Omron D4A-4501N Limit Switch
Omron D4A-4501N Limit Switch is a general-purpose rotary-action limit switch using a snap-action mechanism and DPST-NO/DPST-NC contact form. The model is listed for general load use, with NC current of 30 A max. and NO current of 20 A max. It has 25 mΩ max. contact resistance, electrical durability of 750,000 operations min. at 5 A, 125 VAC, and mechanical durability of 30 million operations min. IP67 protection is specified together with NEMA Type 1, 2, 3, 4, 4X, 5, 6P, 12 and 13 ratings. The D4A-4501N belongs to the D4A Series within the Omron Limit Switch range from Omron.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4A-4501N |
Omron D4A-4501N Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Shape Structure | General-purpose Limit switches |
| Ctuator | Rotary action |
| Contact Form | DPST-NO/DPST-NC |
| Load | General load |
| Inrush Current | NC: 30 A max. NO: 20 A max. |
| Ambient Temperature | Operating: -40 to 100 ℃ |
| Ambient Humidity | 35 to 95% RH (with no icing) |
| Shock Resistance | Destruction: 1,000 m/s 2 max. Malfunction: 300 m/s 2 max. |
| Degree Of Protection | IP67 NEMA Type1, 2, 3, 4, 4X, 5, 6P, 12, 13 |
| Contact Resistance Initial Value | 25 mΩ max. |
| Durability | Electrical: 750,000 operations min. (5 A at 125 VAC) Mechanical: 30 million operations min. |
| Vibration Resistance | Malfunction: 10 to 55 Hz, 1.5 mm double amplitude |
| Operating Mechanism | Snap action |
The Omron D4A-4501N Limit Switch is a general-purpose rotary-action limit switch with snap-action operation and a DPST-NO/DPST-NC contact form. It is listed for general load use, with NC current specified as 30 A max. and NO current as 20 A max. Contact resistance is 25 mΩ max. Electrical durability is 750,000 operations min. at 5 A, 125 VAC, and mechanical durability is 30 million operations min. These values identify the D4A-4501N through its rotary action, snap-action mechanism, DPST contact arrangement, current values, contact resistance, and durability data, bringing the main switching and durability specifications together for this model. Its general-load classification is listed separately from the DPST contact form, with both attributes retained as separate electrical characteristics of the model.
The operating temperature range is -40 to 100°C, with humidity of 35 to 95% RH and no icing noted in the supplied specification. Shock specifications are 1,000 m/s² max. for destruction and 300 m/s² max. for malfunction. Malfunction vibration is 10 to 55 Hz with 1.5 mm double amplitude. The model is rated IP67 and carries NEMA Type 1, 2, 3, 4, 4X, 5, 6P, 12 and 13 classifications. For a D4A Series model with SPST-NO/SPST-NC contacts, see the D4A-3101N.
