Omron D4NS-1FF Safety Door Switch
The Omron D4NS-1FF 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-1FF |
Omron D4NS-1FF Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 1-Conduit type |
| Contact configuration | Slow-action MBB contact,2NC/1NO |
| 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-1FF Safety Door Switch features a slow-action, MBB contact configuration consisting of 2NC and 1NO contacts, providing overlapping safety circuits for enhanced fail-safe operations. With a Type 2 interlock and low-level coding, this unit is designed to reduce tampering risk while maintaining consistent performance under daily wear. Its 10 mm direct opening travel ensures safe mechanical disconnection when access doors are opened, and the direct opening force of 60 N (standard) to 80 N (high pull-force) allows compatibility with various mechanical loads.
Built to perform in tough conditions, the D4NS-1FF withstands vibrations from 10 to 55 Hz and shock up to 1,000 m/s². With an IP67 protection rating, it offers full resistance against water and dust ingress, making it suitable for heavy-duty applications in packaging, material handling, and robotics. The switch supports a rated insulation voltage of 300 V, contact resistance of 25 mΩ, and insulation resistance of 100 MΩ, delivering long-term electrical integrity. Reliable even in extreme conditions from −30°C to 70°C and high humidity (up to 95%), the Omron D4NS-1FF provides trusted performance in safety-critical systems.
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