Omron D5B-5021 Limit Switch
Omron D5B-5021 is an M5 mechanical touch switch with a cone-shaped actuator for point-contact detection in compact machinery. The defined actuator tip suits applications where the target must contact a small sensing area, while the slow-action mechanism supports resistive microloads from 1 mA at 5 VDC to 30 mA at 30 VDC. Its 1 m oil-resistant cable keeps wiring compact near the installation point, and IP67 protection supports use around dust, water, or oil. The D5B-5021 belongs to the D5B Series within the precision mechanical touch switch range from Omron sensing products for accurate contact, presence, and position detection in space-limited machine assemblies.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | D5B-5021 |
Omron D5B-5021 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Type | M5 |
| Shape Structure | Touch switches |
| Electrical Ratings | 1 mA at 5 VDC to 30 mA at 30 VDC |
| Load | Resistive load |
| Actuator Detail | Plunger |
| Repeat Accuracy | Plunger |
| Material Housing | Metal |
| Ambient Temperature | Operating: –10°C to 70°C (with no icing) |
| Ambient Humidity | Operating: 95% max. |
| Shock Resistance | Mechanical: 1,000 m/s2 min. Malfunction: 300 m/s2 min. |
| Degree Of Protection | IP67 |
| Cable Specifications | Oil-resistant cable |
| Insulation Resistance | 100 MΩ min. at 250 VDC between each terminal and ground |
| Cable Length | 1 m |
| Dielectric Strength | 250 VAC, 50/60 Hz for 1 min between terminals of same polarity (TTP) 1,000 VAC, 50/60 Hz for 1 min between current-carrying metal parts and ground (600 VAC for M5 model) |
| Actuator | Cone-shaped |
| Vibration Resistance | Malfunction: 10 to 55 Hz, 1.5-mm double amplitude |
| Operating Mechanism | Slow action |
| Operating Speed | 5 to 500 mm/s |
| Operating Frequency | Mechanical: 120 operations/min. Electrical: 60 operations/min |
| Contact Resistance | 700 mΩ max. |
The Omron D5B-5021 Limit Switch is an M5 mechanical touch switch with a cone-shaped actuator for point-contact detection in compact machinery. The defined actuator tip provides a small contact area for precise mechanical sensing, while the slow-action mechanism supports resistive microloads from 1 mA at 5 VDC to 30 mA at 30 VDC. Operating speed ranges from 5 to 500 mm/s. A 1 m oil-resistant cable keeps wiring close to the sensing point, and the metal body with IP67 protection supports installations exposed to dust, water, or oil.
Insulation resistance is 100 MΩ minimum at 250 VDC between each terminal and ground, while contact resistance is 700 mΩ maximum. The D5B-5021 operates from -10 to 70°C with relative humidity up to 95%. Mechanical shock resistance is specified at 1,000 m/s² minimum, with malfunction shock resistance of 300 m/s² minimum. Malfunction vibration resistance covers 10 to 55 Hz at 1.5 mm double amplitude. The switch supports up to 120 mechanical and 60 electrical operations per minute. These specifications suit low-current contact detection where the cone-shaped tip and compact M5 mounting are important for repeated machine cycles. For the same M5 cone-shaped actuator with a longer 3 m cable, see the D5B-5023 model.
