to the D4N Series within the Omron Plunger Switch Series from Omron Industrial Control Components. Insulation resistance is 100 MΩ minimum and frequency is 50/60 Hz. Its plunger, 2NC contacts, slow action, and G1/2 conduit define the configuration.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-2B31 |
Omron D4N-2B31 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Contact Form | 2NC |
| 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 | Slow-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-2B31 Limit Switch uses a plunger actuator with a 2NC contact form and slow-action mechanism. The connection is specified as 1-conduit, G1/2. Operating speed ranges from 1 to 500 mm/s, while operation frequency is 30 operations per 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. The operating temperature range is -30 to 70°C with no icing, and humidity is 95% maximum. These values provide the core electrical, connection, and environmental profile for the D4N-2B31 configuration.
Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude. Destructive shock resistance is 1,000 m/s² minimum, while malfunction shock resistance is 300 m/s² minimum. The strongest exact-model terms are D4N Series, plunger actuator, 2NC contacts, slow-action mechanism, G1/2 conduit, 1 to 500 mm/s operating speed, 25 mΩ contact resistance, 300 V rated insulation voltage, and IP67 protection. The source does not provide a separate normal load rating, contact-gap value, plunger dimensions, or durability figure, so those specifications are not imported from other D4N products. The combination of 2NC contacts and G1/2 conduit is especially useful for model identification within the current D4N data. For another 2NC slow-action D4N model, see D4N-1B22.
