Omron VB-3211 Limit Switch
Omron VB-3211 uses three roller plungers, each specified with a 6.8 mm roller, together with flange construction. The operating-speed range is 0.1 mm/s to 0.5 m/s, with mechanical frequency up to 120 operations per minute and electrical frequency up to 30 operations per minute. IP67 protection, 15 mΩ maximum initial contact resistance, and 100 MΩ minimum insulation resistance are listed. The VB-3211 belongs to the VB Series within the three-plunger limit switch range from Omron switching components. The three-plunger configuration is its clearest distinction from VB-22xx models.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | VB-3211 |
Omron VB-3211 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Number Of Plungers | 3 plungers |
| Shape Of Box | With flange |
| Conduit | Two on the side |
| Ambient Temperature | –10°C to 80°C (with no icing) |
| Ambient Humidity | 35% to 95% |
| Shock Resistance | Destruction: 1,000 m/s2 min. Malfunction: 200 m/s2 min. |
| Degree Of Protection | IP67 |
| Durability | Mechanical: 5,000,000 operations min. Electrical: 300,000 operations min. (10 A at 250 VAC, resistive load) |
| Insulation Resistance | 100 MΩ min. (at 500 VDC) |
| Actuator | Roller plunger (with a 6.8-dia. roller) |
| Vibration Resistance | Malfunction: 10 to 55 Hz, 1.5-mm double amplitude |
| Operating Speed | 0.1 mm to 0.5 m/s |
| Operating Frequency | Mechanical: 120 operations min. Electrical: 30 operations min. |
| Contact Resistance | 15 mΩ max. (initial value) |
| Rated Insulation Voltage Ui | 300 VAC |
| Rated Frequency | 50/60 Hz (AC) |
| Weight | Approx. 580 g |
The Omron VB-3211 Limit Switch is configured with three roller plungers, each using a 6.8 mm roller, and flange construction. Operating speed ranges from 0.1 mm/s to 0.5 m/s. Mechanical operating frequency is 120 operations per minute and electrical frequency is 30 operations per minute. Mechanical durability is five million operations minimum, while electrical durability is 300,000 operations minimum under the listed 10 A at 250 VAC resistive-load test condition. IP67 protection, 15 mΩ maximum initial contact resistance, 100 MΩ minimum insulation resistance, and 300 VAC rated insulation voltage are specified.
The operating range extends from -10 to 80°C with relative humidity from 35 to 95%. Malfunction vibration resistance is 10 to 55 Hz at 1.5 mm double amplitude. Shock resistance is specified at 1,000 m/s² minimum for destruction and 200 m/s² minimum for malfunction. The three-plunger configuration is the primary difference from the two-plunger VB-2211 while retaining roller-plunger actuation and flange construction. For the two-plunger version, see the VB-2211.
