Omron WLD18-LD-N Limit Switch
The Omron WLD18-LD-N Limit Switch offers Sealed top plunger actuator, Screw terminals
(Conduit size: G½) shape, LED (With operation indicator). Manufactured by Omron under the Omron Limit Switch category, this model belongs to the WL Series.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | WLD18-LD-N |
Omron WLD18-LD-N Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Terminal Shape | Screw terminals (Conduit size: G½) |
| Pretravel Pt | 1.7 mm max. |
| Minimum Applicable Load | 5 VDC 1 mA, resistive load, P level |
| Rated Voltage | 10 to 115 VAC/DC |
| Leakage Current Reference Value | Approx. 0.4 mA at 10 VAC/DC Approx. 0.5 mA at 115 VAC/DC |
| Indicator | LED (With operation indicator) |
| Ambient Temperature | -10 to +80°C (with no icing) |
| Ambient Humidity | 35 to 95%RH |
| Shock Resistance | Destruction: 1,000 m/s2 min. Malfunction: 300 m/s2 min. |
| Degree Of Protection | IP67 |
| Insulation Resistance | 100 MΩ min. (at 500 VDC) |
| Actuator | Sealed top plunger |
| Vibration Resistance | Malfunction: 10 to 55 Hz, 1.5-mm double amplitude |
| Contact Resistance | 25 mΩ max. (initial value for the built-in switch) |
| Rated Frequency | 50/60 Hz |
The Omron WLD18-LD-N is a precision two-circuit limit switch designed for detecting small mechanical movements in automated systems. It features a sealed top plunger actuator and a built-in switch optimized for microloads as low as 5 VDC, 1 mA (P-level), supporting safe operation with low current signals. The switch includes an integrated LED operation indicator and screw terminal connections with a G½ conduit entry.
It operates reliably at speeds up to 1.7 mm/s and frequencies of 120 operations/minute (mechanical). Built for durability, it withstands vibrations from 10 to 55 Hz and shock up to 1,000 m/s². The internal contact resistance is 25 mΩ max, and insulation resistance is 100 MΩ at 500 VDC, ensuring signal integrity over time. The WLD18-LD-N functions across a wide temperature range from –10°C to 80°C and up to 95% humidity, and is enclosed in a sealed case with IP67 protection.
