Omron D4C-1633 Limit Switch
Omron D4C-1633 is a general-purpose limit switch with a 12 mm × 4.4 mm cross roller plunger using a sintered stainless steel roller for directional position detection. The rolling actuator suits moving parts that pass across the sensing point, while the SPDT contact form provides changeover switching for general loads. Electrical ratings of 5 A at 250 VAC and 4 A at 30 VDC support common control circuits, and the specified operating-speed range is 0.1 mm/s to 0.5 m/s. The D4C-1633 belongs to the D4C Series within the cross roller plunger switch range from Omron automation products for directional machine travel, position, and end-point sensing with rolling mechanical contact.

| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4C-1633 |
Omron D4C-1633 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Shape Structure | General-purpose Limit switches |
| Ctuator | Cross roller plunger 12 dia. x 4.4 Sintered stainless steel roller |
| Contact Form | SPDT |
| Electrical Ratings | 5 A at 250 VAC/ 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 | 0.1 mm/s to 0.5 m/s |
The Omron D4C-1633 Limit Switch uses a 12 mm × 4.4 mm cross roller plunger with a sintered stainless steel roller for directional machine position detection. The rolling actuator suits moving parts that pass across the sensing point, while the SPDT contact form provides changeover switching for general loads. Electrical ratings are 5 A at 250 VAC and 4 A at 30 VDC, with inrush capability of 20 A maximum on the NC side and 10 A maximum on the NO side. The specified operating-speed range is 0.1 mm/s to 0.5 m/s. IP67 protection covers the enclosed switch body.
The D4C-1633 operates from -10 to 70°C with 35 to 95% relative humidity and is listed for pollution degree 3 under EN60947-5-1. It is a Class I device 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 directional roller-plunger sensing where both the target approach and operating speed need to be considered during model selection. The cross roller provides rolling contact for movement across the actuator rather than direct axial actuation. For a related D4C cross roller plunger model with the same electrical ratings and specified operation-frequency values, see the D4C-1603 model.


