Omron D4A-4510N Limit Switch
Omron D4A-4510N is a general-purpose limit switch with a top roller plunger using an 11 mm × 5 mm stainless steel roller for machine position detection. The roller actuator supports smooth contact with moving parts, while the snap-action mechanism provides a defined switching response. Its DPST-NO/DPST-NC contact arrangement provides multiple normally open and normally closed switching paths for control circuits, with high inrush capability. IP67 protection and multiple NEMA enclosure ratings support protected installations, while operation from -20 to 100°C covers a broad temperature range. The D4A-4510N belongs to the D4A Series within the two-circuit roller plunger switch range from Omron industrial control products for position and end-of-travel sensing.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4A-4510N |
Omron D4A-4510N Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Shape Structure | General-purpose Limit switches |
| Ctuator | Top plunger 11 dia. x 5 Stainless steel roller Roller |
| Contact Form | DPST-NO/DPST-NC |
| Load | General load |
| Inrush Current | NC: 30 A max. NO: 20 A max. |
| Ambient Temperature | Operating: -20 to 100 ℃ |
| Ambient Humidity | 35 to 95% RH (with no icing) |
| Shock Resistance | Destruction: 1,000 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) |
| Vibration Resistance | Malfunction: 10 to 55 Hz, 1.5 mm double amplitude |
| Operating Mechanism | Snap action |
The Omron D4A-4510N Limit Switch uses a top roller plunger with an 11 mm × 5 mm stainless steel roller for machine position and end-of-travel detection. The rolling actuator suits moving parts that pass across the sensing point, while the snap-action mechanism provides a defined switching response. Its DPST-NO/DPST-NC contact arrangement provides multiple normally open and normally closed switching paths, allowing one mechanical actuation to control more than one circuit path. Inrush current capability reaches 30 A maximum on the NC side and 20 A maximum on the NO side. IP67 protection and multiple NEMA enclosure ratings support protected installations.
Electrical durability is specified at 750,000 operations minimum at 5 A, 125 VAC, while initial contact resistance is 25 mΩ maximum. The D4A-4510N operates from -20 to 100°C with 35 to 95% relative humidity. Destructive shock resistance reaches 1,000 m/s² maximum, and malfunction vibration resistance covers 10 to 55 Hz at 1.5 mm double amplitude. These characteristics suit top-roller position sensing where multiple switching paths are required from one actuator movement. The stainless steel roller supports smooth contact with targets moving across the actuator. For a related D4A top roller plunger using SPST-NO/SPST-NC switching instead of the DPST arrangement, see the D4A-3110N model.
