In sourcing discussions, D4NS-4BF-NPT is often placed next to Omron SMPS 24V 10A, Omron Sensors and Omron D4Ds K3 so procurement teams can align budgets and technical requirements effectively.
Omron D4NS-4BF-NPT Safety Door Switch
The Omron D4NS-4BF-NPT Safety Door Switch provides reliable machine-guard monitoring with a 1-Conduit type, 1/2-14NPT structure, Slow-action,2NC contacts, 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 mΞ© max. contact resistance, 300 V rated insulation voltage, 100 MΞ© min. insulation resistance, and a 2 Γ 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-4BF-NPT |
Omron D4NS-4BF-NPT Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 1-Conduit type |
| Contact configuration | Slow-action,2NC |
| Conduit outlet/Connector | 1/2-14NPT |
| 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 mΞ© max. |
| Rated insulation voltage (Ui) | 300 V |
| Rated frequency | 50/60 Hz |
| Insulation resistance | 100 MΞ© min. |
| Contact gap | 2 Γ 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 | β30 to 70Β°C (with no icing) |
| Ambient operating humidity | 95% max |
| Weight | Approx. 96 g |
The Omron D4NS-4BF-NPT Safety Door Switch features a slow-action 2NC contact configuration that ensures redundant signal interruption in emergency conditions. Designed with a Type 2 interlock mechanism and low-level coding, it provides reliable tamper resistance for high-safety environments. Its 1/2-14NPT conduit outlet enables smooth integration with North American industrial wiring standards, while the 10 mm direct opening travel ensures safe mechanical contact separation.
Built to operate in harsh environments, the D4NS-4BF-NPT withstands vibrations between 10 and 55 Hz and shock forces up to 1,000 m/sΒ². The IP67 protection rating guarantees resistance to dust and water, making it suitable for both dry and washdown zones. With a 300 V rated insulation voltage and 100 MΞ© minimum insulation resistance, the unit ensures long-term electrical stability. Capable of operating in temperatures from β30Β°C to 70Β°C and humidity levels up to 95%, this Omron safety door switch is a trusted component in conveyors, robotic enclosures, and high-speed manufacturing lines. Weighing only 96 g, the D4NS-4BF-NPT combines durability, safety, and compact efficiency in a single industrial-grade solution.




