Omron D4GS-NK1 Safety Door Switch
Omron D4GS-NK1 is a horizontal-mount safety door switch designed for compact protective-door and machine guard monitoring. Its horizontal mounting arrangement provides a defined installation orientation for machine designs where actuator approach and available mounting space are important. A Type 2 low-level coded interlock provides mechanical guard-position detection, while the direct opening mechanism delivers 60 N minimum force with 10 mm minimum travel. IP67 enclosure protection supports industrial installations, and operating speed ranges from 0.1 to 0.5 m/s. The D4GS-NK1 belongs to the D4GS series within the slim safety door switch range from Omron industrial safety products, supporting machine guard positioning and protective access monitoring.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4GS-NK1 |
Omron D4GS-NK1 Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | Horizontal mounting |
| 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-NK1 Safety Door Switch uses a horizontal mounting arrangement for protective-door and machine guard monitoring in compact installations. A Type 2 low-level coded interlock provides mechanical guard-position detection, while the direct opening mechanism provides 60 N minimum force with 10 mm minimum travel. The switch supports operating speeds from 0.1 to 0.5 m/s and carries IP67 enclosure protection for industrial machine safety applications.
Horizontal mounting is the key model-specific attribute because it defines how the switch is positioned in relation to the protective guard and actuator arrangement. This creates useful relationships between the D4GS-NK1, slim safety door switches, guard orientation, machine access monitoring and protective-door interlocking. Its compact D4GS design supports machine layouts where available mounting space is restricted, while positive opening operation supports mechanical contact separation during guard movement. For engineers comparing models, mounting direction, actuator arrangement, Type 2 interlock and direct opening characteristics are more useful than filling the page with secondary environmental specifications. The switch therefore fits into a machine safety architecture as a mechanical guard-position device connected to the associated safety control circuit. Where a different mounting arrangement is required within the same D4GS product family, the D4GS-NK2 provides a related model for comparison based on the supplied product slug inventory.
