Omron VB-2121 Limit Switch
Omron VB-2121 Limit Switch is a two-plunger multiple limit switch with bevel plunger actuators and a flange configuration. Its operating speed is 0.1 mm to 0.5 m/s. Operation frequency is specified as 120 operations/minute mechanical and 30 operations/minute electrical. The model has 15 mΩ max. initial contact resistance, 300 VAC rated insulation voltage, and 100 MΩ min. insulation resistance at 500 VDC. Mechanical durability is 5,000,000 operations min., while electrical durability is 300,000 operations min. at 10 A, 250 VAC resistive load. IP67 protection is also specified. The VB-2121 belongs to the VB Series within the Omron Limit Switch range from Omron.
| 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 Limit Switch is listed with two bevel plungers and a flange configuration. Its operating speed is 0.1 mm to 0.5 m/s. Operation frequency is specified as 120 operations/minute for mechanical operation and 30 operations/minute for electrical operation. Initial contact resistance is 15 mΩ max., rated insulation voltage is 300 VAC, frequency is 50/60 Hz AC, and insulation resistance is 100 MΩ min. at 500 VDC. Mechanical durability is 5,000,000 operations min., while electrical durability is 300,000 operations min. at 10 A, 250 VAC resistive load. These figures define the VB-2121 through plunger count, bevel-plunger actuator type, flange configuration, operating speed, operation frequency, resistance, voltage, and durability, without adding an application beyond the supplied specifications.
The VB-2121 has IP67 protection and is specified for -10°C to 80°C operation with no icing and 35% to 95% humidity. Malfunction vibration is listed at 10 to 55 Hz with 1.5 mm double amplitude. Shock values are 1,000 m/s² min. for destruction and 200 m/s² min. for malfunction. In the same uploaded VB group, the VB-2141 also has two bevel plungers and the same listed speed, durability, resistance, voltage, temperature, vibration, and shock values, but it is listed without a flange rather than with a flange. See the VB-2141.
