OMRON Safety Interlock Switch: D4NS Series
The OMRON D4NS Series Safety Interlock Switch (MPN D4NS-4AF-NPT) is a hazardous-location safety-interlock switch with a 1NO/1NC contact configuration. It features a front key hole location and a flat actuating key…
SKU 3G-OTH-30339
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Product Description
The OMRON D4NS Series Safety Interlock Switch (MPN D4NS-4AF-NPT) is a hazardous-location safety-interlock switch with a 1NO/1NC contact configuration. It features a front key hole location and a flat actuating key type, with an M20 terminal connection type.
Frequently Asked Questions
What is the OMRON D4NS-4AF-NPT safety interlock switch used for?
The OMRON D4NS-4AF-NPT is a hazardous-location safety-interlock switch used to monitor the position of guards and doors on industrial machinery. It prevents machine operation when the guard is open, protecting personnel in environments with explosive dust or gases. Common applications include chemical plants, grain handling, and pharmaceutical processing.
What are the specifications of the OMRON D4NS-4AF-NPT?
The OMRON D4NS-4AF-NPT is a D4NS Series safety-interlock switch with a 1NO/1NC contact configuration. It has a front key hole location, a flat actuating key type, and an M20 terminal connection type. The switch is designed for hazardous locations and uses a positive-opening mechanism for reliable safety circuit interruption.
Where to buy the OMRON D4NS-4AF-NPT worldwide?
3G Electric supplies the OMRON D4NS-4AF-NPT safety interlock switch worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact our team for a quote and lead time. We source genuine OMRON components for hazardous-location safety applications.
How to install the OMRON D4NS-4AF-NPT safety interlock switch?
Mount the D4NS-4AF-NPT switch on the fixed guard frame and align the flat actuating key with the front key hole. Connect the M20 terminal to the safety circuit using appropriate hazardous-location wiring methods. Ensure the positive-opening NC contact is wired in series with the machine stop circuit. Test guard position detection before operation.
Used in
Common applications for OMRONOMRON Products
3G Electric supplies OMRON hazardous-location safety-interlock switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.










