Omron D4C-3320 Limit Switch
Omron D4C-3320 is a general-purpose limit switch with an R38 roller lever and stainless steel roller for machine position detection. The lever configuration provides a wider target approach path than a direct plunger, making it suitable for cams, slides, conveyors, and moving machine parts. Its SPDT contact form supports changeover switching for general loads, with a 4 A at 30 VDC rating. IP67 protection supports demanding factory environments. The D4C-3320 belongs to the D4C Series within the R38 roller lever limit switch range from Omron automation products for dependable machine travel, position, and end-of-stroke detection.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4C-3320 |
Omron D4C-3320 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Shape Structure | General-purpose Limit switches |
| Ctuator | Roller lever 17.5 dia. x 7 Sintered stainless steel roller R38 |
| Contact Form | SPDT |
| Electrical Ratings | 4 A at 30 VDC |
| Load | General load |
| Inrush Current | NC: 20 A max. NO: 10 A max. |
| Ambient Temperature | Operating: -10 to 70 ℃ (with no icing) |
| Ambient Humidity | 35 to 95% RH |
| Pollution Degree | 3 (EN60947-5-1) |
| Shock Resistance | Destruction: 1,000 m/s 2 max. Malfunction: 500 m/s 2 max. |
| Classification Of Protection Against Electric Shock | Class I (with earth wire) |
| Degree Of Protection | IP67 |
| Permissible Operating Speed | Electrical: 30 operations / 1 minute max. Mechanical: 120 operations / 1 minute max. |
The Omron D4C-3320 Limit Switch uses an R38 roller lever with a 17.5 mm × 7 mm sintered stainless steel roller for mechanical position detection. The lever arrangement extends the contact point away from the switch body and allows moving cams, slides, and machine parts to actuate the switch through smooth rolling contact. Its SPDT contact form provides changeover switching for general loads, with a 4 A at 30 VDC rating. Inrush current capability reaches 20 A maximum on the NC side and 10 A maximum on the NO side. The model supports up to 120 mechanical operations per minute and 30 electrical operations per minute.
The D4C-3320 provides IP67 protection and operates from -10 to 70°C with 35 to 95% relative humidity. It is specified for pollution degree 3 under EN60947-5-1 and classified as Class I with an earth wire. Destructive shock resistance reaches 1,000 m/s² maximum, while malfunction shock resistance reaches 500 m/s² maximum. These characteristics suit repeated roller-lever position sensing on conveyors, machine tools, transfer mechanisms, and other automated equipment where the target follows an arc or wider approach path. The R38 lever geometry is a key actuator feature when comparing this model with plunger-operated D4C versions. For another roller-lever limit switch with a 17.5 mm × 7 mm roller, see the D4CC-3024 model.
