Omron D4F-102-1D Limit Switch
Omron D4F-102-1D is a slow-action D4F limit switch with a metal roller plunger, 1NC/1NO contacts, and a 1 m cable. The actuator is arranged for vertical operation and supports movement speeds from 1 mm/s to 0.5 m/s. A minimum 2 × 2 mm contact gap, IP67 protection, and 100 MΩ minimum insulation resistance are specified. The D4F-102-1D belongs to the D4F Series within the slow-action roller plunger switch range from Omron limit switch products, combining a metal roller with 1NC/1NO switching.

| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4F-102-1D |
Omron D4F-102-1D 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. |
| Cable Length | 1 m |
| Pull Outing Direction Of Cable | Vertical |
| Contact Gap | 2 × 2 mm min. |
| Actuator | Roller plunger (Metal roller) |
| Vibration Resistance | Malfunction 10 to 55 Hz, 0.75 mm single amplitude |
| Operating Mechanism | Slow-action |
| Operating Speed | 1 mm/s to 0.5 m/s |
| Operating Frequency | Mechanical 120 operations/minute; Electrical 30 operations/minute |
| Contact Resistance | 300 mΩ max. (with 1 m cable), 500 mΩ max. (with 3 m cable), 700 mΩ max. (with 5 m cable) |
| Rated Insulation Voltage Ui | 250 V |
| Rated Frequency | 50/60 Hz |
| Ambient Operating Temperature | −30 to 70°C (with no icing) |
| Ambient Operating Humidity | 95% max |
The Omron D4F-102-1D Limit Switch uses a metal roller plunger and a slow-action 1NC/1NO contact configuration. This model is supplied with a 1 m cable and uses vertical actuator orientation. Operating speed extends from 1 mm/s to 0.5 m/s, with mechanical operation permitted up to 120 operations per minute and electrical operation up to 30 operations per minute. The minimum contact gap is 2 × 2 mm. IP67 protection and 100 MΩ minimum insulation resistance are specified, together with operation from -30 to 70°C and relative humidity up to 95%.
Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude. Shock resistance is specified at 1,000 m/s² minimum for destruction and 300 m/s² minimum for malfunction. With a 1 m cable, contact resistance is listed at 300 mΩ maximum. The key combination is therefore a metal roller plunger, 1NC/1NO slow-action contacts, vertical orientation, and short cable connection. For a D4F model that keeps the metal roller-plunger actuator but changes to 2NC contacts and horizontal orientation, see the D4F-202-1R model.


