Omron D4GS-N3R Safety Door Switch
Omron D4GS-N3R is a slim safety door switch developed for detecting the position of protective machine guards where installation space is limited. A Type 2 low-level coded interlock provides mechanical guard monitoring, while the direct opening mechanism supports positive contact separation when the guard is operated. The switch carries IP67 enclosure protection and operates at speeds from 0.1 to 0.5 m/s. Its mechanical characteristics include 60 N minimum direct opening force and 10 mm minimum travel, supporting dependable guard detection. The D4GS-N3R belongs to the D4GS series within the machine safety door switch range from Omron industrial safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4GS-N3R |
Omron D4GS-N3R 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-N3R Safety Door Switch uses a Type 2 low-level coded interlock for mechanical monitoring of protective machine guards. Its IP67 enclosure supports industrial operating environments, while an operating speed range of 0.1 to 0.5 m/s defines the permitted actuator movement. The direct opening mechanism provides 60 N minimum force with 10 mm minimum travel, supporting positive mechanical contact separation when the associated guard is opened. An integrated cable provides connection to the machine safety circuit.
Electrical specifications include a 250 V rated insulation voltage, 100 MΩ minimum insulation resistance and a 2 × 2 mm minimum contact gap. Contact resistance is 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. Shock resistance reaches 1,000 m/s² minimum for destruction and 300 m/s² minimum for malfunction. The switch operates from −30 to 70°C with no icing and supports humidity up to 95%. For the closely related N3R variant listed in the same family, the D4GS-N3R-5 provides the strongest model relationship.
