Omron D4GS-NK2 Safety Door Switch
Omron D4GS-NK2 is a vertical-mount safety door switch designed for protective machine guards where switch mounting orientation is an important installation requirement. Its vertical mounting arrangement supports defined actuator positioning, while a Type 2 low-level coded interlock provides mechanical guard-position detection. The direct opening mechanism delivers 60 N minimum force with 10 mm minimum travel, and operating speed ranges from 0.1 to 0.5 m/s. IP67 protection supports industrial machine safety installations exposed to dust or moisture. The D4GS-NK2 belongs to the D4GS Series within the slim safety door switch range from Omron industrial safety products, supporting protective-door detection, machine guarding and safety interlock applications.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4GS-NK2 |
Omron D4GS-NK2 Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | Vertical 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-NK2 Safety Door Switch uses a vertical mounting arrangement for mechanical monitoring of protective doors and movable machine guards. Vertical mounting is the primary installation attribute of this model because it defines how the switch is positioned in relation to the actuator and guarded access point. A Type 2 low-level coded interlock supports mechanical guard-position detection, while the direct opening mechanism provides positive contact separation when the protective door is operated. The switch delivers 60 N minimum direct opening force with 10 mm minimum travel and supports operating speeds from 0.1 to 0.5 m/s. IP67 protection supports industrial machine safety installations exposed to dust or moisture. Its main semantic relationships are vertical mounting, slim safety door switching, protective guard detection, direct opening operation and machine safety monitoring. These functional characteristics distinguish the model more effectively than secondary resistance or weight values. The D4GS-NK2 therefore connects guard movement with the associated safety control architecture through a compact mechanical interlock. Mounting orientation becomes an important selection criterion when comparing D4GS installation accessories and variants. For applications requiring greater positioning flexibility instead of a fixed vertical mounting arrangement, the D4GS-NK4 provides a closely related adjustable-mount option within the same D4GS product family.
