Omron D4E-1G21N Limit Switch
Omron D4E-1G21N combines a 9.5 mm × 4 mm stainless sintered alloy roller lever with SPDT switching for mechanical position and travel detection. Unlike the D4E-1G10N, this source row emphasizes general-load operation and lists 500,000 minimum electrical operations at 5 A, 250 VAC. IP67 protection, 15 mΩ maximum contact resistance, 100 MΩ minimum insulation resistance, and 10 million minimum mechanical operations are specified. The D4E-1G21N belongs to the D4E-N Series within the roller lever switch range from Omron limit switch products.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4E-1G21N |
Omron D4E-1G21N Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Ctuator | Roller lever 9.5 dia. x 4.0 Stainless sintered alloy rollers |
| 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-1G21N Limit Switch shares the 9.5 mm × 4 mm stainless sintered alloy roller-lever geometry used by other D4E-N lever models, but its supplied specifications emphasize general-load durability. The SPDT switch operates at 50/60 Hz, with maximum inrush current of 10 A specified for both NC and NO. Environmental specifications include an operating temperature of -10 to 80°C, 35 to 95% relative humidity, and IP67 protection. Contact resistance is 15 mΩ maximum and insulation resistance is 100 MΩ minimum at 500 VDC.
Electrical durability is stated as 500,000 operations minimum at 5 A, 250 VAC, while mechanical durability reaches 10 million operations minimum. The source also gives destructive shock resistance of 1,000 m/s² and malfunction shock resistance of 300 m/s². Because a separate rated-load field is blank for this model, the durability-test load is not presented as its normal contact rating. The useful comparison is therefore actuator geometry and endurance data. For the same roller-lever dimensions with an explicit 1 A at 30 VDC rating, see the D4E-1G10N model.
