Omron WLD28-LD Sealed Top Roller Plunger Limit Switch
The Omron WLD28-LD is a sealed top-roller plunger limit switch designed for accurate linear position detection in industrial automation environments. Built with a plunger actuator and top-mounted roller, this model enables smooth vertical actuation and consistent switching in repetitive machine operations. It integrates a standard built-in switch mechanism with a two-circuit DPDT contact configuration, supporting stable signal control in industrial panels. The sealed construction enhances resistance against dust and moisture, making it suitable for harsh operating conditions. Manufactured by Omron, the WLD28-LD is part of the Omron Limit Switch, recognized for mechanical durability and dependable limit detection.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | WLD28-LD |
Omron WLD28-LD Plunger Actuated Limit Switch ā Technical Overview
| Specification | Value |
|---|---|
| Actuator | Sealed Top-Roller Plunger |
| Contact Form | DPDT |
| Contact Configuration | Two-Circuit |
| Rated Switching Capacity | 10 A at 500 VAC |
| Current Rating | 100 mA |
| Voltage Rating | 125 VAC / 30 VDC |
| Terminals | Screw Terminals (GĀ½ conduit) |
| Pretravel (PT) | 1.7 mm max |
| Mechanical Life | 500,000 operations |
| Electrical Life | 10,000,000 operations |
| Degree of protection | IP67 |
The Omron WLD28-LD is widely recognized as an Omron sealed top-roller plunger limit switch developed for reliable and repeatable mechanical sensing in industrial automation systems. Its plunger actuator design allows controlled stroke detection, ensuring accurate switching even under continuous mechanical stress.
In industrial applications, the Omron WLD28-LD is commonly used in machine tools, conveyor systems, presses, and automated assembly lines where vertical motion or end-of-travel detection is required. The sealed top-roller plunger minimizes wear during contact with moving components while maintaining consistent actuation points.
Engineered for long-term operational reliability, the switch offers robust internal construction and stable electrical characteristics. With sealed housing protection and a standard built-in switch design, the Omron WLD28-LD supports dependable performance in demanding industrial environments requiring precise limit detection.