Omron D4N-1C20 Limit Switch
Omron D4N-1C20 uses a resin roller lever with a resin roller and a 2NC/1NO contact arrangement, providing three contact paths from a slow-action mechanism. The single-conduit switch operates with actuator speeds from 1 to 500 mm/s and supports up to 30 operations per minute. IP67 protection and 25 mΩ maximum contact resistance are specified. The D4N-1C20 belongs to the D4N Series within the 2NC/1NO roller lever switch range from Omron switching products. Its three-contact arrangement is the key electrical distinction.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-1C20 |
Omron D4N-1C20 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Contact Form | 2NC/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 | Slow-action |
| Conduit Size Conduit Openings | 1-conduit |
| 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-1C20 Limit Switch uses a resin lever and resin roller with a slow-action 2NC/1NO contact arrangement. Three contact paths are provided from one lever actuator, making the contact configuration the most useful electrical identifier for this model. The single-conduit switch operates at target speeds from 1 to 500 mm/s and is specified for up to 30 operations per minute. Contact resistance is 25 mΩ maximum, insulation resistance is 100 MΩ minimum, and IP67 protection is listed. Rated insulation voltage is 300 V at 50/60 Hz.
Operating temperature extends from -30 to 70°C with humidity up to 95%. Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude, with shock resistance of at least 1,000 m/s² for destruction and 300 m/s² for malfunction. The combination of resin actuator construction and 2NC/1NO slow-action contacts differentiates this model from 2NC snap-action roller levers. For a D4N roller lever using 2NC snap-action switching, see the D4N-2220 model.
