Omron VB-2121 Limit Switch
The Omron VB-2121 Limit Switch offers Bevel plunger actuator, 2 plungers, 0.1 mm to 0.5 m/s speed. Manufactured by Omron under the Omron Limit Switch category, this model belongs to the VB Series.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | VB-2121 |
Omron VB-2121 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Number Of Plungers | 2 plungers |
| Shape Of Box | With flange |
| Conduit | Four |
| 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 | Bevel plunger |
| 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-2121 is a robust multiple limit switch designed for use in heavy-duty industrial environments. It features a bevel plunger actuator with dual plungers and a flange-type enclosure for secure panel mounting. Supporting a switching speed of 0.1 mm/s to 0.5 m/s, the switch handles both mechanical and electrical operation frequencies of 120 and 30 ops/min respectively.
This model is rated for 10 A at 250 VAC (resistive load) and has an electrical durability of at least 300,000 operations. With a long mechanical life exceeding 5 million cycles, it suits applications requiring high actuation frequency and repeatability. Its IP67-rated body ensures protection against dust and water, while the rugged housing resists vibration and shock up to 1,000 m/s².
With excellent insulation resistance (100 MΩ min.) and low contact resistance (15 mΩ max.), the VB-2121 is ideal for positioning control, mechanical stops, and limit detection in factory automation.
