Omron D4N-4B32 Limit Switch
Omron D4N-4B32 combines a roller plunger with two normally closed contacts and a slow-action mechanism. This M20 single-conduit version works over an actuator-speed range of 1 to 500 mm/s and supports up to 30 operations per minute. IP67 protection, 100 MΩ minimum insulation resistance, 25 mΩ maximum contact resistance, and 300 V rated insulation voltage are specified. The D4N-4B32 belongs to the D4N Series within the 2NC roller plunger switch range from Omron limit switch products. Its 2NC contact form differentiates it from the 1NC/1NO and 2NC/1NO M20 plunger versions.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-4B32 |
Omron D4N-4B32 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 | Roller plunger |
| Vibration Resistance | Malfunction 10 to 55 Hz, 0.75 mm single amplitude |
| Operating Mechanism | Slow-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-4B32 Limit Switch uses a roller plunger together with 2NC slow-action contacts and an M20 single-conduit entry. This configuration provides two normally closed switching paths while retaining the direct rolling actuator used by the other D4N-4x32 variants. The allowable actuator speed ranges from 1 to 500 mm/s, and operating frequency is specified at 30 operations per minute maximum. IP67 protection, 100 MΩ minimum insulation resistance, 25 mΩ maximum contact resistance, and 300 V rated insulation voltage at 50/60 Hz are listed.
The D4N-4B32 operates 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, while shock ratings are at least 1,000 m/s² for destruction and 300 m/s² for malfunction. Because actuator, conduit and mechanism are shared with neighboring models, its 2NC contact form becomes the primary selection difference. For a roller-plunger M20 model that adds a normally open contact to provide 2NC/1NO switching, see the D4N-4C32 model.
