Omron D4V-8166Z Limit Switch
The Omron D4V-8166Z Limit Switch offers Coil spring actuator, cable length, rating. Manufactured by Omron under the Omron Limit Switch category, this model belongs to the D4V Series.

| Brand | Omron |
| Product | Limit Switch |
| Model Number | D4V-8166Z |
Omron D4V-8166Z Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Ambient Temperature | −20°C to 60°C (with no icing) |
| Ambient Humidity | 90% max |
| Shock Resistance | Destruction: 1,000 m/s2 (free position) min. Malfunction: 300 m/s2 (operation limit position) min. |
| Degree Of Protection | IP65 |
| Durability | Mechanical: 10,000,000 operations min. Electrical: 300,000 operations min. (5 A at 250 VAC, resistive load) |
| Insulation Resistance | 100 MΩ min. (at 500 VDC) |
| Dielectric Strength | Between terminals of the same polarity: 1,000 VAC, 50/60 Hz for 1 min Between currentcarrying metal parts and ground: 1,500 VAC, 50/60 Hz for 1 min |
| Actuator | Coil spring |
| Vibration Resistance | Malfunction: 10 to 55 Hz, 1.5-mm double amplitude |
| Operating Speed | 5 mm to 0.5 m/s |
| Operating Frequency | Mechanical: 120 operations/min Electrical: 30 operations/min |
| Contact Resistance | 25 mΩ max. (initial value) |
| Rated Insulation Voltage Ui | 250 V |
| Weight | Approx. 130 to 190 g |
The Omron D4V-8166Z is a high-performance limit switch designed for compact automation systems requiring precision and durability. It features a flexible coil spring actuator suitable for irregular or deflecting targets and supports operating speeds from 5 mm/s to 0.5 m/s. With a contact rating of 5 A at 250 VAC, it ensures reliable electrical performance over 300,000 operations, while offering a mechanical durability of 10 million cycles.
Its sealed housing complies with IP65, providing strong resistance to dust and water spray. Engineered for stability, it withstands vibration (10–55 Hz) and shock (up to 1,000 m/s² destruction rating). The unit operates within a wide temperature range from −20°C to 60°C and maintains excellent insulation (100 MΩ at 500 VDC) and low contact resistance (25 mΩ max). The D4V-8166Z is commonly used in machinery, safety mechanisms, and conveyo




