Omron SHL-W255 Limit Switch
Omron SHL-W255 is a compact limit switch with a short hinge roller lever and a 9.5 mm × 4.0 mm stainless steel roller for mechanical position detection. The short lever suits cams, slides, and moving parts where limited installation space requires a compact rolling actuator. Its SPDT contact form provides changeover switching for general control loads, while IP67 protection supports dusty or moist factory environments. Operation from -10 to 80°C and long mechanical durability suit repeated machine cycles. The SHL-W255 belongs to the SHL Series within the short roller lever limit switch range from Omron industrial control products for reliable position, travel, and end-of-stroke detection.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | SHL-W255 |
Omron SHL-W255 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Ctuator | Short hinge roller lever 9.5 dia. x 4.0 Stainless steel roller |
| Contact Form | SPDT |
| Frequency | 50/60 Hz |
| Load | General load |
| Ambient Temperature | Operating: -10 to 80 ℃ |
| Ambient Humidity | 35 to 95% RH |
| Pollution Degree | 3 (EN60947-5-1) |
| Shock Resistance | Destruction: 1000 m/s 2 Malfunction: 300 m/s 2 |
| Degree Of Protection | IP67 |
| Contact Resistance Initial Value | 15 mΩ max. |
| Durability | Electrical: 500,000 operations min. Mechanical: 10 million operations min. |
| Insulation Resistance | 100 MΩ min. (at 500 VDC) |
The Omron SHL-W255 Limit Switch uses a short hinge roller lever with a 9.5 mm × 4.0 mm stainless steel roller for mechanical position detection. The compact lever arrangement suits cams, slides, and moving parts where limited installation space requires a short actuator path. Its SPDT contact form provides changeover switching for general control loads at 50/60 Hz. IP67 protection helps the switch operate around dust, water, and common factory contaminants. The -10 to 80°C operating range supports varied industrial environments, while the short roller lever provides rolling contact for targets that sweep across the actuator instead of pressing directly into a plunger.
The SHL-W255 provides at least 10 million mechanical operations and 500,000 electrical operations, supporting repeated switching in automated machinery. Initial contact resistance is 15 mΩ maximum, and insulation resistance is 100 MΩ minimum at 500 VDC. The switch operates with 35 to 95% relative humidity and is specified for pollution degree 3 under EN60947-5-1. Destructive shock resistance is 1,000 m/s², while malfunction shock resistance is 300 m/s². These characteristics support compact roller-lever position and end-of-travel sensing where SPDT switching, sealed construction, and long service life are required. For another SHL Series model using a direct stainless steel plunger instead of a roller lever, see the SHL-D55 model.
