Omron D4A-3301N Limit Switch
Omron D4A-3301N is a general-purpose rotary-action limit switch with snap-action switching for machine position and travel detection. The rotary operating format suits applications where mechanical movement is transferred through a lever or rotating actuator arrangement rather than direct plunger contact. Its SPST-NO/SPST-NC contact form provides separate switching paths for general loads, with high inrush capability on the NC and NO sides. IP67 protection and multiple NEMA enclosure ratings support protected installations, while operation from -10 to 80°C suits common machine applications. The D4A-3301N belongs to the D4A Series within the rotary action limit switch range from Omron industrial control products for position and travel sensing.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4A-3301N |
Omron D4A-3301N Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Shape Structure | General-purpose Limit switches |
| Ctuator | Rotary action |
| Contact Form | SPST-NO/SPST-NC |
| Load | General load |
| Inrush Current | NC: 30 A max. NO: 20 A max. |
| Ambient Temperature | Operating: -10 to 80 ℃ |
| Ambient Humidity | 35 to 95% RH (with no icing) |
| Shock Resistance | Destruction: 1,000 m/s 2 max. Malfunction: 600 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: 200,000 operations min. (1 A at 125 VAC) Mechanical: 10 million operations min. |
| Vibration Resistance | Malfunction: 10 to 55 Hz, 1.5 mm double amplitude |
| Operating Mechanism | Snap action |
The Omron D4A-3301N Limit Switch uses rotary action with a snap-action switching mechanism for machine position and travel detection. The rotary format is suited to mechanisms where movement is transferred through a rotating actuator arrangement rather than a direct plunger. Its SPST-NO/SPST-NC contact form provides separate normally open and normally closed switching paths for general loads. 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 machine installations, while initial contact resistance is specified at 25 mΩ maximum.
Mechanical durability is specified at 10 million operations minimum, while electrical durability reaches 200,000 operations minimum at 1 A, 125 VAC. The D4A-3301N operates from -10 to 80°C with 35 to 95% relative humidity. Destructive shock resistance reaches 1,000 m/s² maximum and malfunction shock resistance reaches 600 m/s² maximum. Malfunction vibration resistance covers 10 to 55 Hz at 1.5 mm double amplitude. These characteristics suit repeated rotary position feedback where a snap-action response and separate NO/NC switching paths are required. The 10-million-operation mechanical rating differentiates this model from higher-cycle rotary versions in the same D4A family. For a related D4A rotary model with 50 million mechanical operations, see the D4A-3E01N model.
