Omron D4C-4220 Limit Switch
Omron D4C-4220 provides microload switching through an R38 roller lever fitted with a 17.5 mm × 7 mm sintered stainless steel roller. The SPDT contacts support 0.1 A at 125 VAC and 0.1 A at 30 VDC, while the switch comes with a 3 m four-core VCTF oil-resistant cable. IP67 protection, operation from -10 to 70°C, and 300 mΩ maximum contact resistance are part of the supplied specifications. The D4C-4220 belongs to the D4C Series within the microload roller lever limit switch range from Omron limit switch products, combining low-current switching with lever actuation.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4C-4220 |
Omron D4C-4220 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 | 0.1 A at 125 VAC/ 0.1 A at 30 VDC |
| Load | Micro load |
| Ambient Temperature | Operating: -10 to 70 ℃ (with no icing) |
| Ambient Humidity | 35 to 95% RH |
| Shock Resistance | Destruction: 1,000 m/s 2 max. Malfunction: 500 m/s 2 max. |
| Degree Of Protection | IP67 |
| Contact Resistance Initial Value | 300 mΩ max. |
| Durability | Electrical: 200,000 operations min. (5 A at 125 VAC) Mechanical: 10 million operations min. |
| Cable Specifications | VCTF oil-resistant cable, 4 cores, 3 m Nominal sectional area: 0.75 mm 2 Diameter: 7.6 dia. |
The Omron D4C-4220 Limit Switch is the roller-lever member of this D4C microload group, using an R38 lever and a 17.5 mm × 7 mm sintered stainless steel roller. Its SPDT contacts are rated at 0.1 A at 125 VAC and 0.1 A at 30 VDC. Wiring is provided through a four-core, 3 m VCTF oil-resistant cable with 0.75 mm² nominal conductor area and 7.6 mm overall diameter. IP67 protection and an operating temperature range of -10 to 70°C are specified, along with relative humidity from 35 to 95%.
Maximum contact resistance is 300 mΩ, while mechanical durability is listed at 10 million operations minimum. The source also gives shock ratings of 1,000 m/s² maximum for destruction and 500 m/s² maximum for malfunction. The R38 lever distinguishes this model from the pin-plunger and roller-plunger microload versions even though the stated electrical ratings are similar. This means actuator geometry is the most useful selection factor once the circuit load has already been established. For the roller-plunger alternative using the same microload ratings and a 3 m cable, see the D4C-4203 model.
