Omron D4F-120-1R Limit Switch
Omron D4F-120-1R is a horizontal-orientation roller lever switch with a metal lever, resin roller, and 1NC/1NO slow-action contacts. A 1 m cable is provided, and the actuator supports operating speeds from 1 mm/s to 0.5 m/s. The switch carries IP67 protection, 100 MΩ minimum insulation resistance, and a minimum 2 × 2 mm contact gap. The D4F-120-1R sits within the D4F Series and the horizontal roller lever switch range from Omron control components. Horizontal actuator orientation is the key difference from D4F-120-1D.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4F-120-1R |
Omron D4F-120-1R 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 | Horizontal |
| 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 |
| Weight | Approx. 220 g |
The Omron D4F-120-1R Limit Switch retains the metal-lever and resin-roller actuator used by the D4F-120 family but changes the operating orientation to horizontal. It uses slow-action 1NC/1NO contacts and a 1 m cable, with an operating-speed range from 1 mm/s to 0.5 m/s. Mechanical operating frequency is specified at 120 operations per minute and electrical frequency at 30 operations per minute. The minimum contact gap is 2 × 2 mm. IP67 protection, 100 MΩ minimum insulation resistance, and operation from -30 to 70°C are listed.
With the 1 m cable, contact resistance is specified at 300 mΩ maximum. Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude. The switch withstands destructive shock of at least 1,000 m/s² and malfunction shock of at least 300 m/s². Because the actuator, contacts, and cable length closely match the vertical version, orientation becomes the primary model-selection difference. For the corresponding vertically oriented 1 m roller-lever version, see the D4F-120-1D model.
