Leuze IS 208MM/4NC-4N0 Proximity Sensor
The Leuze IS 208MM/4NC-4N0 Proximity Sensor (Part No: 50129349 ) offers a 8 mm diameter, M8 thread size, PNP NC (normally closed) output, PVC Cable, 2m Length 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/4NC-4N0 |
Leuze IS 208MM/4NC-4N0 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 | NC (normally closed) |
| Switching frequency, max. | 5,000 Hz |
| Connection type | PVC Cable, 2m Length |
| Degree of protection | IP 67 |
| Housing | Stainless steel |
| Active surface | Plastic |
The Leuze IS 208MM/4NC-4N0 Proximity Sensor stands out for its combination of performance, durability, and reliability in challenging industrial environments. Designed with a robust M8 threaded stainless steel housing, this sensor offers exceptional mechanical protection and corrosion resistance—critical for applications involving vibration, oil, or coolant exposure. The sensor operates on a 10–30 V DC supply and delivers a normally closed (NC) PNP switching output, making it suitable for safety-critical circuits and fail-safe installations.
With a sensing range of 1.5 mm to 40 mm and a maximum switching frequency of 5,000 Hz, the IS 208MM/4NC-4N0 can reliably detect even the smallest changes in object position at high speeds. Its non-embedded mounting style offers extended sensing distances, allowing it to detect metal objects without interference from surrounding metal parts. The IP67 protection rating ensures full dust ingress protection and resilience against water immersion, making this Leuze Proximity Sensor highly suitable for dusty or washdown environments. It features a fixed cable connection for secure and vibration-resistant electrical interfacing.
Trusted by machine builders and OEMs, this sensor is built for performance in tight spaces without compromising detection reliability. Leuze’s proven quality and German engineering ensure consistency, accuracy, and longevity across all use cases. Whether you're building high-speed packaging lines or automated assembly cells, the Leuze IS 208MM/4NC-4N0 delivers the precision your application demands.
Although the above model is a proximity sensor, Leuze also offers advanced photoelectric sensors like the Leuze WL4S-3F2130 for optical detection tasks. This model is widely used in conveyor automation, part presence detection, and alignment verification. With its compact design and high background suppression capability, it performs reliably even in narrow installation zones or reflective environments.
In a typical application, the WL4S-3F2130 Photoelectric Sensor is mounted along a conveyor belt to detect the presence or absence of components before packaging or labeling. Its ability to detect dark or glossy objects—regardless of surface finish—makes it especially effective in the automotive, food processing, and logistics sectors. Additionally, the PNP output can be directly interfaced with PLCs or control relays for real-time signal processing.
This model is popular among Indian maintenance engineers due to its ease of installation, alignment, and dependable detection across varying ambient conditions. Engineers trust the Leuze brand not only for performance, but also for the support and documentation that accompany every sensor. Whether you're upgrading existing lines or building a new machine from scratch, the Leuze WL4S-3F2130 gives you the sensing accuracy and installation flexibility needed to succeed.

