Omron VB-4121 Limit Switch
Omron VB-4121 Limit Switch is a four-plunger multiple limit switch with bevel plungers and flange mounting. The listed operating speed is 0.1 mm to 0.5 m/s, while operation frequency is specified as 120 operations/minute for mechanical operation and 30 operations/minute for electrical operation. Its electrical durability is 300,000 operations min. at 10 A, 250 VAC resistive load, and mechanical durability is 5,000,000 operations min. The model has IP67 protection, 15 mΩ max. initial contact resistance, 300 VAC rated insulation voltage, and 100 MΩ min. insulation resistance at 500 VDC. The VB-4121 belongs to the VB Series within the Omron Limit Switch range from Omron.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | VB-4121 |
Omron VB-4121 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Number Of Plungers | 4 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-4121 Limit Switch is listed with four bevel plungers and flange mounting. 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. Contact resistance is 15 mΩ max. as an initial value, rated insulation voltage is 300 VAC, and frequency is 50/60 Hz for AC. Mechanical durability is 5,000,000 operations min., while electrical durability is 300,000 operations min. at 10 A, 250 VAC resistive load. These values define the model through plunger count, actuator form, mounting method, speed, frequency, and durability. The four-plunger arrangement and bevel plunger actuator are the core mechanical characteristics stated for this VB configuration.
The VB-4121 has IP67 protection and is specified for operation from -10°C to 80°C with no icing and 35% to 95% humidity. Insulation resistance is 100 MΩ min. at 500 VDC. Malfunction vibration is 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. Together, these specifications place the electrical, mechanical, enclosure, temperature, humidity, vibration, and shock characteristics in one model-specific description. For another model in the VB product range, see the VB-2121.
