Omron D4F-320-3D Limit Switch
Omron D4F-320-3D uses a metal lever with a resin roller and 2NC/2NO slow-action contacts for multi-circuit position switching. The actuator is vertically oriented and connected through a 3 m cable, giving more wiring reach than the 1 m D4F-320 variants. Operating speed is specified from 1 mm/s to 0.5 m/s, with IP67 protection and a minimum 2 × 2 mm contact gap. The D4F-320-3D belongs to the D4F Series within the prewired roller lever switch range from Omron switching components. The 3 m cable is its main model difference.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4F-320-3D |
Omron D4F-320-3D 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 | Vertical |
| Contact Gap | 2 × 2 mm min. |
| Actuator | Roller lever (Metal lever, resin 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-320-3D Limit Switch uses a roller lever made from a metal lever and resin roller with 2NC/2NO slow-action contacts. The actuator is vertically oriented and paired with a 3 m cable, providing more routing distance than the 1 m D4F-320 versions. Operating speed is specified from 1 mm/s to 0.5 m/s, while switching frequency reaches 120 mechanical and 30 electrical operations per minute. A 2 × 2 mm minimum contact gap, IP67 protection, and 100 MΩ minimum insulation resistance are listed.
The 3 m cable gives a maximum specified contact resistance of 500 mΩ. The model operates from -30 to 70°C and supports relative humidity up to 95%. Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude. Shock resistance is at least 1,000 m/s² for destruction and 300 m/s² for malfunction. Within the supplied D4F-320 group, its 3 m lead is the main distinction while retaining vertical roller-lever actuation and four-contact switching. For the shorter 1 m version with the same orientation, see the D4F-320-1D model.
