Omron D4F-302-3R Limit Switch
Omron D4F-302-3R uses a metal roller-plunger actuator with 2NC/2NO slow-action contacts. The model is specified with a 3 m cable in horizontal orientation, a 2 × 2 mm minimum contact gap, and an operating-speed range from 1 mm/s to 0.5 m/s. IP67 protection is also listed. The D4F-302-3R belongs to the D4F Series within the 2NC/2NO roller plunger limit switch range from Omron. Its 3 m cable, horizontal orientation, metal roller, four-contact configuration, and slow-action mechanism provide the clearest model-level distinction within this D4F group and separate it from the 1 m horizontal version in the same D4F-302 group.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4F-302-3R |
Omron D4F-302-3R Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Contact Form | 2NC/2NO |
| Shock Resistance | Destruction 1,000 m/s2 min. Malfunction 300 m/s2 min. |
| Degree Of Protection | IP67 |
| Insulation Resistance | 100 MΩ min. |
| Cable Length | 3 m |
| Pull Outing Direction Of Cable | Horizontal |
| 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-302-3R Limit Switch supports operating speeds from 1 mm/s to 0.5 m/s. Mechanical operation frequency is 120 operations per minute, while electrical operation frequency is 30 operations per minute. For the 3 m cable, maximum contact resistance is 500 mΩ. Insulation resistance is 100 MΩ minimum, rated insulation voltage is 250 V, and frequency is 50/60 Hz. These values complete the secondary electrical profile behind the metal roller plunger, 2NC/2NO slow-action contacts, horizontal orientation, 3 m cable, and 2 × 2 mm minimum contact gap.
Operating temperature ranges from -30 to 70°C with no icing, and humidity is 95% maximum. Malfunction vibration resistance is 10 to 55 Hz at 0.75 mm single amplitude. Destructive shock resistance is 1,000 m/s² minimum and malfunction shock resistance is 300 m/s² minimum. IP67 protection is specified. The 500 mΩ maximum contact resistance corresponds specifically to the 3 m cable and provides the clearest electrical distinction from the 1 m D4F-302 version. Within the D4F-302 group, the 3 m horizontal cable, 500 mΩ contact resistance, metal roller plunger, and 2NC/2NO slow-action contacts provide the clearest exact-model specification set. For the related shorter-cable model using the same metal roller plunger and 2NC/2NO contacts, see D4F-302-1R.
