Omron D4NS-SK01 Safety Door Switch
The Omron D4NS-SK01 Safety Door Switch provides , 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-SK01 |
Omron D4NS-SK01 Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| 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-SK01 Safety Door Switch offers superior reliability with a Type 2 interlock mechanism and low-level coding for standard safety applications. Its rugged construction supports a wide operating temperature range from −30°C to 70°C and maintains performance even in humid conditions up to 95% humidity. With a durable IP67-rated housing, it ensures protection against dust and temporary water immersion.
Engineered to withstand mechanical stress, the switch operates at speeds between 0.05 to 0.5 m/s and tolerates vibration from 10 to 55 Hz as well as shock levels up to 1,000 m/s². The direct opening force of up to 80 N and a minimum contact gap of 2 × 2 mm further enhance its safety integrity. Rated for 300 V insulation voltage with 25 mΩ max contact resistance, this model is trusted across a variety of industrial sectors where secure access control is critical.
Weighing just 96 g, the D4NS-SK01 combines compactness with resilience. Its 10 mm direct opening travel and high insulation resistance of 100 MΩ assure consistent safety compliance.




