Leuze IS 208MM/4NO-4N0-S8.3 Proximity Sensor
The Leuze IS 208MM/4NO-4N0-S8.3 Proximity Sensor (Part No: 50109659 ) offers a 8 mm diameter, M8 thread size, PNP NO (normally open) output, M8 Connector, 3 -pin connection. Manufactured by Leuze under the Leuze Proximity Sensor category, this model belongs to the 203 & 204 Series.
| Brand | Leuze |
| Product Type | Proximity Sensor |
| Product | IS 208MM/4NO-4N0-S8.3 |
Leuze IS 208MM/4NO-4N0-S8.3 Proximity Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Diameter | 8 mm |
| Thread size | M8 |
| Type of installation | Non-embedded |
| Supply voltage UB | 10 ... 30 V, DC |
| Typ. operating range limit Sn | 4mm |
| Switching outputs | PNP |
| Switching principle | NO (normally open) |
| Switching frequency, max. | 3,500 Hz |
| Connection type | M8 Connector, 3 -pin |
| Degree of protection | IP 67 |
| Housing | Stainless steel |
| Active surface | Plastic |
The Leuze IS 208MM/4NO-4N0-S8.3 Proximity Sensor is engineered to offer dependable sensing performance with a 4 mm operating range and a PNP switching output in a normally open (NO) configuration. It runs on a standard 10–30 V DC supply voltage, making it easy to integrate into industrial control circuits. The sensor features a non-embedded mounting style with a standard M8 thread, ensuring quick installation on panels, brackets, or metal structures without affecting sensing accuracy.
Built for harsh environments, this model is housed in stainless steel with a tough plastic sensing face, offering long service life even in dusty, oily, or wet conditions. Its IP67-rated protection ensures resistance to water and particulate ingress, making it highly reliable in food, automotive, and general manufacturing industries. The M8 male 3-pin connector provides a robust, vibration-resistant electrical connection, simplifying wiring in distributed I/O systems and control panels.
With a high switching frequency of 3,500 Hz, the IS 208MM/4NO-4N0-S8.3 excels at detecting rapidly moving components, supporting high-throughput production lines with minimal delay or false triggering. This Leuze proximity sensor offers the perfect balance of performance, durability, and compatibility, making it a trusted choice for engineers looking to upgrade or expand automation reliability without compromising precision or build quality.
The Leuze IS 208MM/4NO-4N0-S8.3 Proximity Sensor is widely applied in fast-paced automation systems where precise metal detection is essential — such as in indexing tables, robotic pick-and-place units, or packaging machinery. Its compact M8 threaded housing allows it to be mounted in tight mechanical assemblies while still offering strong signal stability.
Maintenance engineers appreciate its IP67 protection and stainless steel construction, which enable dependable operation in environments exposed to vibration, coolants, and debris. The fast 3,500 Hz switching capability ensures real-time detection without lag, which is critical in high-speed operations like bottling lines or electronics inspection systems.
The Leuze IS 208MM/4NO-4N0-S8.3 is not just another sensor — it’s a precision detection solution built for harsh industrial use cases. Whether you're retrofitting legacy equipment or specifying components for new builds, this proximity sensor is engineered to deliver stability, responsiveness, and seamless integration into modern PLC architectures.

