Omron D4N-4A32 Limit Switch
Omron D4N-4A32 is an M20-conduit roller plunger limit switch using 1NC/1NO slow-action contacts. The rolling actuator supports direct mechanical position detection at operating speeds from 1 to 500 mm/s, while maximum switching frequency is 30 operations per minute. IP67 protection, 25 mΩ maximum contact resistance, 100 MΩ minimum insulation resistance, and a 300 V rated insulation voltage are specified. The D4N-4A32 forms part of the D4N Series within the 1NC/1NO roller plunger switch range from Omron switching products. Contact form and M20 conduit distinguish this configuration.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-4A32 |
Omron D4N-4A32 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 | 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-4A32 Limit Switch combines a roller plunger actuator with 1NC/1NO slow-action switching and an M20 single-conduit connection. The mechanical actuator accepts movement from 1 to 500 mm/s, while the specified maximum switching frequency is 30 operations per minute. Contact resistance is limited to 25 mΩ maximum and insulation resistance is 100 MΩ minimum. Rated insulation voltage is 300 V at 50/60 Hz. IP67 protection is specified, together with an operating range of -30 to 70°C and relative humidity up to 95%.
The source lists malfunction vibration resistance from 10 to 55 Hz at 0.75 mm single amplitude. Destructive shock resistance is at least 1,000 m/s² and malfunction shock resistance is at least 300 m/s². Within the M20 roller-plunger group, contact arrangement is the easiest way to separate the available versions: this model provides one normally closed and one normally open path. For the same actuator style, slow-action mechanism and M20 conduit but with two normally closed contacts, see the D4N-4B32 model.
