Omron WLD28-N Sealed Top Roller Plunger Limit Switch
The Omron WLD28-N is a sealed top-roller plunger limit switch designed for precise linear position detection in demanding industrial automation environments. Built with a plunger actuator and a rugged sealed structure, this model supports smooth vertical actuation and consistent switching accuracy. It incorporates a standard built-in switch mechanism with reliable contact performance for control circuits. Engineered for harsh operating conditions, the switch offers excellent resistance to dust, moisture, and mechanical wear. Manufactured by Omron, the WLD28-N forms part of the Omron Limit Switch, widely trusted for durable mechanical limit detection.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | WLD28-N |
Omron WLD28-N 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 |
| Degree of protection | IP67 |
| Construction | Sealed metal housing |
The Omron WLD28-N is widely recognized as an Omron sealed plunger-type limit switch developed for accurate and repeatable position sensing in industrial automation systems. Its top-roller plunger design enables smooth engagement with cams, slides, and moving machine components, ensuring stable actuation with minimal mechanical stress.
In industrial applications, the Omron WLD28-N is commonly used in machine tools, conveyor systems, press machines, and automated assembly lines where reliable stroke and end-position detection is required. The sealed construction enhances durability in dusty or damp environments, supporting consistent operation in challenging installation locations.
Designed for long-term reliability, the switch combines robust mechanical construction with stable electrical characteristics. With industrial-grade protection and dependable internal contacts, the Omron WLD28-N supports continuous operation in automation systems that demand accurate limit switching and high environmental resistance.