Omron VB-3241 Limit Switch
Omron VB-3241 is a multiple limit switch with three roller plungers, each fitted with a 6.8 mm roller for repeatable multi-point position detection. The no-flange construction supports compact mounting, while two side cable entries help route wiring where access is limited. Operating speed ranges from 0.1 mm/s to 0.5 m/s, and the switch provides 5 million minimum mechanical operations with IP67 protection. The VB-3241 belongs to the VB Series within the multiple roller plunger limit switch range from Omron machine control products for multi-position sensing on conveyors, indexing mechanisms, and automated assemblies requiring three separate actuation points in compact automation and control applications.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | VB-3241 |
Omron VB-3241 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Number Of Plungers | 3 plungers |
| Shape Of Box | Without 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-3241 Limit Switch uses three roller plungers, each fitted with a 6.8 mm roller, for multi-point position detection in a single switch body. The rolling actuators provide smooth mechanical contact, while the no-flange construction supports compact mounting. Two side cable entries help keep wiring accessible when the unit is installed close to other components. Operating speed ranges from 0.1 mm/s to 0.5 m/s, with up to 120 mechanical and 30 electrical operations per minute. IP67 protection supports use around dust, water, or oil, and operation extends from -10 to 80°C.
Mechanical durability is specified at 5 million operations minimum, while electrical durability reaches 300,000 operations minimum at 10 A, 250 VAC resistive load. Initial contact resistance is 15 mΩ maximum, and insulation resistance is 100 MΩ minimum at 500 VDC. The VB-3241 withstands destructive shock of at least 1,000 m/s² and malfunction shock of at least 200 m/s². Malfunction vibration resistance covers 10 to 55 Hz at 1.5 mm double amplitude. These characteristics support three-point travel, indexing, and sequence detection where a no-flange body and side-entry wiring are preferred. The two-side entry layout helps keep the overall installation compact when wiring access is limited. For a related three-roller-plunger VB model with four cable-entry directions, see the VB-3251 model.
