Omron D4NS-2DF Safety Door Switch
The Omron D4NS-2DF Safety Door Switch provides 1-Conduit type, and a Type 2 interlock featuring Low level coded coding for enhanced operator protection. Built to withstand harsh industrial environments, it offers a robust IP67 protection rating, supports 0.05 to 0.5 m/s operating speed, and ensures dependable performance with a 10 mm min. direct opening travel. With 25 mΩ max. contact resistance, 300 V rated insulation voltage, 100 MΩ min. insulation resistance, and a 2 × 2 mm min contact gap, it delivers safe and consistent operation. Manufactured by Omron and listed under Omron Safety Door Switch solutions, this model belongs to the D4NS Series.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NS-2DF |
Omron D4NS-2DF Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 1-Conduit type |
| Contact configuration | Slow-action,3NC |
| Conduit outlet/Connector | M20 |
| Interlock type | Type 2 |
| Coding level | Low level coded |
| Degree of protection | IP67 |
| Operating speed | 0.05 to 0.5 m/s |
| Direct opening force | <Standard type> 60 N min.; <High pull-force type> 80 N min. |
| Direct opening travel | 10 mm min. |
| Contact resistance | 25 mΩ max. |
| Rated insulation voltage (Ui) | 300 V |
| Rated frequency | 50/60 Hz |
| Insulation resistance | 100 MΩ min. |
| Contact gap | 2 × 2 mm min |
| Vibration resistance | Malfunction: 10 to 55 Hz, 0.75 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 |
| Weight | Approx. 96 g |
The Omron D4NS-2DF Safety Door Switch delivers exceptional performance in safety-critical systems with its 3NC slow-action contact configuration, ensuring triple-circuit redundancy for fail-safe operation. It integrates a Type 2 interlock mechanism and low-level coded key to reduce unauthorized bypass and meet industrial safety standards. The switch’s M20 conduit connector allows seamless electrical integration into enclosures and panels, while its 10 mm direct opening travel guarantees consistent mechanical separation under emergency conditions.
Built for harsh industrial environments, the D4NS-2DF maintains performance under vibrations of 10–55 Hz and shock loads up to 1,000 m/s². Its IP67 rating provides full protection against dust and water, ensuring suitability for washdown zones and heavy-duty applications. Electrical safety is reinforced with a 300 V insulation voltage, 25 mΩ contact resistance, and 100 MΩ insulation resistance. This switch also operates reliably across a wide temperature range of −30°C to 70°C and up to 95% ambient humidity. Compact and lightweight at just 96 g, the Omron D4NS-2DF is trusted by engineers for critical applications in conveyors, packaging systems, robotic cells, and access-controlled equipment.
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