Omron D4B-2A11N Limit Switch
Omron D4B-2A11N is a slow-action limit switch with a roller lever actuator, resin roller, and 2NC contact form. It uses a G1/2 (PF1/2) conduit and operates from 1 mm/s to 0.5 m/s, with a 2 × 2 mm minimum contact gap for the slow-action mechanism. IP67 protection and a 600 V rated insulation voltage are specified. The D4B-2A11N Roller Lever Switch belongs to the D4B-N Series in the Omron Industrial Limit Switch Range from Omron Control Components. Contact resistance is 25 mΩ maximum, while frequency is 50/60 Hz.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4B-2A11N |
Omron D4B-2A11N Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Contact Form | 2NC |
| Shock Resistance | Destruction 1,000 m/s2 min. Malfunction 300 m/s2 min. |
| Degree Of Protection | IP67 |
| Insulation Resistance | 100 MΩ min. |
| Contact Gap | 2 × 2 mm min. (slow-action) 2 × 0.5 mm min. (snap-action) |
| Actuator | Roller lever (resin roller) |
| Vibration Resistance | Malfunction 10 to 55 Hz, 0.75 mm single amplitude |
| Operating Mechanism | Slow-action |
| Conduit Size Conduit Openings | G1/2 (PF1/2) |
| Operating Speed | 1 mm/s to 0.5 m/s |
| Operating Frequency | Mechanical 120 operations/minute; Electrical 30 operations/minute |
| Contact Resistance | 25 mΩ max |
| Rated Insulation Voltage Ui | 600 V |
| Rated Frequency | 50/60 Hz |
| Ambient Operating Temperature | –40 to 80°C (with no icing) |
| Ambient Operating Humidity | 95% max |
| Weight | Approx. 250 g |
The Omron D4B-2A11N Limit Switch uses a roller lever with a resin roller, 2NC contacts, and a slow-action mechanism. The conduit specification is G1/2 (PF1/2), and operating speed ranges from 1 mm/s to 0.5 m/s. For the slow-action mechanism, the contact gap is 2 × 2 mm minimum. Mechanical operation frequency is 120 operations per minute, while electrical operation frequency is 30 operations per minute. Contact resistance is 25 mΩ maximum, insulation resistance is 100 MΩ minimum, rated insulation voltage is 600 V, and frequency is 50/60 Hz. IP67 protection is specified.
Operating temperature ranges from -40 to 80°C with no icing, while humidity is 95% maximum. Malfunction vibration resistance covers 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. The model is therefore defined by its resin roller lever, 2NC contact form, slow-action operation, G1/2 conduit, 2 × 2 mm contact gap, and 600 V insulation rating. The separate 2 × 0.5 mm snap-action contact-gap value shown in the shared source field is not applied to this slow-action model. The source identifies no separate normal load rating for this row. For another D4B-N slow-action 2NC model using a roller plunger actuator, see D4B-2A71N.
