Omron WLD3-LD Top Ball Plunger Limit Switch
The Omron WLD3-LD is a Top Ball Plunger Limit Switch designed for precise linear position detection in industrial automation environments. This model uses a ball-type plunger actuator that enables smooth omnidirectional contact with moving machine parts, ensuring consistent actuation even under slight misalignment. Built with a standard built-in DPDT switch mechanism, it supports reliable signal switching in control circuits. Designed for durability and stable operation, the switch is commonly integrated into automation panels and machinery. Manufactured by Omron, the WLD3-LD is part of the Omron Limit Switch, recognized for rugged construction and long mechanical life.

| Brand | Omron |
| Product | Limit Switch |
| Model Number | WLD3-LD |
Omron WLD3-LD Plunger Actuated Limit Switch â Technical Overview
| Specification | Value |
|---|---|
| Actuator | Top Ball 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 |
| Indicator | LED |
| Electrical Application | Low-level signal circuits |
| Degree of protection | IP67 |
The Omron WLD3-LD is widely identified as an Omron top ball plunger limit switch developed for accurate and repeatable mechanical sensing in industrial automation systems. Its ball plunger actuator allows smooth rolling contact, reducing friction and mechanical wear while maintaining precise switching points.
In industrial applications, the Omron WLD3-LD is commonly used in machine tools, automated assembly lines, presses, and material handling equipment where vertical or angled motion detection is required. The plunger-based actuation ensures stable operation in compact installations and repetitive motion environments.
Designed for long-term operational reliability, the switch offers consistent electrical performance and mechanical endurance under continuous operation. With a sealed housing and industrial-grade internal components, the Omron WLD3-LD supports dependable limit detection in demanding automation conditions.