Omron D4GS-N4R-3 Safety Door Switch
Omron D4GS-N4R-3 is a slim safety door switch designed to monitor protective machine guards through a Type 2 low-level coded interlock. Its compact construction supports applications where mounting space is limited, while IP67 enclosure protection supports industrial operating conditions. The switch operates at speeds from 0.1 to 0.5 m/s and provides a direct opening force of 60 N minimum with 10 mm minimum travel. Its electrical characteristics include a 250 V rated insulation voltage, 100 MΩ minimum insulation resistance and a 2 × 2 mm minimum contact gap. The D4GS-N4R-3 belongs to the D4GS series within the protective door switch range from Omron industrial safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4GS-N4R-3 |
Omron D4GS-N4R-3 Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Interlock type | Type 2 |
| Coding level | Low level coded |
| Degree of protection | IP67 |
| Operating speed | 0.1 to 0.5 m/s |
| Direct opening force | 60 N min |
| Direct opening travel | 10 mm min |
| Contact resistance | 300 mΩ max. (with 1 m cable) ; 500 mΩ max. (with 3 m cable); 700 mΩ max. (with 5 m cable) |
| Rated insulation voltage (Ui) | 250 V |
| Rated frequency | 50/60 Hz |
| Insulation resistance | 100 MΩ min. |
| Contact gap | 2 × 2 mm min |
| Vibration resistance | Malfunction 10 to 55 Hz, 0.35 mm single amplitude |
| Shock resistance | Destruction: 1,000 m/s2 min. Malfunction: 300 m/s2 min |
| Ambient operating temperature | −30 to 70°C (with no icing) |
| Ambient operating humidity | 95% max |
| Cable | UL2464 No. 22 AWG, finishing O.D.: 7.2 mm |
| Weight | Approx. 120 g |
The Omron D4GS-N4R-3 Safety Door Switch combines a slim construction with a Type 2 low-level coded interlock for protective machine-guard monitoring. Its IP67 enclosure supports industrial installations exposed to dust and moisture, while the switch operates at speeds from 0.1 to 0.5 m/s. The direct opening mechanism provides 60 N minimum force with 10 mm minimum travel, supporting positive mechanical contact separation when the associated protective door changes position. An integrated cable provides electrical connection to the machine safety circuit.
Electrical characteristics include 250 V rated insulation voltage, 100 MΩ minimum insulation resistance and a 2 × 2 mm minimum contact gap. Contact resistance is specified at 300 mΩ maximum with a 1 m cable, 500 mΩ maximum with a 3 m cable and 700 mΩ maximum with a 5 m cable. Rated frequency is 50/60 Hz. Malfunction vibration resistance covers 10 to 55 Hz at 0.35 mm single amplitude, while shock resistance reaches 1,000 m/s² minimum for destruction and 300 m/s² minimum for malfunction. Operating temperature ranges from −30 to 70°C with no icing, humidity reaches 95% maximum. For another N4R configuration within the same product family, the D4GS-N4R-5 provides a closely related model.
