Omron D4N-4180 Limit Switch
Omron D4N-4180 is a snap-action limit switch with a cat-whisker actuator and 1NC/1NO contacts. The flexible actuator provides a different mechanical contact format from roller plungers and roller levers, while an M20 single-conduit entry supports wiring. Operating speed is specified from 1 to 500 mm/s, and maximum switching frequency is 30 operations per minute. IP67 protection, 100 MΩ minimum insulation resistance, and 25 mΩ maximum contact resistance are listed. The D4N-4180 belongs to the D4N Series within the cat-whisker limit switch range from Omron limit switch products.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-4180 |
Omron D4N-4180 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 | Cat whisker |
| Vibration Resistance | Malfunction 10 to 55 Hz, 0.75 mm single amplitude |
| Operating Mechanism | Snap-action |
| Conduit Size Conduit Openings | 1-conduit,M20 |
| 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-4180 Limit Switch is mechanically defined by its cat-whisker actuator, which differs from the roller-plunger and roller-lever arrangements used across much of the D4N family. The switch uses 1NC/1NO contacts with snap-action operation and an M20 single-conduit entry. Operating speed is specified from 1 to 500 mm/s, while maximum frequency is 30 operations per minute. 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 specified.
The operating temperature range extends from -30 to 70°C with relative humidity up to 95%. Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude. The switch withstands destructive shock of at least 1,000 m/s² and malfunction shock of at least 300 m/s². Because the electrical and enclosure values are shared by several D4N models, the cat-whisker actuator is the primary reason to identify this particular version. For another M20 snap-action 1NC/1NO model using an adjustable metal lever and rubber roller instead, see the D4N-412H model.
