Omron D4N-212G Limit Switch
Omron D4N-212G Limit Switch uses an adjustable roller lever, form lock, with a metal lever and resin roller. The model has a 1NC/1NO contact form, snap-action operation, and a 1-conduit, G1/2 configuration. Operating speed is specified as 1 to 500 mm/s, with an operation frequency of 30 operations/minute max. Electrical values include 25 mΩ max. contact resistance, 300 V rated insulation voltage, 50/60 Hz frequency, and 100 MΩ min. insulation resistance. IP67 protection, -30 to 70°C operation with no icing, and 95% max. humidity are listed for this model. The D4N-212G belongs to the D4N Series within the Omron Limit Switch range from Omron.

| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4N-212G |
Omron D4N-212G 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 | Adjustable roller lever, form lock (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-212G Limit Switch uses an adjustable roller lever, form lock, with a metal lever and resin roller. The switch has a 1NC/1NO contact form, snap-action operation, and a 1-conduit, G1/2 connection specification. Operating speed is listed as 1 to 500 mm/s and operation frequency as 30 operations/minute max. Electrical data includes 25 mΩ max. contact resistance, 300 V rated insulation voltage, 50/60 Hz frequency, and 100 MΩ min. insulation resistance. These characteristics define the D4N-212G through actuator construction, contact arrangement, action mechanism, conduit format, operating speed, operation frequency, and electrical values. The G1/2 designation belongs specifically to the conduit specification, while the metal lever and resin roller describe the adjustable form-lock actuator.
The D4N-212G carries IP67 protection and is specified for an operating temperature range of -30 to 70°C with no icing and humidity of 95% max. Malfunction vibration is 10 to 55 Hz at 0.75 mm single amplitude. Shock specifications are 1,000 m/s² min. for destruction and 300 m/s² min. for malfunction. The D4N-412G in the same batch lists the same actuator description, 1NC/1NO contacts, snap-action operation, operating-speed range, operation-frequency limit, resistance, voltage, and environmental values, while its conduit specification is M20 instead of G1/2. See the D4N-412G.


