Omron D4NS-1DF Safety Door Switch
The Omron D4NS-1DF 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-1DF |
Omron D4NS-1DF Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 1-Conduit type |
| Contact configuration | Slow-action,3NC |
| 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-1DF Safety Door Switch features a slow-action 3NC contact configuration, providing triple-pole redundancy for enhanced safety applications. Integrated with a Type 2 interlock mechanism and low-level coded actuator, this model reduces the risk of accidental or unauthorized machine access. Its direct opening force ranges from 60 N to 80 N, and the 10 mm direct opening travel ensures mechanical reliability in critical operations. The contact resistance is limited to 25 mΩ max for electrical efficiency, while rated insulation voltage of 300 V and insulation resistance of 100 MΩ support stable circuit isolation.
With a rugged IP67-rated enclosure, the D4NS-1DF is built to withstand industrial dust, water exposure, and extreme conditions. It performs reliably under vibrations from 10 to 55 Hz and shock forces up to 1,000 m/s². Engineered for long-term performance, it supports ambient temperatures from −30°C to 70°C and humidity up to 95%, making it a dependable choice for heavy machinery, conveyor systems, and robotics in factory settings. Weighing approximately 96 g, the Omron D4NS-1DF balances safety, durability, and electrical precision in one compact form.
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