Omron D4E-2A20N Limit Switch
Omron D4E-2A20N is a microload D4E-N limit switch using an 11 mm × 4.7 mm stainless sintered alloy roller plunger with SPDT contacts. Its rolling actuator is suited to moving targets that pass across the sensing point, while the source identifies this version specifically for microload use. IP67 protection, 15 mΩ maximum contact resistance, 100 MΩ minimum insulation resistance, and 10 million minimum mechanical operations are listed. The D4E-2A20N belongs to the D4E-N Series within the microload roller plunger switch range from Omron switching components.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4E-2A20N |
Omron D4E-2A20N Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Ctuator | Roller plunger 11 dia. x 4.7 Stainless sintered alloy rollers |
| Contact Form | SPDT |
| Frequency | 50/60 Hz |
| Load | Micro 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 | Mechanical: 10 million operations min. |
| Insulation Resistance | 100 MΩ min. (at 500 VDC) |
The Omron D4E-2A20N Limit Switch is identified as a microload model with an 11 mm × 4.7 mm stainless sintered alloy roller plunger and SPDT contacts. The roller-plunger arrangement provides a compact rolling contact surface for targets crossing the actuator. The source lists 50/60 Hz operation, maximum inrush current of 10 A for both NC and NO, and an operating temperature range from -10 to 80°C. Relative humidity is specified from 35 to 95%, while IP67 protection covers the switch body. Contact resistance is 15 mΩ maximum and insulation resistance is 100 MΩ minimum at 500 VDC.
Mechanical durability is listed at 10 million operations minimum. No explicit microload current or electrical durability value is supplied for this specific row, so those values are not borrowed from other D4E-N models. This makes actuator style, microload designation, enclosure protection, and mechanical life the clearest source-supported selection points. The standard roller plunger is useful when the target passes across the roller without requiring the directional orientation of a cross roller. For a related D4E-N roller-plunger model intended for general-load operation, see the D4E-1A00N model.
