Omron D4E-1C20N Limit Switch
Omron D4E-1C20N is a compact limit switch with a 7.8 mm stainless steel plunger for direct mechanical position detection. The straight actuator suits machine stops, slides, jigs, and other moving parts that approach the switch head-on, while the SPDT contact form provides changeover switching for general control circuits. IP67 protection and operation from -10 to 80°C support demanding factory environments, and the durable construction suits repeated machine cycles. The D4E-1C20N belongs to the D4E-N Series within the compact plunger limit switch range from Omron automation components for reliable machine position and end-of-travel sensing.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4E-1C20N |
Omron D4E-1C20N Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Ctuator | Plunger 7.8 dia. Stainless-steel plunger |
| Contact Form | SPDT |
| Frequency | 50/60 Hz |
| Load | General load |
| Inrush Current | NC: 10 A max. NO: 10 A max. |
| Ambient Temperature | Operating: -10 to 80 ℃ |
| Ambient Humidity | 35 to 95% RH |
| 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. (5 A at 250 VAC) Mechanical: 10 million operations min. |
| Insulation Resistance | 100 MΩ min. (at 500 VDC) |
The Omron D4E-1C20N Limit Switch uses a 7.8 mm stainless steel plunger for direct mechanical position and end-of-travel detection. The straight plunger actuator suits machine parts that approach the switch head-on, providing a defined contact point for slides, stops, jigs, and compact automation mechanisms. Its SPDT contact form provides changeover switching for general control loads, with 50/60 Hz operation. IP67 protection helps the enclosed switch withstand dust, water, and common factory contaminants. The operating temperature range extends from -10 to 80°C, while relative humidity from 35 to 95% supports use across demanding industrial environments.
The D4E-1C20N is specified for at least 10 million mechanical operations and 500,000 electrical operations at 5 A, 250 VAC, supporting frequent switching in machine applications. Initial contact resistance is 15 mΩ maximum, while insulation resistance is 100 MΩ minimum at 500 VDC. Destructive shock resistance is specified at 1,000 m/s² and malfunction shock resistance at 300 m/s². The combination of stainless steel plunger actuation, SPDT switching, sealed IP67 construction, and long operating life makes the model suitable for repeatable direct-contact position sensing in automated production equipment reliably. For a related D4E-N model using a roller plunger for moving targets, see the D4E-1D20N model.
