Omron D4N-2122 Limit Switch
Omron D4N-2122 is a snap-action roller lever limit switch using a metal lever, resin roller, and 1NC/1NO contact configuration. A G1/2 single-conduit entry supports wiring, while the actuator works over a 1 to 500 mm/s speed range. IP67 protection, 25 mΩ maximum contact resistance, and 100 MΩ minimum insulation resistance are specified. The D4N-2122 is part of the D4N Series within the snap-action roller lever switch range from Omron control products. Its metal lever, resin roller, and G1/2 conduit define this configuration.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-2122 |
Omron D4N-2122 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. |
| Actuator | Roller lever (metal lever, resin roller) |
| Vibration Resistance | Malfunction 10 to 55 Hz, 0.75 mm single amplitude |
| Operating Mechanism | Snap-action |
| Conduit Size Conduit Openings | 1-conduit,G1/2 |
| Operating Speed | 1 to 500 mm/s |
| Operating Frequency | 30 operations/minute max. |
| Contact Resistance | 25 mΩ max. |
| Rated Insulation Voltage Ui | 300 V |
| Rated Frequency | 50/60 Hz |
| Ambient Operating Temperature | −30 to 70°C (with no icing) |
| Ambient Operating Humidity | 95% max |
| Weight | Approx. 82 g (D4N-1120); Approx. 99 g (D4N-6120) |
The Omron D4N-2122 Limit Switch uses a metal lever with a resin roller and an SPDT-style 1NC/1NO contact arrangement operated by snap action. A G1/2 single-conduit connection differentiates this configuration from D4N versions whose source lists only a generic single conduit. The switch works over an actuator-speed range of 1 to 500 mm/s, with a maximum switching frequency of 30 operations per minute. IP67 protection, 25 mΩ maximum contact resistance, 100 MΩ minimum insulation resistance, and 300 V rated insulation voltage are specified.
The operating range is -30 to 70°C with relative humidity up to 95%. Malfunction vibration resistance is listed at 10 to 55 Hz with 0.75 mm single amplitude. Destructive shock resistance is at least 1,000 m/s², while malfunction shock resistance is at least 300 m/s². Its metal lever, resin roller, 1NC/1NO contacts, and snap-action mechanism define this model. For a D4N roller-lever version using two normally closed contacts instead, see the D4N-2220 model.
