Omron D4N-412H Limit Switch
Omron D4N-412H features an adjustable form-lock roller lever made with a metal lever and rubber roller. The adjustable actuator is paired with 1NC/1NO snap-action contacts and an M20 single-conduit entry. Operating speed extends from 1 to 500 mm/s, with switching frequency up to 30 operations per minute. IP67 protection and 25 mΩ maximum contact resistance are specified. The D4N-412H sits within the D4N Series and the adjustable roller lever switch range from Omron switching components. Its form-lock adjustment and rubber roller are the main actuator features for model selection.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-412H |
Omron D4N-412H 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 | Adjustable roller lever, form lock (metal lever, rubber roller) |
| 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-412H Limit Switch uses an adjustable form-lock roller lever consisting of a metal lever and rubber roller. This actuator arrangement allows the lever position to be adjusted while retaining a defined form-lock configuration. The switch uses 1NC/1NO contacts with snap-action operation and an M20 single-conduit connection. Actuator speed ranges from 1 to 500 mm/s, with maximum switching frequency of 30 operations per minute. IP67 protection, 25 mΩ maximum contact resistance, 100 MΩ minimum insulation resistance, and a 300 V rated insulation voltage at 50/60 Hz are specified.
The model operates from -30 to 70°C with relative humidity up to 95%. Its malfunction vibration rating covers 10 to 55 Hz at 0.75 mm single amplitude, while destructive and malfunction shock resistance are at least 1,000 and 300 m/s² respectively. The adjustable lever and rubber roller are the most important mechanical characteristics because other D4N snap-action versions use fixed levers or flexible actuators. For a related M20 model using the same 1NC/1NO snap-action contact configuration but a cat-whisker actuator, see the D4N-4180 model.
